Relevant bibliographies by topics / Oximeter

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Oximeter'

Author: Grafiati
Published: 4 June 2021
Last updated: 27 April 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Oximeter.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Oximeter"

1

da Costa, João Cordeiro, Paula Faustino, Ricardo Lima, Inês Ladeira, and Miguel Guimarães. "Research: Comparison of the Accuracy of a Pocket versus Standard Pulse Oximeter." Biomedical Instrumentation & Technology 50, no. 3 (May 1, 2016): 190–93. http://dx.doi.org/10.2345/0899-8205-50.3.190.

Full text
Abstract:
Abstract Background: Pulse oximetry has become an essential tool in clinical practice. With patient self-management becoming more prevalent, pulse oximetry self-monitoring has the potential to become common practice in the near future. This study sought to compare the accuracy of two pulse oximeters, a high-quality standard pulse oximeter and an inexpensive pocket pulse oximeter, and to compare both devices with arterial blood co-oximetry oxygen saturation. Methods: A total of 95 patients (35.8% women; mean [±SD] age 63.1 ± 13.9 years; mean arterial pressure was 92 ± 12.0 mmHg; mean axillar temperature 36.3 ± 0.4°C) presenting to our hospital for blood gas analysis was evaluated. The Bland-Altman technique was performed to calculate bias and precision, as well as agreement limits. Student's t test was performed. Results: Standard oximeter presented 1.84% bias and a precision error of 1.80%. Pocket oximeter presented a bias of 1.85% and a precision error of 2.21%. Agreement limits were −1.69% to 5.37% (standard oximeter) and −2.48% to 6.18% (pocket oximeter). Conclusion: Both oximeters presented bias, which was expected given previous research. The pocket oximeter was less precise but had agreement limits that were comparable with current evidence. Pocket oximeters can be powerful allies in clinical monitoring of patients based on a self-monitoring/efficacy strategy.
APA, Harvard, Vancouver, ISO, and other styles
2

Pak, Ju Geon, and Kee Hyun Park. "Advanced Pulse Oximetry System for Remote Monitoring and Management." Journal of Biomedicine and Biotechnology 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/930582.

Full text
Abstract:
Pulse oximetry data such as saturation of peripheral oxygen (SpO2) and pulse rate are vital signals for early diagnosis of heart disease. Therefore, various pulse oximeters have been developed continuously. However, some of the existing pulse oximeters are not equipped with communication capabilities, and consequently, the continuous monitoring of patient health is restricted. Moreover, even though certain oximeters have been built as network models, they focus on exchanging only pulse oximetry data, and they do not provide sufficient device management functions. In this paper, we propose an advanced pulse oximetry system for remote monitoring and management. The system consists of a networked pulse oximeter and a personal monitoring server. The proposed pulse oximeter measures a patient’s pulse oximetry data and transmits the data to the personal monitoring server. The personal monitoring server then analyzes the received data and displays the results to the patient. Furthermore, for device management purposes, operational errors that occur in the pulse oximeter are reported to the personal monitoring server, and the system configurations of the pulse oximeter, such as thresholds and measurement targets, are modified by the server. We verify that the proposed pulse oximetry system operates efficiently and that it is appropriate for monitoring and managing a pulse oximeter in real time.
APA, Harvard, Vancouver, ISO, and other styles
3

Barker, Steven J., and Nitin K. Shah. "Effects of Motion on the Performance of Pulse Oximeters in Volunteers." Anesthesiology 85, no. 4 (October 1, 1996): 774–81. http://dx.doi.org/10.1097/00000542-199610000-00012.

Full text
Abstract:
Background Pulse oximetry is considered a standard of care in both the operating room and the postanesthetic care unit, and it is widely used in all critical care settings. Pulse oximeters may fail to provide valid pulse oximetry data in various situations that produce low signal-to-noise ratio. Motion artifact is a common cause of oximeter failure and loss of accuracy. This study compares the accuracy and data dropout rates of three current pulse oximeters during standardized motion in healthy volunteers. Methods Ten healthy volunteers were monitored by three different pulse oximeters: Nellcor N-200, Nellcor N-3000, and Masimo SET (prototype). Sensors were placed on digits 2, 3, and 4 of the test hand, which was strapped to a mechanical motion table. The opposite hand was used as a stationary control and was monitored with the same pulse oximeters and an arterial cannula. Arterial oxygen saturation rate varied from 100% to 75% by changing the inspired oxygen concentration. While pulse oximetry was both constant and changing, the oximeter sensors were connected before and during motion. Oximeter errors and dropout rates were digitally recorded continuously during each experiment. Results If the oximeter was functioning before motion began, the following are the percentages of time when the instrument displayed a pulse oximetry value within 7% of control: N-200 = 76%, N-3000 = 87%, and Masimo = 99%. When the oximeter sensor was connected after the beginning of motion, the values were N-200 = 68%, N-3000 = 47%, and Masimo = 97%. If the alarm threshold was chosen as pulse oximetry less than 90%, then the positive predictive values (true alarms/ total alarms) are N-200 = 73%, N-3000 = 81%, and Masimo = 100%. In general, N-200 had the greatest pulse oximetry errors and N-3000 had the highest dropout rates. Conclusions The mechanical motions used in this study significantly affected oximeter function, particularly when the sensors were connected during motion, which requires signal acquisition during motion. The error and dropout rate performance of the Masimo was superior to that of the other two instruments during all test conditions. Masimo uses a new paradigm for oximeter signal processing, which appears to represent a significant advance in low signal-to-noise performance.
APA, Harvard, Vancouver, ISO, and other styles
4

Smyth, R. J., A. D. D'Urzo, A. S. Slutsky, B. M. Galko, and A. S. Rebuck. "Ear oximetry during combined hypoxia and exercise." Journal of Applied Physiology 60, no. 2 (February 1, 1986): 716–19. http://dx.doi.org/10.1152/jappl.1986.60.2.716.

Full text
Abstract:
Ear oximetry is widely used to detect arterial O2 desaturation during exercise in patients with cardiopulmonary disease. Although oximeters have been evaluated for accuracy, response time, and the influence of skin pigmentation, tests of their reliability have not been reported during strenuous exercise. Accordingly, we compared arterial O2 saturation (Sao2) measurements obtained by Hewlett-Packard (HP, model 47201A) and Biox II oximeters with those determined directly from arterial blood in six healthy volunteers during progressive exercise while rebreathing hypoxic gas mixtures. The relationship between the HP oximeter value and blood Sao2 was described by the equation: HP = 0.93 (Sao2) + 5.37 and for the Biox II: Biox = 0.55 (Sao2) + 38.97. With these equations, at a blood Sao2 value of 90%, the underestimation by both oximeters was less than 2%. At a blood value of 70%, the HP oximeter overestimated blood Sao2 by 0.7%, whereas the Biox II showed an overestimation of 10.7%. Below blood Sao2 of 83%, the Biox II tended to overestimate blood Sao2 by an amount greater than the error of the instrument, whereas the HP estimations were within the error of the instrument over all levels of blood Sao2 studied. We conclude that the HP oximeter provides valid estimates of Sao2 during exercise but that the Biox II oximeter, although reflecting qualitative changes in oxygenation that occur during exercise, does not provide accurate records of the degree of desaturation.
APA, Harvard, Vancouver, ISO, and other styles
5

Barker, Steven J., and Nitin K. Shah. "The Effects of Motion on the Performance of Pulse Oximeters in Volunteers (Revised publication)." Anesthesiology 86, no. 1 (January 1, 1997): 101–8. http://dx.doi.org/10.1097/00000542-199701000-00014.

Full text
Abstract:
Background Pulse oximetry is considered a standard of care in both the operating room and the postanesthetic care unit, and it is widely used in all critical care settings. Pulse oximeters may fail to provide valid SpO2 data in various situations that produce low signal-to-noise ratio. Motion artifact is a common cause of oximeter failure and loss of accuracy. This study compares the accuracy and data dropout rates of three current pulse oximeters during standardized motion in healthy volunteers. Methods Ten healthy volunteers were monitored by three different pulse oximeters: Nellcor N-200, Nellcor N-3000, and Masimo SET (prototype). Sensors were placed on digits 2, 3, and 4 of the test hand, which was strapped to a mechanical motion table. The opposite hand was used as a stationary control and was monitored with the same pulse oximeters and an arterial cannula. Arterial oxygen saturation was varied from 100% to 75% by changing the inspired oxygen concentration. While SpO2 was both constant and changing, the oximeter sensors were connected before and during motion. Oximeter errors and dropout rates were digitally recorded continuously during each experiment. Results If the oximeter was functioning before motion began, the following are the percentages of time when the instrument displayed an SpO2 value within 7% of control: N-200 = 76%, N-3000 = 87%, and Masimo = 99%. When the oximeter sensor was connected after the beginning of motion, the values were N-200 = 68%, N-3000 = 47%, and Masimo = 97%. If the alarm threshold was chosen SpO2 less than 90%, then the positive predictive values (true alarms/total alarms) are N-200 = 73%, N-3000 = 81%, and Masimo = 100%. In general, N-200 had the greatest SpO2 errors and N-3000 had the highest dropout rates. Conclusions The mechanical motions used in this study significantly affected oximeter function, particularly when the sensors were connected during motion, which requires signal acquisition during motion. The error and dropout rate performance of the Masimo was superior to that of the other two instruments during all test conditions. Masimo uses a new paradigm for oximeter signal processing, which appears to represent a significant advance in low signal-to-noise performance.
APA, Harvard, Vancouver, ISO, and other styles
6

Cheatham, Scott, Morey J. Kolber, and Michael P. Ernst. "Concurrent Validity of Arterial Blood Oxygen Saturation Measurements: A Preliminary Analysis of an iPad Pulse Oximeter and Traditional Pulse Oximeter Using Bluetooth." International Journal of Athletic Therapy and Training 19, no. 3 (May 2014): 37–42. http://dx.doi.org/10.1123/ijatt.2014-0005.

Full text
Abstract:
Context:Pulse oximetry has become mobile with the use of smartphone and Bluetooth wireless technology. This technology offers many benefits but has not been extensively studied. There is a need to further validate its clinimetric properties for health professionals to provide proper guidance to patients.Objective:This investigation assessed the concurrent validity of the iSpO2pulse oximeter against a traditional pulse oximeter in measuring short-term resting blood oxygen saturation (SpO2) and pulse rate.Design:Observational study of reliability.Setting:University kinesiology laboratory.Participants:Thirty healthy, recre-ationally active adults (18 men, 12 women; mean age = 25.7 ± 5.46 years, mean height = 170.3cm ± 9.51, mean body mass = 76.4 kg ± 19.33).Intervention:Resting measurement of SpO2and pulse rate using the iSpO2pulse oximeter with the iPad Mini and a traditional pulse oximeter with Bluetooth.Main Outcome Measure:Resting SpO2and pulse rate were concurrently measured over 5 min.Results:The concurrent validity between the iSpO2and traditional pulse oximeter was moderate for measuring SpO2, intraclass correlation coeffcient (ICC)(3, 1) = .73,SEM= 0.70%, and good for pulse rate, ICC(3, 1) = .97,SEM= 1.74 beats per minute (bpm). The minimal detectable change at the 95% confidence interval for both instruments suggests that there may be 1.94% disagreement for SpO2and 4.82 bpm disagreement between pulse oximetry methods. The 95% limits of agreement (LoA) for measuring SpO2suggests that the iSpO2and traditional pulse oximeters may vary -0.28 ± 1.98%, or approximately 2%. The 95% LoA for measuring pulse rate suggests that the iSpO2and traditional pulse oximeter may vary 1.74 ± 4.98 bpm, potentially upward of 6 bpm. On the basis of the results of the LoA, it appears that there may be a slight systematic bias between the two devices, with the traditional pulse oximeter producing higher pulse rates than the iSpO2.Conclusion:The findings suggest that both instruments may be beneficial for indirect short-term measurements of resting SpO2and pulse rate.
APA, Harvard, Vancouver, ISO, and other styles
7

Yossef Hay, Ohad, Meir Cohen, Itamar Nitzan, Yair Kasirer, Sarit Shahroor-karni, Yitzhak Yitzhaky, Shlomo Engelberg, and Meir Nitzan. "Pulse Oximetry with Two Infrared Wavelengths without Calibration in Extracted Arterial Blood." Sensors 18, no. 10 (October 15, 2018): 3457. http://dx.doi.org/10.3390/s18103457.

Full text
Abstract:
Oxygen saturation in arterial blood (SaO2) provides information about the performance of the respiratory system. Non-invasive measurement of SaO2 by commercial pulse oximeters (SpO2) make use of photoplethysmographic pulses in the red and infrared regions and utilizes the different spectra of light absorption by oxygenated and de-oxygenated hemoglobin. Because light scattering and optical path-lengths differ between the two wavelengths, commercial pulse oximeters require empirical calibration which is based on SaO2 measurement in extracted arterial blood. They are still prone to error, because the path-lengths difference between the two wavelengths varies among different subjects. We have developed modified pulse oximetry, which makes use of two nearby infrared wavelengths that have relatively similar scattering constants and path-lengths and does not require an invasive calibration step. In measurements performed on adults during breath holding, the two-infrared pulse oximeter and a commercial pulse oximeter showed similar changes in SpO2. The two pulse oximeters showed similar accuracy when compared to SaO2 measurement in extracted arterial blood (the gold standard) performed in intensive care units on newborns and children with an arterial line. Errors in SpO2 because of variability in path-lengths difference between the two wavelengths are expected to be smaller in the two-infrared pulse oximeter.
APA, Harvard, Vancouver, ISO, and other styles
8

Lu, Chun-Hao, Jiun-Hung Lin, Han-Ming Huang, Cheng-Yang Huang, and Cheng-Chi Tai. "DESIGN OF A RING-TYPE REFLECTION PULSE OXIMETER WITH A PARABOLIC REFLECTOR." Biomedical Engineering: Applications, Basis and Communications 27, no. 01 (February 2015): 1550007. http://dx.doi.org/10.4015/s1016237215500076.

Full text
Abstract:
A pulse oximeter is a noninvasive instrument used in clinical medicine to monitor arterial oxygen saturation. Fingertip-type pulse oximeters are popular, but their inconvenience for long-term monitoring in daily life means that other types of wearable pulse oximeters, such as a ring-type reflection pulse oximeter, needs to be developed. However, designing a ring-type pulse oximeter for measuring the oxygen saturation is difficult due to the complex tissue architecture of the finger base. This study used human tissue simulations to evaluate the practicability of a ring-type reflection pulse oximeter design. Moreover, given that the collection of diffusely reflected light can be enhanced by using a parabolic reflector, the efficacy of a ring-type reflection pulse oximeter with a parabolic reflector was also evaluated.
APA, Harvard, Vancouver, ISO, and other styles
9

Tverytnykova, Elena, Tatyana Drozdova, Yulia Demidova, and Nataliia Kuzmenko. "METROLOGICAL SUPPORT OF PULSE OXIMETERS." Advanced Information Systems 6, no. 1 (April 6, 2022): 75–80. http://dx.doi.org/10.20998/2522-9052.2022.1.13.

Full text
Abstract:
The experience of the International Medical Device Regulators Forum in the use of products for oxygen therapy based on the study of guidelines, international and European regulations on medical devices is considered. Emphasis is placed on issues related to the metrological support of pulse oximeters. The global situation with the pandemic increases the relevance of selected topics. Continuous monitoring of blood oxygen saturation is one of the most important elements in the diagnosis and treatment of COVID-19. Despite the fact that the use of pulse oximeters does not require special medical knowledge, calibration and special maintenance, it is still necessary to control their reliability and accuracy of measurement. The study of pulse oximeter MD300M in accordance with the requirements of DSTU 8893:2019 "Metrology. Pulse oximeters. Calibration Method” 2020. Analysis of MD300M pulse oximeter calibration results revealed that this pulse oximeter was calibrated by the saturation and pulse measurement channel, as the maximum deviation of the measured saturation value from the pulse oximeter calibration measure does not exceed the pulse oximeter measurement documentation specified in the operating documentation. The discreteness of the MD300M pulse oximeter and the discreteness of the reference device MPPO-2, which are specified in the passports for the respective devices, have the greatest influence on the measurement uncertainty.
APA, Harvard, Vancouver, ISO, and other styles
10

Louie, Aaron, John R. Feiner, Philip E. Bickler, Laura Rhodes, Michael Bernstein, and Jennifer Lucero. "Four Types of Pulse Oximeters Accurately Detect Hypoxia during Low Perfusion and Motion." Anesthesiology 128, no. 3 (March 1, 2018): 520–30. http://dx.doi.org/10.1097/aln.0000000000002002.

Full text
Abstract:
Abstract Background Pulse oximeter performance is degraded by motion artifacts and low perfusion. Manufacturers developed algorithms to improve instrument performance during these challenges. There have been no independent comparisons of these devices. Methods We evaluated the performance of four pulse oximeters (Masimo Radical-7, USA; Nihon Kohden OxyPal Neo, Japan; Nellcor N-600, USA; and Philips Intellivue MP5, USA) in 10 healthy adult volunteers. Three motions were evaluated: tapping, pseudorandom, and volunteer-generated rubbing, adjusted to produce photoplethsmogram disturbance similar to arterial pulsation amplitude. During motion, inspired gases were adjusted to achieve stable target plateaus of arterial oxygen saturation (SaO2) at 75%, 88%, and 100%. Pulse oximeter readings were compared with simultaneous arterial blood samples to calculate bias (oxygen saturation measured by pulse oximetry [SpO2] − SaO2), mean, SD, 95% limits of agreement, and root mean square error. Receiver operating characteristic curves were determined to detect mild (SaO2 < 90%) and severe (SaO2 < 80%) hypoxemia. Results Pulse oximeter readings corresponding to 190 blood samples were analyzed. All oximeters detected hypoxia but motion and low perfusion degraded performance. Three of four oximeters (Masimo, Nellcor, and Philips) had root mean square error greater than 3% for SaO2 70 to 100% during any motion, compared to a root mean square error of 1.8% for the stationary control. A low perfusion index increased error. Conclusions All oximeters detected hypoxemia during motion and low-perfusion conditions, but motion impaired performance at all ranges, with less accuracy at lower SaO2. Lower perfusion degraded performance in all but the Nihon Kohden instrument. We conclude that different types of pulse oximeters can be similarly effective in preserving sensitivity to clinically relevant hypoxia.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Oximeter"

1

Rodmell, Paul Irvin. "A novel oximeter." Thesis, University of Nottingham, 2006. http://eprints.nottingham.ac.uk/31151/.

Full text
Abstract:
The measurement of oxygen saturation SO2 is one of the vital signs relied on by the medical profession. Pulse oximeters are widely used in many branches of medicine; and are the most widely used method of assessing oxygen saturation. However they can only be applied to an extremity (usually a finger or toe), need calibration, and are known to be inaccurate under certain conditions. The object of this research was to develop an oximeter, that does not require a pulsatile signal, (and so can be used anywhere on the body); can be used in either transmission of reflective mode; does not require calibration; and does not suffer from the known problems of pulse oximeters. The instrument must work with reflected light, and so the first step was to develop a Monte Carlo simulation of the Attenuation spectra, for visible light, from a scattering media (tissue). A mathematical model of the attenuation surface had then to be found, and its effect on the absorbtion spectra of oxyhemoglobin HbO2 and de-oxyhemoglobin Hb understood. Then the oxygen saturation the ratio of HbO2 to total haemoglobin could be recovered. Methods of computing oxygen saturation from the raw reflectance spectra were devised and then tested with single reflection spectra, the results indicate that a low cost instrument could be developed. The technique was applied to images from a hyper-spectral camera, this instrument takes a full spectrum at each pixel of an image, and enabled an oxygen saturation map for large areas of the body to be produced. The technique is being used with AstraZenca Ltd as a bio marker skin for irritation studies.
APA, Harvard, Vancouver, ISO, and other styles
2

Clark, Daniel John. "A spectroscopically based blood oximeter." Thesis, Northumbria University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335573.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sankman, Joseph, Brian Bailey, Brian Ebel, Scott Galvin, Jack Grantham, Scott Little, Erica Morey, and Christopher Stemple. "Development of a Remote Pulse Oximeter." Thesis, The University of Arizona, 2010. http://hdl.handle.net/10150/146648.

Full text
Abstract:
Pulse oximetry is widely maintained as the standard method for measuring a person?s blood oxygen saturation. Monitoring such a vital sign allows for detecting the onset and progression of various diseases and conditions that could result in tissue and organ damage or death due to lack of required oxygen delivery. The goal of this project was to design a pulse oximeter geared toward consumer use that could wirelessly transmit data to a portable device, such as a smartphone, for convenient, remote monitoring of oxygen saturation. This report describes the design process for developing a working prototype of the pulse oximeter. Texas Instruments sponsored this project for the Interdisciplinary Engineering Design Program at the University of Arizona. Their goal in funding this project was to develop an intimate knowledge base of the considerations, components, and overall design of a pulse oximeter in order to better assist their customers. The creation of the pulse oximeter reference design was inspired by thorough research on the scientific principles underlying pulse oximetry as well as existing pulse oximeter technologies. From the information collected, the team developed three potential designs for the device. Analysis of each design was conducted to distinguish the one design that would be further developed and fabricated into the working reference design required by the project sponsor. Results obtained by testing the final prototype, discussion of future directions for the reference design, and conclusions drawn from the completion of the project are also presented in this report.
APA, Harvard, Vancouver, ISO, and other styles
4

Morey, Erica Katherine, Brian Bailey, Brian Ebel, Scott Galvin, Jack Grantham, Scott Little, Joseph Sankman, and Christopher Stemple. "Development of a Remote Pulse Oximeter." Thesis, The University of Arizona, 2010. http://hdl.handle.net/10150/156896.

Full text
Abstract:
Pulse oximetry is widely maintained as the standard method for measuring a person's blodd oxygen saturation. Monitoring such a vital sign allows for detecting the onset and progression of various diseases and conditions that could result in tissue and organ damage or death due to lack of required oxygen delivery. The goal of this project was to design a pulse oximeter geared toward consumer use that could wirelessly transmit data to a portable device, such as a smartphone, for convenient, remote monitoring of oxygen saturation. This report describes the design process for developing a working prototype of the pulse oximeter. Texas Instruments sponsored this project for the Interdisciplinary Engineering Design Program at the University of Arizona. Their goal in funding this project was to develop an intimate knowledge base of the considerations, components, and overall design of a pulse oximeter in order to better assist their customers. The creation of the pulse oximeter reference design was inspired by thorough research on the scientific principles underlying pulse oximetry as well as existing pulse oximeter technologies. From the information collected, the team developed three potential designs for the device. Analysis of each design was conducted to distinguish the one design that would be further developed and fabricated into the working reference design required by the project sponsor. Results obtained by testing the final prototype, discussion of future directions for the reference design, and conclusions drawn from the completion of the project are also presented in this report.
APA, Harvard, Vancouver, ISO, and other styles
5

Kayani, Badar Jahangir. "DEVELOPMENT OF CONTINUOUS MONITORING PULSE OXIMETER DEVICE." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1619622233546762.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Pujary, Chirag Jayakar. "Investigation of Photodetector Optimization in Reducing Power Consumption by a Noninvasive Pulse Oximeter Sensor." Digital WPI, 2004. https://digitalcommons.wpi.edu/etd-theses/108.

Full text
Abstract:
Noninvasive pulse oximetry represents an area of potential interest to the army, because it could provide cost-effective, safe, fast and real-time physiological assessment in a combat injured soldier. Consequently, there is a need to develop a reliable, battery-powered, wearable pulse oximeter to acquire and process photoplethysmographic (PPG) signals using an optimized sensor configuration. A key requirement in the optimal design of a wearable wireless pulse oximeter is low power management without compromising signal quality. This research investigated the advantage gained by increasing the area of the photodetector and decreasing the light emitting diode (LED) driving currents to reduce the overall power requirement of a reflectance mode pulse oximeter sensor. In vitro and preliminary in vivo experiments were conducted to evaluate a multiple photodetector reflectance sensor setup to simulate a varying detection area. It was concluded that a reflection pulse oximeter sensor employing a large area photodetector is preferred over a similar transmission type sensor for extending the battery life of a wireless pulse oximeter intended for future telemedicine applications.
APA, Harvard, Vancouver, ISO, and other styles
7

Smith, Reuben Nathanael. "Perioperative comparison of the agreement between a portable fingertip pulse oximeter vs. a conventional bedside pulse oximeter in adult patients (COMFORT trial)." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29680.

Full text
Abstract:
Background: Low-cost, portable fingertip pulse oximeters are widely available to health professionals and the public. They are often not tested to ISO standards, or only undergo accuracy studies in healthy volunteers under ideal laboratory conditions. This study aims to pragmatically evaluate the agreement between one such device and a conventional bedside pulse oximeter in a clinical setting, in patients with varied comorbidities and skin pigmentations. Methods: A single-centre equipment comparison study was conducted. Simultaneous measurements were obtained in 220 patients with both a Contec CMS50D Fingertip Pulse Oximeter and a Nihon Kohden Life Scope MU-631 RK conventional bedside monitor. Peripheral oxygen saturations (SpO₂) and pulse rates were documented, and patient skin tone was recorded using the Fitzpatrick scale. Data was assessed using a Bland-Altman analysis with bias, precision and limits of agreement (LOA) calculated with 95% confidence intervals. A priori acceptability for LOA was determined to be 3%, in keeping with international standards. Results: Mean difference (therefore bias) between the conventional and fingertip oximeters for all data was -0,55% (95% CI -0,73 to -0,36%). Upper and lower limits of agreement (95% CI) were 2,16 (1,84 to 2,47) and -3,25 (-3,56 to -2,94) %. Regression analysis demonstrated worsening agreement with decreasing SpO₂. When samples were separated into “normal” (SpO₂ ≥ 93%) and “hypoxaemic” (SpO₂ < 93%) groups, the normal range displayed acceptable agreement between the two oximeters (bias -0,20 with LOA 2,20 to -2,27%), while the hypoxaemic group fell outside the study’s a priori limits. Heart rate measurements had mean difference (LOA) of -0,43 (-5,61 to 4,76) beats per minute. The study was not powered to detect difference among the skin tones, but demonstrated no trend for this parameter to alter the SpO₂ measurements. Conclusions: During normoxia, portable fingertip pulse oximeters are reliable indicators of SpO₂ and pulse rates in patients with various comorbidities in a pragmatic clinical context. However, they display worsening agreement with conventional pulse oximeters during hypoxaemia. Skin tones do not appear to adversely affect measurements.
APA, Harvard, Vancouver, ISO, and other styles
8

Li, Kejia. "Wireless reflectance pulse oximeter design and photoplethysmographic signal processing." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4143.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Shokouhian, Mohsen. "Power-efficient and high-performance interference resilient pulse oximeter." Thesis, University of Westminster, 2014. https://westminsterresearch.westminster.ac.uk/item/8yv9v/power-efficient-and-high-performance-interference-resilient-pulse-oximeter.

Full text
Abstract:
This thesis presents a novel sigma delta-based pulse oximeter with higher resilience against ambient light interference in comparison to the conventional pulse oximeters available in the market. The pulse oximeter reported in this thesis uses a novel cross-coupled sigma delta modulator to drive the pulse oximeter LEDs with two chaotic, non-overlapping pulse density modulated sequences. The deployment of this modulator not only provides more immunity against ambient light but it also offers more control over the pulse oximeter LEDs power consumption resulting in less power consumption under low ambient light conditions. Additionally, this thesis suggests a novel trans-impedance amplifier (TIA) topology for better detection of the physiological signal under low perfusion state and weak heart pulses. The TIA increases the physiological signal power by partially removing its DC component and providing enough headroom for the amplification of the AC physiological signal. This AC physiological signal is used to calculate the level of blood oxygenation and its accurate detection has a direct impact on the accuracy of the overall pulse oximeter measurement. The thesis also offers a detailed description about the computer model of the pulse oximeter developed in Simulink. This model is the first computer model of pulse oximeter and it is a useful tool for design and development of a pulse oximeter. Comparing the hardware measurement results and the Simulink simulation results presented in Chapter 2 and 5 reflects the capability of the model in predicting the behavior of pulse oximeter under different measurement conditions. The thesis also includes a detailed explanation about our flexible PC-based pulse oximeter hardware prototype which was used as a reference to evaluate the performance of our novel sigma delta-based pulse oximeter. This PC-based conventional pulse oximeter prototype performs the entire signal processing tasks within the Matlab environment and therefore it can be individually used as a platform to design and evaluate the new signal processing algorithms designed for pulse oximeter application. Finally the thesis reports on the standalone FPGA based fixed point implementation of the novel pulse oximeter processing chain on a Xilinx Spartan 3 FPGA Fabric, with real-time measurement results compared and contrasted against the results obtained from the Matlab based processing engine.
APA, Harvard, Vancouver, ISO, and other styles
10

Avakh, Kisomi Alireza. "A novel wireless ring-shaped multi-site pulse oximeter." Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/27891.

Full text
Abstract:
Ces dernières années, la supervision continue des signes vitaux des patients a été un sujet d'intérêt de plusieurs travaux de recherche surtout pour ceux qui souffrent de maladies chroniques ou qui travaillent dans des environnements hasardeux. Dans la pratique médicale moderne, le niveau d'oxygène dans le sang est un des signes vitaux primaires tels que la pression artérielle, la fréquence cardiaque, la température corporelle et le rythme respiratoire. L'oxymétrie de pouls est une technique populaire non-intrusive qui permet de diagnostiquer des problèmes liés aux systèmes respiratoire et circulatoire. Pour cette raison, elle est largement utilisée dans les soins intensifs, les salles d'opération, les soins d'urgence, la naissance et l'accouchement, les soins néonatals et pédiatriques, les études du sommeil et les soins vétérinaires. Or, pour l’oxymètre de pouls, une acquisition précise des signaux est importante pour assurer la fiabilité des mesures de la saturation d'oxygène artériel (SaO2). Dans ce cas, le positionnement des capteurs joue un rôle important car la complexité de la structure du tissu du doigt peut rendre l'effet de l'emplacement de la source lumineuse imprévisible sur la mesure du SpO2. Si tel est le cas, un faible nombre de capteurs autour du doigt pourrait perturber la trajectoire des rayons de lumière et corrompre les mesures. Les oxymètres de pouls conventionnels utilisent une pince à doigts contenant les capteurs qui utilise un seul ensemble de LED et photodétecteur (PD). En plus de l'inconvénient des pinces à doigts, le placement du capteur n'est pas corrigé et sera affecté par des artefacts de mouvement. Dans ce mémoire, nous présenterons un oxymètre qui utilise six ensembles de diodes électroluminescentes et de photo-détecteurs, répartis uniformément en anneau autour du doigt, ce qui permet d'identifier le meilleur chemin de signal, immunisant ainsi l'acquisition du signal à l'effet de position de l'anneau. En outre, pour éliminer les fils de la station de base, ce système utilise un émetteur-récepteur radio ce qui supprime les inconvénients de l'attachement. Dans cette étude de conception de preuve de concept, un prototype de cet oxymètre en anneau est réalisé avec des composants commerciaux à faible consommation de courant et le tout est montés sur une carte électronique flex-rigides qui communique avec un hôte distant par un lien sans-fil pour traiter le signal et calculer le niveau d'oxygène.
Continuous health monitoring for patients with chronic diseases or people working in high-risk environments has been an interesting topic of research in recent years. In modern medical practice, the blood oxygen level is one of the vital signs of the body alongside blood pressure, heart rate, body temperature, and breathing rate. Pulse oximeters provide early information on problems in the respiratory and circulatory systems. They are widely used in intensive care, operating rooms, emergency care, birth and delivery, neonatal and pediatric care, sleep studies, and in veterinary care. Proper signal acquisition in a pulse oximetry system is essential to monitor the arterial oxygen saturation (SaO2). Since the tissue of finger has a complicated structure, and there is a lack of detailed information on the effect of the light source and detector placement on measuring SpO2, sensor placement plays an important role in this respect. Not enough sensors placed around the finger will have an adverse effect on the light path so high signal quality may become impossible to achieve. The conventional Pulse Oximeters use a finger clip, which uses only one set of LEDs and photodetector (PD). In addition to the inconvenience of the finger clips, the placement of the sensor is not fixed and will be affected by motion artifacts. In this thesis, we present a ring-shaped oximeter that uses six sets of light emitting diodes and photodetectors, uniformly distributed around the finger to identify the best signal path, thus making the signal acquisition immune to ring position on the finger. In addition, this system uses a radio transceiver to eliminate the connection wires to a base station which removes the inconvenience of the tethering and reduce the motion artifacts. In this proof of concept study, this novel ring oximeter is implemented with commercial low power consumption off-the-shelf components mounted on a rigid-flex board that connects to a remote host for signal processing and oxygen level calculation.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Oximeter"

1

Catton, R. A. A pulse oximeter for potential use in fetal monitoring. Manchester: UMIST, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Moyle, John T. B. Pulse oximetry. London: BMJ Publishing, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Payne, James P., and J. W. Severinghaus, eds. Pulse Oximetry. London: Springer London, 1986. http://dx.doi.org/10.1007/978-1-4471-1423-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gas monitoring and pulse oximetry. Boston: Butterworth-Heinemann, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

McLaughlin, Carolee. Does arterial oxygen desaturation as measured by pulse oximetry occur during aspiration or penetration in acute dysphagic stroke patients?. [S.l: The Author], 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

International Symposium on Neurochemical Monitoring in the ICU (1st 1994 Tokyo, Japan). Neurochemical monitoring in the intensive care unit: Microdialysis, jugular venous oximetry, and near-infrared spectroscopy : proceedings of the 1st International Symposium on Neurochemical Monitoring in the ICU held concurrently with the 5th Biannual Conference of the Japanese Study Group of Cerebral Venous Oximetry in Tokyo, Japan, May 20-21, 1994. Tokyo: Springer, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Jiri, Kvasnicka, ed. A novel approach to optimization of paced AV delay using atrial contribution index. New York: Nova Science Publishers, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Rutherford, Basham Kimberley A., ed. Essentials of oxygenation: Implication for clinical practice. Boston: Jones and Bartlett Publishers, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Clark, Daniel John. A spectroscopically based blood oximeter. 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lee, Richard. Pulse oximetry and capnography in the ICU. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0073.

Full text
Abstract:
The estimation of arterial oxygen saturation by pulse oximetry and arterial carbon dioxide tension by capnography are vital monitoring techniques in critical care medicine, particularly during intubation, ventilation and transport. Equivalent continuous information is not otherwise available. It is important to understand the principles of measurement and limitations, for safe use and error detection. PETCO2 and oxygen saturation should be regularly checked against PaCO2 and co-oximeter SO2 obtained from the blood gas machine. The PECO2 trace informs endotracheal tube placement, ventilation, and blood flow to the lungs. It is essential their principles of estimation, the information gained and the traps in interpretation are understood.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Oximeter"

1

Lee, B. G., P. T. Morley, and J. E. Cade. "Reliability of the Pulse Oximeter." In Advances in Critical Care Testing, 153–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60735-6_36.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zhang, Pu, Baoyu Hong, and Jing Chen. "Design of Pulse Oximeter Simulator Calibration Equipment." In IFMBE Proceedings, 1533–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-29305-4_403.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lübbers, D. W., U. Merschebrock, and H. P. Keller. "Experiences with a New Wavelength Scanning Oximeter." In Innovations in Physiological Anaesthesia and Monitoring, 97–104. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74114-2_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Alian, Aymen A., and Kirk H. Shelley. "Photoplethysmography: Analysis of the Pulse Oximeter Waveform." In Monitoring Technologies in Acute Care Environments, 165–78. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-8557-5_19.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mertzlufft, F., and R. Zander. "Non-invasive Oximetry Using the Biox III Oximeter: Clinical Evaluation and Physiological Aspects." In Pulse Oximetry, 71–77. London: Springer London, 1986. http://dx.doi.org/10.1007/978-1-4471-1423-9_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Plenderleith, J. L., J. Dougall, and A. J. Asbury. "Use of the Ohmeda Biox III Oximeter in an Intensive Care Unit." In Pulse Oximetry, 55–61. London: Springer London, 1986. http://dx.doi.org/10.1007/978-1-4471-1423-9_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hodgson, A., J. Horbar, G. Sharp, R. Soll, and J. Lucey. "The Accuracy of the Pulse Oximeter in Neonates." In Continuous Transcutaneous Monitoring, 177–79. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1927-6_31.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Haleem, M. A., M. Z. Haque, F. Azhar, and M. A. Muqeet. "Evaluation of Conventional and Non-Conventional Pulse Oximeter." In IFMBE Proceedings, 1100–1103. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89208-3_263.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Adams, Lyliane P., and M. D. Foret. "Monitoring Oxygen Saturation Levels in Patients Undergoing Long-Term Home Oxygen Therapy Using a Portable Oximeter." In Pulse Oximetry, 179–80. London: Springer London, 1986. http://dx.doi.org/10.1007/978-1-4471-1423-9_22.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Do, Thai M., Nam P. Nguyen, and Vo Van Toi. "Development of a Pulse Oximeter for E-Health Applications." In IFMBE Proceedings, 67–75. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-5859-3_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Oximeter"

1

Paterson, Estrella, Penelope Sanderson, Neil Paterson, and Robert Loeb. "Design And Evaluation of a New Auditory Display for the Pulse Oximeter." In ICAD 2019: The 25th International Conference on Auditory Display. Newcastle upon Tyne, United Kingdom: Department of Computer and Information Sciences, Northumbria University, 2019. http://dx.doi.org/10.21785/icad2019.070.

Full text
Abstract:
During surgery the pulse oximeter device provides information about a patient’s oxygen saturation (SpO2) and heart rate via visual and auditory displays. An audible tone is emitted after every detected pulse (indicating heart rate), and the pitch of the tone is mapped to SpO2. However, clinicians cannot reliably judge SpO2 using only the current auditory display. In a series of three studies, we compared auditory displays based on current pulse oximeters with displays designed to provide more information about SpO2 levels using additional acoustic properties. Results from the first two laboratory studies show that the new auditory displays support better identification of specified ranges of SpO2, and better detection of when saturation transitions a critically relevant threshold. The analysis of a third study in a high-fidelity simulator is currently under way. An auditory display that provides more information about SpO2 levels and when SpO2 changes from one range to another may be useful for clinicians when they are engaged in other visually demanding tasks but have to detect and treat patient deterioration, often in time-pressured and stressful situations.
APA, Harvard, Vancouver, ISO, and other styles
2

Misra, Mukesh. "Transcranial cerebral oximeter." In Optical Engineering Midwest '95. SPIE, 1995. http://dx.doi.org/10.1117/12.216792.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Domanski, Andrzej W., Stanislaw Kostrzewa, and Tomasz R. Wolinski. "Fiber-Optic Absorptive Oximeter." In Optical Fibers and Their Applications V, edited by Ryszard S. Romaniuk and Mieczyslaw Szustakowski. SPIE, 1990. http://dx.doi.org/10.1117/12.952986.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Jalan, P., B. R. Bracio, P. J. Rider, and H. Toniolo. "Rapid Prototyping of Pulse Oximeter." In Conference Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2006. http://dx.doi.org/10.1109/iembs.2006.260750.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Jalan, P., B. R. Bracio, P. J. Rider, and H. Toniolo. "Rapid Prototyping of Pulse Oximeter." In Conference Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2006. http://dx.doi.org/10.1109/iembs.2006.4398720.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Chatterjee, Amrita, Snigdha Chowdhury Kolay, Mandakinee Bandyopadhyay, and Subrata Chattopadhyay. "IoT Based Pulse Oximeter System." In 2021 International Conference on Industrial Electronics Research and Applications (ICIERA). IEEE, 2021. http://dx.doi.org/10.1109/iciera53202.2021.9726732.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Benaron, David A., Ilian H. Parachikov, Wai-Fung Cheong, Shai Friedland, Joshua L. Duckworth, David M. Otten, Boris E. Rubinsky, et al. "Quantitative clinical nonpulsatile and localized visible light oximeter: design of the T-Stat tissue oximeter." In Biomedical Optics 2003, edited by Britton Chance, Robert R. Alfano, Bruce J. Tromberg, Mamoru Tamura, and Eva M. Sevick-Muraca. SPIE, 2003. http://dx.doi.org/10.1117/12.488596.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Chugh, Soumil, and Jaskirat Kaur. "Low cost calibration free Pulse oximeter." In 2015 Annual IEEE India Conference (INDICON). IEEE, 2015. http://dx.doi.org/10.1109/indicon.2015.7443576.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Zhang, Xin, and Tianzi Jiang. "Wearable wireless cerebral oximeter (Conference Presentation)." In Neural Imaging and Sensing, edited by E. Duco Jansen and Qingming Luo. SPIE, 2016. http://dx.doi.org/10.1117/12.2211958.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Amirkhanian, Varoujan D., and Wylie I. Lee. "Mode mixing in fiber optic oximeter." In OE/LASE '90, 14-19 Jan., Los Angeles, CA, edited by Abraham Katzir. SPIE, 1990. http://dx.doi.org/10.1117/12.17554.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Oximeter"

1

Denninghoff, Kurt. An Eye Oximeter for Combat Casualty Care. Fort Belvoir, VA: Defense Technical Information Center, December 1999. http://dx.doi.org/10.21236/ada392491.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sylvester, James C. Testing And Evaluation of the Ohmeda, Inc., Model 3800 Pulse Oximeter. Fort Belvoir, VA: Defense Technical Information Center, June 1998. http://dx.doi.org/10.21236/ada357735.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lee, Jaime K. Tracking Pulse Oximeter Findings Before, During and After Titration of Mandibular Advancement Devices (MAD) for Patients With Mild to Moderate Obstructive Sleep Apnea (OSA). Fort Belvoir, VA: Defense Technical Information Center, May 2015. http://dx.doi.org/10.21236/ad1012726.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Mason, Ralph P. VatuximabTM: Optimizing Therapeutic Strategies for Prostate Cancer Based on Dynamic MR Tumor Oximetry. Fort Belvoir, VA: Defense Technical Information Center, December 2007. http://dx.doi.org/10.21236/ada477333.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mannheimer, P., and P. F. Nowak. Optimization of Reflectance Pulse Oximetry Sensors Final Report CRADA No. TC-485-93. Office of Scientific and Technical Information (OSTI), February 2018. http://dx.doi.org/10.2172/1424676.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Mason, Ralph P. Vatuximab(Trademark): Optimizing Therapeutic Strategies for Prostate Cancer Based on Dynamic MR Tumor Oximetry. Fort Belvoir, VA: Defense Technical Information Center, January 2010. http://dx.doi.org/10.21236/ada524416.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wong, Stephen T., and Jared C. Gilliam. Mobile, Multi-modal, Label-Free Imaging Probe Analysis of Choroidal Oximetry and Retinal Hypoxia. Fort Belvoir, VA: Defense Technical Information Center, October 2015. http://dx.doi.org/10.21236/ada624123.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mason, Ralph P. Vatuximab(Trademark): Optimizing Therapeutic Strategies for Prostate Cancer Based on Dynamic MR Tumor Oximetry. Fort Belvoir, VA: Defense Technical Information Center, January 2007. http://dx.doi.org/10.21236/ada470143.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wideman, Jr., Robert F., Nicholas B. Anthony, Avigdor Cahaner, Alan Shlosberg, Michel Bellaiche, and William B. Roush. Integrated Approach to Evaluating Inherited Predictors of Resistance to Pulmonary Hypertension Syndrome (Ascites) in Fast Growing Broiler Chickens. United States Department of Agriculture, December 2000. http://dx.doi.org/10.32747/2000.7575287.bard.

Full text
Abstract:
Background PHS (pulmonary hypertension syndrome, ascites syndrome) is a serious cause of loss in the broiler industry, and is a prime example of an undesirable side effect of successful genetic development that may be deleteriously manifested by factors in the environment of growing broilers. Basically, continuous and pinpointed selection for rapid growth in broilers has led to higher oxygen demand and consequently to more frequent manifestation of an inherent potential cardiopulmonary incapability to sufficiently oxygenate the arterial blood. The multifaceted causes and modifiers of PHS make research into finding solutions to the syndrome a complex and multi threaded challenge. This research used several directions to better understand the development of PHS and to probe possible means of achieving a goal of monitoring and increasing resistance to the syndrome. Research Objectives (1) To evaluate the growth dynamics of individuals within breeding stocks and their correlation with individual susceptibility or resistance to PHS; (2) To compile data on diagnostic indices found in this work to be predictive for PHS, during exposure to experimental protocols known to trigger PHS; (3) To conduct detailed physiological evaluations of cardiopulmonary function in broilers; (4) To compile data on growth dynamics and other diagnostic indices in existing lines selected for susceptibility or resistance to PHS; (5) To integrate growth dynamics and other diagnostic data within appropriate statistical procedures to provide geneticists with predictive indices that characterize resistance or susceptibility to PHS. Revisions In the first year, the US team acquired the costly Peckode weigh platform / individual bird I.D. system that was to provide the continuous (several times each day), automated weighing of birds, for a comprehensive monitoring of growth dynamics. However, data generated were found to be inaccurate and irreproducible, so making its use implausible. Henceforth, weighing was manual, this highly labor intensive work precluding some of the original objectives of using such a strategy of growth dynamics in selection procedures involving thousands of birds. Major conclusions, solutions, achievements 1. Healthy broilers were found to have greater oscillations in growth velocity and acceleration than PHS susceptible birds. This proved the scientific validity of our original hypothesis that such differences occur. 2. Growth rate in the first week is higher in PHS-susceptible than in PHS-resistant chicks. Artificial neural network accurately distinguished differences between the two groups based on growth patterns in this period. 3. In the US, the unilateral pulmonary occlusion technique was used in collaboration with a major broiler breeding company to create a commercial broiler line that is highly resistant to PHS induced by fast growth and low ambient temperatures. 4. In Israel, lines were obtained by genetic selection on PHS mortality after cold exposure in a dam-line population comprising of 85 sire families. The wide range of PHS incidence per family (0-50%), high heritability (about 0.6), and the results in cold challenged progeny, suggested a highly effective and relatively easy means for selection for PHS resistance 5. The best minimally-invasive diagnostic indices for prediction of PHS resistance were found to be oximetry, hematocrit values, heart rate and electrocardiographic (ECG) lead II waves. Some differences in results were found between the US and Israeli teams, probably reflecting genetic differences in the broiler strains used in the two countries. For instance the US team found the S wave amplitude to predict PHS susceptibility well, whereas the Israeli team found the P wave amplitude to be a better valid predictor. 6. Comprehensive physiological studies further increased knowledge on the development of PHS cardiopulmonary characteristics of pre-ascitic birds, pulmonary arterial wedge pressures, hypotension/kidney response, pulmonary hemodynamic responses to vasoactive mediators were all examined in depth. Implications, scientific and agricultural Substantial progress has been made in understanding the genetic and environmental factors involved in PHS, and their interaction. The two teams each successfully developed different selection programs, by surgical means and by divergent selection under cold challenge. Monitoring of the progress and success of the programs was done be using the in-depth estimations that this research engendered on the reliability and value of non-invasive predictive parameters. These findings helped corroborate the validity of practical means to improve PHT resistance by research-based programs of selection.
APA, Harvard, Vancouver, ISO, and other styles
10

Nellcor™ SpO₂ Pulse Oximetry. Touch Surgery Simulations, September 2021. http://dx.doi.org/10.18556/touchsurgery/2021.s0188.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Oximeter' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography