Relevant bibliographies by topics / Right ventricular systolic time interval

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Right ventricular systolic time interval'

Author: Grafiati
Published: 9 March 2023
Last updated: 31 July 2025

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Journal articles on the topic "Right ventricular systolic time interval"

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Zatko, F. J., P. Martin, and R. C. Bahler. "Time course of systolic loading is an important determinant of ventricular relaxation." American Journal of Physiology-Heart and Circulatory Physiology 252, no. 3 (1987): H461—H466. http://dx.doi.org/10.1152/ajpheart.1987.252.3.h461.

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We studied the dependency of left ventricular relaxation on the timing of an abrupt increase in systolic load. In 10 canine isolated heart-lung preparations, a load step of 15 mmHg was imposed at specific intervals throughout systole, and the time of loading was defined as the interval from the R wave to the completion of the load step (R-load interval). Preload was held constant. The right atrium was paced at a cycle length of 450 ms. The decay of left ventricular pressure during isovolumic relaxation was described by a single exponential time constant (Texp). Load effects on isovolumic relax
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Yang, Ling, and Rong Yan. "Correlation between Electrocardiogram Changes and Right Ventricular Systolic Function in Patients with Chronic Atrial Fibrillation." Heart Surgery Forum 27, no. 5 (2024): E528—E532. http://dx.doi.org/10.59958/hsf.7355.

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Background: Chronic atrial fibrillation (CAF) induces various electric disturbances, and a single mutation can cause multifarious phenotypes or combinations. Identifying the correlation of electrocardiogram changes corresponding to the disorders of electrical activity with right ventricular systolic function (RVSF) is important for the treatment and prognosis of CAF. Therefore, this study explored the correlation of electrocardiogram changes and RVSF in patients with CAF. Methods: From March 2022, to March 2023, 97 patients with CAF admitted to the Department of Cardiology of our hospital (stu
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Bodh, Deepti, Mozammel Hoque, and Abhishek Chandra Saxena. "Echocardiographic study of healthy Indian Spitz dogs with normal reference ranges for the breed." Veterinary World 12, no. 6 (2019): 740–47. http://dx.doi.org/10.14202/vetworld.2019.740-747.

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Aim: The present study was aimed to determine the normal reference values of M-mode echocardiographic measurements in healthy Indian Spitz dogs and evaluate the influence of gender and body weight on these measurements. Materials and Methods: M-mode echocardiography was performed in twenty-four clinically healthy conscious Indian Spitz dogs, aged 3-5 years and weighing 7-18 kg. Measurements were made from the right parasternal long axis left ventricular outflow tract view of the heart. The parameters recorded were: Left ventricular internal dimension, interventricular septal thickness and left
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Her, Charles, and Elizabeth A. M. Frost. "Assessment of right ventricular function by right ventricular systolic time intervals in acute respiratory failure." Critical Care Medicine 27, no. 12 (1999): 2703–6. http://dx.doi.org/10.1097/00003246-199912000-00017.

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Lee, Simon, Irene D. Lytrivi, Zhanna Roytman, Hyun-Sook Helen Ko, Cheryl Vinograd, and Shubhika Srivastava. "Cardiomyopathy in children: Can we rely on echocardiographic tricuspid regurgitation gradient estimates of right ventricular and pulmonary arterial pressure?" Cardiology in the Young 26, no. 7 (2016): 1406–13. http://dx.doi.org/10.1017/s1047951116000020.

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AbstractIntroductionAgreement between echocardiography and right heart catheterisation-derived right ventricular systolic pressure is modest in the adult heart failure population, but is unknown in the paediatric cardiomyopathy population.MethodsAll patients at a single centre from 2001 to 2012 with a diagnosis of cardiomyopathy who underwent echocardiography and catheterisation within 30 days were included in this study. The correlation between tricuspid regurgitation gradient and catheterisation-derived right ventricular systolic pressure and mean pulmonary artery pressure was determined. Ag
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Jacobs, Gilbert, and David H. Knight. "M-Mode echocardiographic measurements in nonanesthetized healthy cats: Effects of body weight, heart rate, and other variables." American Journal of Veterinary Research 46, no. 8 (1985): 1705–11. https://doi.org/10.2460/ajvr.1985.46.08.1705.

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SUMMARY Body weight, heart rate, and 19 M-mode echocardiographic variables were measured in 41 nonanesthetized healthy cats. Estimated limits were determined for the echocardiographic variables, and each variable was then correlated to body weight, heart rate, and the 18 other variables. A significant (P < 0.05) positive correlation to body weight was found with aortic diameter, left atrial dimension, septal and left ventricular systolic and left ventricular diastolic wall thicknesses, and left and right ventricular diastolic and right ventricular systolic internal dimensions. Significant i
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Nguyen Quoc, Thai, and Vu Nguyen Anh. "STUDY OF RIGHT VENTRICULAR DP/DT INDEX IN PATIENT WITH MITRAL STENOSIS BY DOPPLER ECHOCARDIOGRAPHY." Volume 8 Issue 3 8, no. 3 (2018): 19–30. http://dx.doi.org/10.34071/jmp.2018.3.3.

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Objectives: To use echocardiographic dP/dt to assess the right ventricular function in patients with mitral stenosis. Subjects and methods: 48 patients with pulmonary hypertension due to mitral stenosis with everage age of 52.75 ± 13.09 years, were hospitalized in Department of Internal Cardiology and Cardiothoracic Department of Hue Central Hospital about time 3/2015 to 7/2017. All of patients had been measured right ventricular dP/dt index by Doppler echocardiograph. The method of research is a cross sectional study. Result: DP/dt should be reduced to the severity of pulmonary hypertension i
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Xu, Hongyuan, Jinyi Li, Guoqiang Zhong, et al. "Characteristics of the Dynamic Electrocardiogram in the Elderly with Nonvalvular Atrial Fibrillation Combined with Long R-R Intervals." Evidence-Based Complementary and Alternative Medicine 2021 (November 10, 2021): 1–7. http://dx.doi.org/10.1155/2021/4485618.

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Objective. To investigate the characteristics of dynamic electrocardiogram and their clinical implications in elderly patients with nonvalvular atrial fibrillation combined with long R-R intervals. Methods. Elderly patients diagnosed with nonvalvular atrial fibrillation who were admitted as an inpatient or attended the outpatient department from January 2015 to January 2020 were selected. Patients were divided into two groups based on the presence of a long R-R interval. The characteristics and therapeutic significance of dynamic electrocardiogram between the two groups were compared. Results.
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Colombo, Costanza Natalia Julia, Francesco Corradi, Valentino Dammassa, et al. "Time Interval Between Right Ventricular Early Diastolic Velocity by Tissue and Pulse Wave Doppler: An Index of Right Atrial Pressure in Pulmonary Hypertension Patients." Journal of Clinical Medicine 13, no. 21 (2024): 6349. http://dx.doi.org/10.3390/jcm13216349.

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Background: A reversal of time difference between the onset of early diastolic velocity (e’) during tissue Doppler imaging and the onset of mitral inflow (E) has been observed in cases of elevated left atrial pressure. Whether this interval (Te’-E) may be useful to assess right atrial pressure has never been investigated, neither in healthy subjects nor in pulmonary hypertension patients. Methods: Right ventricular Te’-E was assessed in patients with pre-capillary pulmonary hypertension and compared with healthy volunteers who underwent comprehensive echocardiography examination. Te’-E is the
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Her, Charles, Hideo Koike, and James O'Connell. "ESTIMATED RIGHT VENTRICULAR SYSTOLIC TIME INTERVALS FOR THE ASSESSMENT OF RIGHT VENTRICULAR FUNCTION IN ACUTE RESPIRATORY DISTRESS SYNDROME." Shock 31, no. 5 (2009): 460–65. http://dx.doi.org/10.1097/shk.0b013e31818ba1f4.

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Dissertations / Theses on the topic "Right ventricular systolic time interval"

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ALBERTI, ELENA. "EVALUATION OF PULMONARY ARTERY STIFFNESS IN ASTHMA AFFECTED HORSES." Doctoral thesis, Università degli Studi di Milano, 2022. http://hdl.handle.net/2434/916663.

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The present research evaluated Pulmonary Artery Stiffness (PAS) and right ventricular systolic time intervals (RVSTIs) in horses with mild/moderate (MEA) and severe (SEA) equine asthma and in healthy horses. In human medicine, PAS is a pulsed-wave (PW) Doppler echocardiographic parameter useful in assessing an increase in pulmonary artery stiffness due to remodeling of the vessel wall caused by chronic diseases. Moreover, PAS in humans is used as an early indicator of pulmonary hypertension. RVSTIs, such as acceleration time (AT), ejection time (ET) and acceleration time index (AT/ET), are ot
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Book chapters on the topic "Right ventricular systolic time interval"

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Chew, Michelle S. "Right ventricular function." In Oxford Textbook of Advanced Critical Care Echocardiography, edited by Anthony McLean, Stephen Huang, and Andrew Hilton. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198749288.003.0008.

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The right ventricle (RV) has historically been given less importance than the left. There are important anatomical differences, including several intracardiac structures that may complicate echocardiographic assessments. The right heart is sensitive to changes in pressure and its function is affected by common interventions in critical care such as fluid loading and positive pressure ventilation. Right and left ventricular functions are inextricably linked, and both systolic and diastolic ventricular interdependence occur. The echocardiographic examination of the RV includes an assessment of s
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Slama, Michel, and Julien Maizel. "Pulmonary hypertension." In Oxford Textbook of Advanced Critical Care Echocardiography, edited by Anthony McLean, Stephen Huang, and Andrew Hilton. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198749288.003.0009.

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Acute pulmonary hypertension (PH) is common in ICU patients, particularly in septic shock, acute respiratory distress syndrome (ARDS), pulmonary embolism, and cardiac heart failure. Although many patients with lung diseases develop chronic PH, primary pulmonary arterial hypertension is less frequent, but still can be observed in ICU patients. Pulmonary arterial pressure (PAP) can be assessed using continuous-wave Doppler with the help of colour Doppler. Tricuspid regurgitation can be recorded with systolic as well as mean PAP estimated respectively from maximal and mean velocity of flow. Excel
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Haydock, Paul M., and Peter J. Cowburn. "Cardiac resynchronization therapy." In Oxford Textbook of Heart Failure, edited by Andrew L. Clark, Roy S. Gardner, and Theresa A. McDonagh. Oxford University Press, 2022. http://dx.doi.org/10.1093/med/9780198766223.003.0060.

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This chapter examines cardiac resynchronization therapy (CRT), or biventricular pacing (BVP), which is now well established as a therapeutic option for selected, symptomatic patients with heart failure due to left ventricular systolic dysfunction and reduced ejection fraction (HFrEF) and a prolonged QRS interval. Numerous well-designed trials, in conjunction with more than a decade of clinical experience, have demonstrated the efficacy of CRT in improving symptoms, reducing hospitalizations, and prolonging survival, when combined with optimal medical therapy in this patient group. CRT improves
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Maceira, Alicia M., and Alistair A. Young. "Global and regional cardiac function." In The EACVI Textbook of Cardiovascular Magnetic Resonance, edited by Massimo Lombardi, Sven Plein, Steffen Petersen, et al. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198779735.003.0014.

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Cardiovascular magnetic resonance is currently the most accurate and reproducible method for the measurement of biventricular global and regional systolic function, as well as diastolic and atrial function. Regional wall motion can be visually evaluated and quantified with tissue tagging or feature tracking analysis techniques. Wall motion analysis is usually performed at rest but can also be done with low-dose and high-dose dobutamine. Segmental strain is best measured with tissue tagging or displacement-encoded phase contrast imaging. Current analysis software enables the measurement of vent
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Verma, Atul Kumar, Indu Saini, and Barjinder Singh Saini. "Electrocardiogram Dynamic Interval Feature Extraction for Heartbeat Characterization." In Medical Data Security for Bioengineers. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7952-6.ch012.

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In the chapter, dynamic time domain features are extracted in the proposed approach for the accurate classification of electrocardiogram (ECG) heartbeats. The dynamic time-domain information such as RR, pre-RR, post-RR, ratio of pre-post RR, and ratio of post-pre RR intervals to be extracted from the ECG beats in proposed approach for heartbeat classification. These four extracted features are combined and fed to k-nearest neighbor (k-NN) classifier with tenfold cross-validation to classify the six different heartbeats (i.e., normal [N], right bundle branch block [RBBB], left bundle branch blo
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Singh, Aishwarya, Rohit Mishra, and Monika Moni. "Cardiomyopathy: Exploring the Causes, Prevention and Management of Cardiomyopathy." In Cardiology and Cardiovascular Medicine. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1006610.

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Cardiomyopathies encompass a diverse array of disorders impacting the heart’s structure and function. Mutations in genes coding for sarcomeric proteins are linked to various abnormalities that lead to contractile dysfunction and contribute to disease progression. Dilated cardiomyopathy, which can be genetic or acquired, usually manifests with typical heart failure symptoms and reduced ejection fraction. In contrast, restrictive cardiomyopathy is rarer and frequently connected to systemic diseases. Hypertrophic cardiomyopathy can cause exertional dyspnea, atypical chest pain, heart failure, and
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Conference papers on the topic "Right ventricular systolic time interval"

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Mann, Aysha J., Bahram Kakavand, Peshala Thibbotuwawa Gamage, and Amirtahà Taebi. "Effect of Measurement Location on Cardiac Time Intervals Estimated by Seismocardiography." In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-112702.

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Abstract Cardiac time intervals (CTIs) are important parameters for assessing cardiac function and can be measured using non-invasive methods such as electrocardiography (ECG) and seismo-cardiography (SCG). It is widely accepted that SCG signals, when measured from various locations on the chest surface, exhibit distinct temporal and spectral characteristics. In that regard, the goal of this study was to determine the effect of the SCG measurement location on estimating SCG-based CTIs. For this purpose, ECG, SCG,and phonocardiography (PCG) signals wereacquired from fourteen healthy adult subje
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