Relevant bibliographies by topics / Medical ventilators

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Academic literature on the topic 'Medical ventilators'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Medical ventilators"

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Halpern, P. "(A176) Mechanical Ventilation in Disasters: “To Intubate or Not to Intubate – That is the Question!”." Prehospital and Disaster Medicine 26, S1 (May 2011): s49—s50. http://dx.doi.org/10.1017/s1049023x11001749.

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The provision of mechanical ventilatory support for large numbers of casualties in disasters is a complex, controversial issue. Some experts consider this modality unsuitable for large disasters and a waste of resources better devoted to eminently salvageable victims. However, the reality has usually been that rescue teams bring with them some ventilatory capability, even if only for perioperative support. Also, there are many instances when the environment, the existing and potential capacities, allow for significant numbers of victims to be saved by providing artificial ventilation, that would otherwise have likely died. It is therefore important to discuss the issue, with all its complexity, so that the disaster preparedness and relief community fully understands its implications and makes informed, locally relevant decisions before and after disasters strike. The purpose of this presentation is to describe the ethical dilemmas, the technical and clinical considerations for such an endeavor. Ethical considerations: providing the most care to the most victims is the dictum of disaster medical management. Lowered standards of care are accepted and often the norm. However, in many moderate and even major disasters, the ability exists to save lives that will certainly be lost otherwise, by providing intensive care including mechanical ventilatory support, or may be provided if the managers so determine. Is it then ethical, to allow certain victims to die when such support may be available? What is the cost-benefit ratio of such a decision? Who should receive this limited resource? The young and healthy? The very sick? The salvageable? The postoperative? For how long? Until the international team leaves? Types of ventilator-dependency in disasters: (1) Primary ventilatory failure, normal lungs, prolonged ventilator dependency, e.g. botulinum toxin; (2) Combined ventilatory and hypoxemic failure, short to medium-term ventilator dependency, e.g. Sarin gas intoxication; (3) Primary hypoxemic failure, parenchymal lung injury, prolonged ventilator dependency, e.g. Anthrax, mustard gas, ricin; (4) Perioperative and prophylactic ventilatory support, short term but unpredictable. Ventilator supply versus demand: (1) Insufficient ventilators for first few hours only, then supplies come in; (2) Insufficient ventilators for days, then national or international relief expected; (3) Insufficient ventilators and no expected supplies. Care environment: (1) ICU, minority of casualties; (2) General floors: inexperienced nursing, medical staff; (3) Insufficient monitoring devices; (4) Insufficient numbers and quality of respiratory therapists; (5) Commercial companies normally providing technical support understaffed. Basic requirements from the ventilators: allows spontaneous ventilation, incorporates some alarms (ideally disconnect and minute volume), made by a reputable and stable company (will be there when the disaster strikes), low cost, user friendly, long shelf life, quick activation from storage, low weight and volume, few spares, few or generic disposables, little and simple maintenance, independent of compressed oxygen (i.e. electric, multiple voltages, long-life battery). The system: Mechanical ventilation is a complete patient care unit comprising: Bed and space, Oxygen supply, Vacuum, Cardiorespiratory monitor, Mechanical ventilator, Nursing staff, Medical staff, Expert consultatory staff, Logistic and technical support staff. Potential mechanical ventilators: (1) BVM or bag-valve-tube; (2) Transport-type, pneumatic or electrical ventilators; (3) Intermediate capability pneumatic, electrical or electronic ventilators; (4) Full capability intensive care ventilators; (5) Single patient use ventilators.
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Srinivasan, Shriya S., Khalil B. Ramadi, Francesco Vicario, Declan Gwynne, Alison Hayward, David Lagier, Robert Langer, Joseph J. Frassica, Rebecca M. Baron, and Giovanni Traverso. "A rapidly deployable individualized system for augmenting ventilator capacity." Science Translational Medicine 12, no. 549 (May 18, 2020): eabb9401. http://dx.doi.org/10.1126/scitranslmed.abb9401.

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Strategies to split ventilators to support multiple patients requiring ventilatory support have been proposed and used in emergency cases in which shortages of ventilators cannot otherwise be remedied by production or procurement strategies. However, the current approaches to ventilator sharing lack the ability to individualize ventilation to each patient, measure pulmonary mechanics, and accommodate rebalancing of the airflow when one patient improves or deteriorates, posing safety concerns to patients. Potential cross-contamination, lack of alarms, insufficient monitoring, and inability to adapt to sudden changes in patient status have prevented widespread acceptance of ventilator sharing. We have developed an individualized system for augmenting ventilator efficacy (iSAVE) as a rapidly deployable platform that uses a single ventilator to simultaneously and more safely support two individuals. The iSAVE enables individual-specific volume and pressure control and the rebalancing of ventilation in response to improvement or deterioration in an individual’s respiratory status. The iSAVE incorporates mechanisms to measure pulmonary mechanics, mitigate cross-contamination and backflow, and accommodate sudden flow changes due to individual interdependencies within the respiratory circuit. We demonstrate these capacities through validation using closed- and open-circuit ventilators on linear test lungs. We show that the iSAVE can temporarily ventilate two pigs on one ventilator as efficaciously as each pig on its own ventilator. By leveraging off-the-shelf medical components, the iSAVE could rapidly expand the ventilation capacity of health care facilities during emergency situations such as pandemics.
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Yeshurun, Tamir, Yoav Bar David, Alon Herman, Stav Bar-Sheshet, Ronen Zilberman, Gil Bachar, Alexander Liberzon, and Gideon Segev. "A simulation of a medical ventilator with a realistic lungs model." F1000Research 9 (November 5, 2020): 1302. http://dx.doi.org/10.12688/f1000research.25873.1.

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Background: The outbreak of COVID-19 pandemic highlighted the necessity for accessible and affordable medical ventilators for healthcare providers. To meet this challenge, researchers and engineers world-wide have embarked on an effort to design simple medical ventilators that can be easily distributed. This study provides a simulation model of a simple one-sensor controlled, medical ventilator system including a realistic lungs model and the synchronization between a patient breathing and the ventilator. This model can assist in the design and optimization of these newly developed systems. Methods: The model simulates the ventilator system suggested and built by the “Manshema” team which employs a positive-pressure controlled system, with air and oxygen inputs from a hospital external gas supply. The model was constructed using Simscape™ (MathWorks®) and guidelines for building an equivalent model in OpenModelica software are suggested. The model implements an autonomously breathing, realistic lung model, and was calibrated against the ventilator prototype, accurately simulating the ventilator operation. Results: The model allows studying the expected gas flow and pressure in the patient’s lungs, testing various control schemes and their synchronization with the patient’s breathing. The model components, inputs, and outputs are described, an example for a simple, positive end expiratory pressure control mode is given, and the synchronization with healthy and ARDS patients is analyzed. Conclusions: We provide a simulator of a medical ventilation including realistic, autonomously breathing lungs model. The simulator allows testing different control schemes for the ventilator and its synchronization with a breathing patient. Implementation of this model may assist in efforts to develop simple and accessible medical ventilators to meet the global demand.
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Pollard, J. "We'll breathe again [medical ventilators]." Engineering & Technology 15, no. 5 (June 1, 2020): 60–63. http://dx.doi.org/10.1049/et.2020.0508.

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Pearce, Joshua M. "A review of open source ventilators for COVID-19 and future pandemics." F1000Research 9 (March 30, 2020): 218. http://dx.doi.org/10.12688/f1000research.22942.1.

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Coronavirus Disease 2019 (COVID-19) threatens to overwhelm our medical infrastructure at the regional level causing spikes in mortality rates because of shortages of critical equipment, like ventilators. Fortunately, with the recent development and widespread deployment of small-scale manufacturing technologies like RepRap-class 3-D printers and open source microcontrollers, mass distributed manufacturing of ventilators has the potential to overcome medical supply shortages. In this study, after providing a background on ventilators, the academic literature is reviewed to find the existing and already openly-published, vetted designs for ventilators systems. These articles are analyzed to determine if the designs are open source both in spirit (license) as well as practical details (e.g. possessing accessible design source files, bill of materials, assembly instructions, wiring diagrams, firmware and software as well as operation and calibration instructions). Next, the existing Internet and gray literature are reviewed for open source ventilator projects and designs. The results of this review found that the tested and peer-reviewed systems lacked complete documentation and the open systems that were documented were either at the very early stages of design (sometimes without even a prototype) and were essentially only basically tested (if at all). With the considerably larger motivation of an ongoing pandemic, it is assumed these projects will garner greater attention and resources to make significant progress to reach a functional and easily-replicated system. There is a large amount of future work needed to move open source ventilators up to the level considered scientific-grade equipment, and even further work needed to reach medical-grade hardware. Future work is needed to achieve the potential of this approach by developing policies, updating regulations, and securing funding mechanisms for the development and testing of open source ventilators for both the current COVID19 pandemic as well as for future pandemics and for everyday use in low-resource settings.
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Pearce, Joshua M. "A review of open source ventilators for COVID-19 and future pandemics." F1000Research 9 (April 30, 2020): 218. http://dx.doi.org/10.12688/f1000research.22942.2.

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Coronavirus Disease 2019 (COVID-19) threatens to overwhelm our medical infrastructure at the regional level causing spikes in mortality rates because of shortages of critical equipment, like ventilators. Fortunately, with the recent development and widespread deployment of small-scale manufacturing technologies like RepRap-class 3-D printers and open source microcontrollers, mass distributed manufacturing of ventilators has the potential to overcome medical supply shortages. In this study, after providing a background on ventilators, the academic literature is reviewed to find the existing and already openly-published, vetted designs for ventilators systems. These articles are analyzed to determine if the designs are open source both in spirit (license) as well as practical details (e.g. possessing accessible design source files, bill of materials, assembly instructions, wiring diagrams, firmware and software as well as operation and calibration instructions). Next, the existing Internet and gray literature are reviewed for open source ventilator projects and designs. The results of this review found that the tested and peer-reviewed systems lacked complete documentation and the open systems that were documented were either at the very early stages of design (sometimes without even a prototype) and were essentially only basically tested (if at all). With the considerably larger motivation of an ongoing pandemic, it is assumed these projects will garner greater attention and resources to make significant progress to reach a functional and easily-replicated system. There is a large amount of future work needed to move open source ventilators up to the level considered scientific-grade equipment, and even further work needed to reach medical-grade hardware. Future work is needed to achieve the potential of this approach by developing policies, updating regulations, and securing funding mechanisms for the development and testing of open source ventilators for both the current COVID19 pandemic as well as for future pandemics and for everyday use in low-resource settings.
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Lugones, Ignacio, Roberto Orofino Giambastiani, Oscar Robledo, Martín Marcos, Javier Mouly, Agustín Gallo, Verónica Laulhé, and María Fernanda Biancolini. "A New Medical Device to Provide Independent Ventilation to Two Subjects Using a Single Ventilator: Evaluation in Lung-Healthy Pigs." Anesthesiology Research and Practice 2020 (December 30, 2020): 1–6. http://dx.doi.org/10.1155/2020/8866806.

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Background. The global crisis situation caused by SARS-CoV-2 has created an explosive demand for ventilators, which cannot be met even in developed countries. Designing a simple and inexpensive device with the ability to increase the number of patients that can be connected to existing ventilators would have a major impact on the number of lives that could be saved. We conducted a study to determine whether two pigs with significant differences in size and weight could be ventilated simultaneously using a single ventilator connected to a new medical device called DuplicARⓇ. Methods. Six pigs (median weight 12 kg, range 9–25 kg) were connected in pairs to a single ventilator using the new device for 6 hours. Both the ventilator and the device were manipulated throughout the experiment according to the needs of each animal. Tidal volume and positive end-expiratory pressure were individually controlled with the device. Primary and secondary outcome variables were defined to assess ventilation and hemodynamics in all animals throughout the experiment. Results. Median difference in weight between the animals of each pair was 67% (range: 11–108). All animals could be successfully oxygenated and ventilated for 6 hours through manipulation of the ventilator and the DuplicARⓇ device, despite significant discrepancies in body size and weight. Mean PaCO2 in arterial blood was 42.1 ± 4.4 mmHg, mean PaO2 was 162.8 ± 46.8 mmHg, and mean oxygen saturation was 98 ± 1.3%. End-tidal CO2 values showed no statistically significant difference among subjects of each pair. Mean difference in arterial PaCO2 measured at the same time in both animals of each pair was 4.8 ± 3 mmHg, reflecting the ability of the device to ventilate each animal according to its particular requirements. Independent management of PEEP was achieved by manipulation of the device controllers. Conclusion. It is possible to ventilate two lung-healthy animals with a single ventilator according to each one’s needs through manipulation of both the ventilator and the DuplicARⓇ device. This gives this device the potential to expand local ventilators surge capacity during disasters or pandemics until emergency supplies can be delivered from central stockpiles.
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Ishack, Stephanie, and Shari R. Lipner. "Use of 3D printing to support COVID-19 medical supply shortages: a review." Journal of 3D Printing in Medicine 5, no. 2 (June 2021): 83–95. http://dx.doi.org/10.2217/3dp-2020-0031.

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The novel coronavirus, COVID-19, created a pandemic with significant mortality and morbidity which poses challenges for patients and healthcare workers. The global spread of COVID-19 has resulted in shortages of personal protective equipment (PPE) leaving frontline health workers unprotected and overwhelming the healthcare system. 3D printing is well suited to address shortages of masks, face shields, testing kits and ventilators. In this article, we review 3D printing and suggest potential applications for creating PPE for healthcare workers treating COVID-19 patients. A comprehensive literature review was conducted using PubMed with keywords “Coronavirus disease 2019”, “COVID-19”, “severe acute respiratory syndrome coronavirus 2”, “SARS-CoV-2”, “supply shortages”, “N95 respirator masks”, “personal protective equipment”, “PPE”, “ventilators”, “three-dimensional model”, “three-dimensional printing” “3D printing” and “ventilator”. A summary of important studies relevant to the development of 3D-printed clinical applications for COVID-19 is presented. 3D technology has great potential to revolutionize healthcare through accessibility, affordably and personalization.
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Powell, Tia, Kelly C. Christ, and Guthrie S. Birkhead. "Allocation of Ventilators in a Public Health Disaster." Disaster Medicine and Public Health Preparedness 2, no. 1 (March 2008): 20–26. http://dx.doi.org/10.1097/dmp.0b013e3181620794.

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ABSTRACTBackground: In a public health emergency, many more patients could require mechanical ventilators than can be accommodated.Methods: To plan for such a crisis, the New York State Department of Health and the New York State Task Force on Life and the Law convened a workgroup to develop ethical and clinical guidelines for ventilator triage.Results: The workgroup crafted an ethical framework including the following components: duty to care, duty to steward resources, duty to plan, distributive justice, and transparency. Incorporating the ethical framework, the clinical guidelines propose both withholding and withdrawing ventilators from patients with the highest probability of mortality to benefit patients with the highest likelihood of survival. Triage scores derive from the sepsis-related organ failure assessment system, which assigns points based on function in 6 basic medical domains. Triage may not be implemented by a facility without clear permission from public health authorities.Conclusions: New York State released the draft guidelines for public comment, allowing for revision to reflect both community values and medical innovation. This ventilator triage system represents a radical shift from ordinary standards of care, and may serve as a model for allocating other scarce resources in disasters. (Disaster Med Public Health Preparedness. 2008;2:20–26)
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Choudhary, Abdul Hakim, Manisha K. Palaskar, Mohammad Kausar, Mahesh R., and D. K. Sharma. "Resource optimization through process re-engineering of inhalational therapy unit at a tertiary care public hospital." International Journal of Research in Medical Sciences 7, no. 12 (November 27, 2019): 4469. http://dx.doi.org/10.18203/2320-6012.ijrms20195502.

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Background: Salaries, supplies and machinery account for bulk of public funding necessitating efficient utilisation. Studies suggest that process re-engineering helps improve cost, quality, service, and speed. Disbanded once and re-commissioned, a centralized Inhalational Therapy Unit (ITU) banked and provided portable mechanical ventilators to the inpatient wards. A demand for new ventilators from ITU led to the present study involving its critical review and cost analysis.Methods: An interventional study was conducted at a large tertiary care public hospital in India from April 2015 to June 2015. Critical review of process of providing portable ventilators and cost analysis were conducted. Review of records of and interview with ITU personnel and nursing staff were carried out. Fundamental rethinking and radical redesign of the process was done with attention to human resource, costs, space and actual medical equipment utilization. Two fundamental questions of process re-engineering were deliberated upon: “Why do we do what we do?” “And why do we do it the way we do?” Fundamental rethinking for new process was organized around the outcome.Results: Average utilization coefficient was 6.2% (3.3% to 12.1%). Ventilators utilized per day were 1.43. Expenditure on salaries was INR 315000 per month and INR 10500 per day. Low utilization offered low value for expenses incurred. All activities in ITU focused on “provision of ventilators” (outcome) and the old rule was, “If one needed a ventilator one must contact ITU”. Since nurses were using the “outcome” and performed activities of arranging, they were handed-over the ventilators (based on utilisation patterns). ITU was disbanded, human resource and space were re-allocated to various hospital areas (costs tied were done away with) with no adverse effect on hospital functioning.Conclusions: Process re-engineering led to improved healthcare delivery, curtailed delays in hospital processes, optimised costs involved in human resources and medical equipment.
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Dissertations / Theses on the topic "Medical ventilators"

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Fouladinejad, Farid. "Training in the use and maintenance of medical equipment, and analysis of current protocols." Thesis, Queen Mary, University of London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287482.

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Maric, Danilo. "Firmware development of a User Interface on medical devices of DIMA ITALIA Srl." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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This dissertation was written based on an internship experience at Dima Italia Srl, a leader in designing, production and marketing of medical ventilators. Once these ventilators were simple machines for breathing support, manually pumping the air in and out. Today, medical ventilators are computerized machines, electronically controlled by a small embedded system. They feature a plethora of available modes and an easy-to-use graphical interface. Exactly this is the topic of the thesis: developing a firmware with graphical interface for the next ventilator, produced and sold by Dima Italia. The firmware is based on C++ language and was developed in a Qt Creator framework, ideal for developing applications with graphical interfaces on Linux-based devices. In the paper are found all the pages of the firmware, along with the logic of operation of the application. Moreover, all the details about the operation and modes of a medical ventilator are also found in the document. In the end, there's a section related to deployment of a Qt application on a device, along with the issues and bugs encountered during the development process.
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Zhuo, Yuzhen. "Non-intrusive Patient Simulator for Medical Ventilator Software Verification." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-219150.

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Testing distributed real-time systems has been pervasively proven a challenging task within numerous industries. When the real-time nature of a system is combined with safety critical medical systems, having a reliable test system is of major importance. However, the hardware dependency makes it very difficult to test medical ventilator software system in failure mode and requires manual manoeuvres, prohibiting test automation for numerous features. To achieve entire test automation, an embedded patient simulator is proposed in this thesis. A simulator that simulates a human lung runs separately on embedded platform and interacts with the ventilator so that all the hardware dependencies could be removed. It is of non-intrusive implementation and all the real-time properties  of the ventilator software system could be tested on target. Software-implemented fault injection is realized as well, which is a significant step to fault-tolerance testing for safety critical system.
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Bäcklund, Annette, and Lisa Holmström. "Jämförelse mellan slutet och öppet sugsystem vid ventilator-associerad pneumoni." Thesis, Malmö högskola, Fakulteten för hälsa och samhälle (HS), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-25685.

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Ventilator-associerad pneumoni (VAP) är en vanlig förekommande komplikationhos patienter som vårdas på intensivvårdsavdelningar (IVA). Komplikationenleder till förlängd vårdtid, ett ökat lidande för patienten och högre mortalitet. Påen intensivvårdsavdelning på ett sjukhus i södra Sverige används idag flerametoder för att förebygga VAP, dock används ej slutet sugsystem som preventivmetod. Syftet med denna litteraturstudie var att undersöka om slutet sugsystemminskade förekomsten av VAP jämfört med öppet sugsystem. Sju vetenskapligaartiklar granskades och kvalitetsbedömdes. Resultatet visade ingen skillnad iförekomsten av VAP vid användandet av slutet kontra öppet sugsystem.
Ventilator-associated pneumonia (VAP) is a common complication occurring inpatients treated in intensive care units (ICU). This complication leads to extendedcare, increased suffering for the patient and higher mortality. In ICU on auniversity hospital in south of Sweden several methods to prevent VAP are used.Closed tracheal suction system is today not a method used for prevent VAP inICU Malmo. The purpose of this literature review was to examine whether theclosed tracheal suction system reducing the incidence of VAP compared withopen tracheal suction system. Seven randomized controlled trials were reviewedand quality assessed. The results showed no difference in the incidence of VAPin the use of closed versus open tracheal suction system.
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Commander, John Vincent. "The efficiency of bag-valve mask ventilations by medical first responders and basic emergency medical technicians." CSUSB ScholarWorks, 2003. https://scholarworks.lib.csusb.edu/etd-project/2310.

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Bag-valve mask (BVM) ventilation maintains a patient's oxygenation and ventilation until a more definitive artificial airway can be established. In the prehospital setting of a traffic collision or medical aid scene this is performed by an Emerency Medical Technician or medical first responder. Few studies have looked at the effectiveness of Bag-valve masks (BVM) or the complication rate of ventilating an unprotected airway. The purpose and goal of this study is to educate both medical first responders and basic emergency medical technicians.
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Johansson, Tobias, and Pernilla McCartney. "Ett glapp i tiden : Patienters upplevelse av att vårdas i ventilator." Thesis, Högskolan i Borås, Institutionen för Vårdvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-18958.

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Indikationen till att vårdas på en intensivvårdsavdelning (IVA) är i praktiken att patienten bör övervakas på grund akut svikt i vitala organ, som t.ex. i cirkulation eller respiration mm. Att vara intuberad innebär att stämbanden är bortkopplade vilket i sin tur leder till svårigheter för patienten att kommunicera.Syftet med studien är att undersöka patientens upplevelse av att vårdas i ventilator på en intensivvårdsavdelning. Kvalitativ litteraturstudie på upp till 10 år gamla artiklar har analyserats enligt Graneheim och Lundmans metod. I resultatet har funnits att minnen från vårdtiden har emotionella inslag relaterat till endotrachealtuben, men också till en tidsperiod präglat av minnesluckor som blir till en upplevelse av brist på kontroll. När information ges innebär det att vederbörande får inblick om sin vård och sitt tillstånd, detta medför ökade kunskaper och en ökad befogenhet över sin situation. Drömmar och illusioner upplevdes av patienterna, det var svårt att skilja på vad som var dröm eller verklighet. Patienter upplevde rädsla då de inte visste vad som kommer att hända med dem samt vad som förväntas av dem som vårdtagare. Bristen på kommunikation gör att patienterna inte får den information som de är berättigade till och utsätts därför för onödigt lidande genom rädsla och oro. Sjuksköterskan har en uppgift att se till att patienten får den information de har rätt till. Dagböcker och fotografier hjälpte patienterna att lämna vårdtiden på IVA bakom sig.

Program: Specialistsjuksköterskeutbildning med inriktning mot intensivvård

Uppsatsnivå: D

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Benscoter, Dan T. "Ventilation Reconciliation: Improving the Accuracy of Documented Home Ventilator Settings in a Pediatric Home Ventilator Clinic." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin155421301584871.

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Kilander, Johanna, and Madeleine Frisell. "Variable expiration control for an intensive care ventilator." Thesis, Linköpings universitet, Institutionen för medicinsk teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157761.

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Critical care patients are often connected to ventilators, to support or replace their breathing. The ventilators deliver a mixture of gas to the patient by applying a specific volume or pressure, and then the patient exhales passively. This thesis is based of the hypothesis that a slower reduction of the expiration pressure could benefit intensive care patients connected to a ventilator. To enable research within the area, a device which can control the expiration is needed. In this thesis project, an expiration valve was controlled to create different pressure patterns during expiration. To facilitate the research and the usage of the expiration control, an application software was created with the purpose to simulate relevant pressure, flow and volume curves. The prototype is an expiration cassette created for the ventilator Servo-i by Maquet Getinge Group. To enable flexibility, the prototype is external and no information is transmitted from or to the ventilator. The prototype has its own flow and pressure sensors. The different pressure patterns which the prototype uses are designed as a linear decrease and as if a constant resistance was added to the system. The user can also create their own pressure pattern, by deciding 20 pressure points in the duration of two seconds. The simulation application was designed with the ability to simulate the same pressure patterns available with the prototype. By using a lung model, it is possible to simulate the ideal pressure, flow and volume in the lungs which can be expected from the chosen expiration control. During the implementation, two different types of lung models were evaluated in order to determine the specificity required. The prototype was tested with settings which were chosen to challenge the performance of the control. Some problematic areas were detected, such as high pressures or large volumes. However, the prototype was judged to perform well enough to be used in animal trials. The lung model used for the simulation application was a simple model of the lung, consisting of a resistor and a capacitor in series. The simulations were compared with the real system with the purpose to get an indication on the difference between theory and reality. The application presents the expected behavior when using the expiration control. However, it should be kept in mind by the user that the application represents a theoretical model.
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Sundbom, Cristine. "THE TUBE : Formgiving discourse - not form follows norm. The medical ventilator and the neglected tube." Thesis, Konstfack, Industridesign, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-3192.

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If form follows normative discourse in medical design, what happens to the gestalt when you include related discourses of the medical ventilator in the design process? My aim has been to integrate critical industrial design and with an exploratory aesthetic approach. This aesthetic approach aimed to create an on going exchange between the development of concepts inspired by theory and the creative sketching of 3-D form.The medical ventilator can be divided in three parts: 1. The technical part of the machine, 2. The monitor with an interface, and 3. The tubes that is the connection to the patient. In the beginning of the project I was working with the part of the medical ventilator that connects to the patient, ie. the tubes. My methods at this point were conducting interviews with caretakers, filming nurses handling the tube and having informal discussions with doctors and nurses. Using my own embodied experience is also part of my method since I am a licenced voctional nurse with experience from the ICU ward.I began my project by studiyng the part of the ventilator that connects to the patient. After I had been working with the project for some time I started to realise that what I was refering to as an important part of the medical ventilator, was just seen by others as a “tube”. I decided to change the roles, and to work only on the tube, and not on the rest of the apparatus. When I made this discourse shift, I tried to understand why the tube had been neglected in medical design. The tube is de facto an essential part of the ventilator. It is the important link between the patient and the apparatus, and without it, there is no treatment. Despite of this, the ventilator tube is not prioritised in medical design. I used gender theory about hierarchy of power and work division to understand this matter and concluded that the patient has low status in hospital care. Technical intensive care has high status, while patient related care as geriatric care has low status. In similar manner the hierarchy exists in the medical ventilator. The part of the product that contains the technology has high staus, while the part that is low tech and connected to the patient, the ventilator tube, has low status.My combined theoretical and explorative aesthetic approach didn’t only prove to change the gestalt, allowing for bodily form that challenges the constructed dichotomy of the hospital discourse. It also changed the entire focus on the product by making the tube central. It also inspired for a solution moving from a visual interface to a haptic and tactile interface. Some questions this design project attempts to discuss: What does it mean to give bodily form to this medical design project? How does the use of a tactility and haptics interface on a surface that may resemble a soft body help response from the staff and relatives as they encounter with the patient? In what way can the medical design process develop in a way to help patients regain humanity
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Israelson-Skogsberg, Åsa. "Sju personliga assistenters erfarenheter av att arbeta i hemmet där en person är beroende av ventilator." Thesis, Högskolan i Borås, Institutionen för Vårdvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-16522.

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Idag kan sjukvården rädda livet på allt fler människor. Dessa personer kommer till slut hem och kan många gånger ha avancerade vårdbehov. Om personen har behov av ventilatorbehandling i hemmet är det personliga assistenter som arbetar hemma hos vårdtagaren/personen. Det finns få svenska studier som fokuserar på arbetssituationen för de personliga assistenterna. Dessa har ett mycket stort ansvar i kombination med att de samtidigt har lägst utbildning. Genom att få ökad kunskap om personliga assistenters erfarenheter kan vården av ventilatorberoende personer i hemmet utvecklas och kvalitetssäkras. Syftet med studien är att beskriva personliga assistenters erfarenheter av att arbeta i hemmet där en person är beroende av ventilator. Sju personliga assistenter har intervjuats, data har analyserats med kvalitativ innehållsanalys.Resultatet presenteras som fyra kategorier och elva underkategorier. De personliga assistenternas erfarenhet är att deras arbete är ansvarsfullt, engagerande samt kräver ett professionellt förhållningssätt. Av betydelse är att organisationen kring vårdtagaren är tydlig, det är viktigt för att assistenterna ska kunna känna sig trygga när de arbetar. Vidare visar resultatet att personliga assistenter önskar utbildning och handledning i sitt arbete. Resultatet av studien kan användas för att diskutera personliga assistenters arbetssituation, behov av tydlig organisation, handledning och utbildning. Det bör vara ett gemensamt ansvar för den specialiserade vården på sjukhuset samt kommunernas hemsjukvård att bygga upp en organisation som kan möta assistenternas behov gentemot den ventilatorberoende personen.
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Books on the topic "Medical ventilators"

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1955-, Mishoe Shelley C., ed. Ventilator concepts: A systematic approach to mechanical ventilators. San Diego, Calif: California College for Health Sciences, 1987.

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Ventilators: Theory and clinical application. 2nd ed. St. Louis: Mosby Year Book, 1992.

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Ventilators: Theory and clinical application. St. Louis: Mosby, 1986.

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Fornataro-Clerici, Lisa M. Clinical management of adults requiring tracheostomy tubes and ventilators: A reference guide for healthcare practitioners. Gaylord, MI: Northern Speech Services, Inc., 1997.

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Gilgoff, Irene S. Breath of life: The role of the ventilator in managing life-threatening illnesses. Lanham, Md: Scarecrow Press, 2001.

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Mechanical ventilation: Physiological and clinical applications. St. Louis: Multi-Media Pub., 1986.

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Mechanical ventilation: Physiological and clinical applications. 2nd ed. St. Louis: Mosby Year Book, 1992.

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Mechanical ventilation: Physiological and clinical applications. 3rd ed. St. Louis: Mosby, 1998.

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Management of the mechanically ventilated patient. 2nd ed. St. Louis, Mo: Saunders Elsevier, 2007.

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MacIntyre, Neil R., and Richard D. Branson, eds. Mechanical ventilation. Philadelphia, Pennsylvana: W.B. Saunders, 2001.

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Book chapters on the topic "Medical ventilators"

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Peyn, Thomas. "Long-Term Ventilators for Intensive Therapy." In Springer Handbook of Medical Technology, 525–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-540-74658-4_27.

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Powell, Douglas Frederic. "Ventilator Strategies." In Operational and Medical Management of Explosive and Blast Incidents, 539–51. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40655-4_39.

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Blasio, Attilio De. "Medical Conditions." In Ventilatory Support and Oxygen Therapy in Elder, Palliative and End-of-Life Care Patients, 85–88. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-26664-6_11.

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Thiriet, Marc. "Medical Images and Physiological Signals." In Biomathematical and Biomechanical Modeling of the Circulatory and Ventilatory Systems, 441–85. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-9469-0_5.

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Bhutkar, Ganesh, Dinesh Katre, G. G. Ray, and Shahaji Deshmukh. "Usability Model for Medical User Interface of Ventilator System in Intensive Care Unit." In IFIP Advances in Information and Communication Technology, 46–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41145-8_5.

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Ajčević, Miloš, U. Lucangelo, W. A. Zin, and A. Accardo. "When the Intensive Care Ventilator Technology Reaches the Operating Room: Advancing Ventilation in Anesthesia." In XIV Mediterranean Conference on Medical and Biological Engineering and Computing 2016, 758–61. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32703-7_147.

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Peranonti, E. G., M. A. Klados, C. L. Papadelis, D. G. Kontotasiou, C. Kourtidou-Papadeli, and P. D. Bamidis. "Can the EEG Indicate the FiO2 Flow of a Mechanical Ventilator in ICU Patients with Respiratory Failure?" In XII Mediterranean Conference on Medical and Biological Engineering and Computing 2010, 827–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13039-7_209.

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Bhutkar, Ganesh, G. G. Ray, Dinesh Katre, and Shahaji Deshmukh. "Design of UI Component Model for Evaluation of Medical UI of Ventilator System in Intensive Care Unit." In ICoRD’15 – Research into Design Across Boundaries Volume 1, 527–37. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2232-3_46.

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Arney, David, Julian M. Goldman, Susan F. Whitehead, and Insup Lee. "Improving Patient Safety with X-Ray and Anesthesia Machine Ventilator Synchronization: A Medical Device Interoperability Case Study." In Biomedical Engineering Systems and Technologies, 96–109. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11721-3_7.

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Baura, Gail. "Mechanical ventilators." In Medical Device Technologies, 257–79. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-811984-6.00010-6.

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Conference papers on the topic "Medical ventilators"

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M, Arathy, and Karthi Balasubramanian. "Fuzzy Logic based Failure Modes and Effects Analysis on Medical Ventilators." In 2020 5th International Conference on Communication and Electronics Systems (ICCES). IEEE, 2020. http://dx.doi.org/10.1109/icces48766.2020.9138016.

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Battista, Luigi, Salvatore Andrea Sciuto, and Andrea Scorza. "Preliminary evaluation of a fiber-optic sensor for flow measurements in pulmonary ventilators." In 2011 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2011. http://dx.doi.org/10.1109/memea.2011.5966671.

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S., Mojdeh, Sadri A.R., Nabi M.M., Emadian H., and Rahimi M. "Designing the vocal alarm and improving medical ventilator." In 2010 17th Iranian Conference Of Biomedical Engineering (ICBME 2010). IEEE, 2010. http://dx.doi.org/10.1109/icbme.2010.5704986.

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Druma, Adriana M., and Khairul M. Alam. "Combined Heat and Mass Transfer in Porous Media Heat Exchanger." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32093.

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A numerical and experimental study of heat and mass transfer has been carried out for an energy recovery ventilator with a porous media heat exchanger. The energy recovery ventilator selected for this study has a rotary periodic heat exchanger that can transfer heat and moisture from one air stream to another. Such heat exchangers can be operated with high effectiveness by using a low-cost porous matrix as the heat exchanger medium. The influence of porosity in the matrix has been studied numerically and the performance of the energy recovery ventilator in recovering both heat and moisture has been modeled.
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Miller, Bailey, Frank Vahid, and Tony Givargis. "Digital mockups for the testing of a medical ventilator." In the 2nd ACM SIGHIT symposium. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2110363.2110473.

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Arney, David, Julian M. Goldman, Insup Lee, Ersel Llukacej, and Susan Whitehead. "Use Case Demonstration: X-Ray/Ventilator." In 2007 Joint Workshop on High Confidence Medical Devices, Software, and Systems and Medical Device Plug-and-Play Interoperability - HCMDSS-MD PnP '07. IEEE, 2007. http://dx.doi.org/10.1109/hcmdss-mdpnp.2007.35.

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Deshpande, Girish, Gautham Oroskar, and Derek Oswald. "A Portable Handheld Oxygen Blender: A Novel Design to Reduce Early Oxygen Toxicity." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36619.

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Oxygen is an essential therapeutic agent used extensively in all hospitals for patients with compromised function of the respiratory or cardiac systems. All patients (with the exception of neonates with certain heart diseases) are resuscitated with 100% oxygen. The American Heart Association Guidelines for Resuscitation state that it is essential in the post-resuscitative phase to decrease the concentration of O2 provided to keep oxyhemoglobin saturation (SpO2) > 94%, with a goal of avoiding hyperoxia while ensuring adequate oxygen delivery. Hyperoxia has been shown to be responsible for worsening tissue injury via oxidative damage following ischemia-reperfusion. Therefore, it is important in the post-resuscitative phase to use the lowest inspired oxygen concentration (FiO2) that will maintain SpO2 ≥ 94%. To address this, clinicians use oxygen blenders: devices that mix room air (21% O2) and medical grade oxygen (100% O2) to create a desirable FiO2. Current oxygen blenders have the disadvantage of being wall-mounted, bulky, and are limited to a small set of oxygen delivery devices (nebulizers, mechanical ventilators) with which they can interface. We developed an oxygen blending device capable of mixing room air and 100% O2 using the venturi principle. The device features a cylindrical body with a venturi nozzle and an entrainment window. It is handheld, portable, and machined from acrylic plastic. An oxygen blender with these features allows for appropriate oxygen therapy during patient transport. As oxygen flows through the device from the inlet orifice, atmospheric air is drawn in through the window, mixed, and then delivered to the patient through the outlet orifice. We designed the outlet orifice to have the same dimensions as the inlet orifice, allowing for universal integration with any device that connects to standard oxygen tubing. The entrainment window area can be adjusted by twisting a cover over the body of the blender, thus adjusting the FiO2 delivery. Using a venturi nozzle of 6.35 mm in diameter and an entrainment window area of 97 mm2, we achieved FiO2 ranging from 40% to 50% using input flow of 100% O2 at 6 L/min at 50 psi (via rotameter). The key feature of this device is that it can be interposed between any standard oxygen tubing allowing control of FiO2 at the bedside of the patient in hospital or during transport. Further work is needed to achieve a wider FiO2 range.
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Renganathan B S, Preejith S P, Sridhar Nagaiyan, Jayaraj Joseph, and Mohanasankar Sivaprakasam. "System design to prevent Ventilator Associated Pneumonia." In 2017 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2017. http://dx.doi.org/10.1109/memea.2017.7985869.

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Hasan, Md Mahmudul, Md Rafiul Islam, Wasif Ahmed, Md Masrur Saqib, Md Rafi Rahman, Md Rafi Uddin, and Md Masud Rana. "Cost Effective Bluetooth Technology Based Emergency Medical Ventilator for Respiratory Support." In 2021 International Conference on Automation, Control and Mechatronics for Industry 4.0 (ACMI). IEEE, 2021. http://dx.doi.org/10.1109/acmi53878.2021.9528262.

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Simini, Franco, Adrian Monkas, Gonzalo Carballo, Jonatan Aguirre, Fabian Ferreira, and Santiago Gomez. "Mechanical Ventilator spontaneous breathing detection tested by robot SIMVENT." In 2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2015. http://dx.doi.org/10.1109/memea.2015.7145224.

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Reports on the topic "Medical ventilators"

1

Lewis, Teresa R., Thomas E. Philbeck, and Jr. Testing and Evaluation of the Bear Medical Systems, Inc. Bear 33 Volume Ventilator System. Fort Belvoir, VA: Defense Technical Information Center, December 1990. http://dx.doi.org/10.21236/ada241836.

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Jones, Allen E. Testing and Evaluation of the Omni-Tech Medical Inc, Omni-Vent, Series D MRI Ventilator. Fort Belvoir, VA: Defense Technical Information Center, May 1995. http://dx.doi.org/10.21236/ada294950.

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