Results 201 to 210 of about 15,545,791 (242)
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A System for Monitoring the Radial Pulse: Application to Pulse Transit Time Measurement
Psychophysiology, 1984ABSTRACTA transducer and circuit for continuous monitoring of the radial pulse are described. The wrist transducer is small, robust and easily constructed. The system responds mechanically to surface movement caused by the arterial pulse, and converts the motion photoelectrically to a signal suitable for AC amplification and input to a chart recorder ...
L J, Aylesbury, G V, Marie
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Pulse wave transit time for monitoring respiration rate
Medical & Biological Engineering & Computing, 2006In this study, we investigate the beat-to-beat respiratory fluctuations in pulse wave transit time (PTT) and its subcomponents, the cardiac pre-ejection period (PEP) and the vessel transit time (VTT) in ten healthy subjects. The three transit times were found to fluctuate in pace with respiration.
A. Johansson +3 more
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Local Pulse Transit Time Analysis
2025 17th International Conference on Human System Interaction (HSI)The paper presents preliminary analyses of pulse transit time (PTT) derived from photoplethysmography (PPG) measurements taken at the elbow, wrist, and finger. Data were collected from ten participants under the approval of a bioethics committee. The study examined the correlation coefficients of PTT between these locations using four fiducial points ...
Artur Polinski +4 more
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Transit time broadening: a pulsed doppler ultrasound perspective
IEEE Ultrasonics Symposium, 2004, 2005Many studies on transit time broadening have been performed to characterize its effect on the Doppler spectrum. However, the dependence of transit time broadening on an important pulsed Doppler ultrasound parameter - the range gate used for depth localization - has not been rigorously addressed.
Lui, EYL +3 more
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A system to measure pulse transit time
2022This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
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An Attempt to Define the Pulse Transit Time
2018Pulse transit time (PTT) is promising for various clinical applications. This paper attempts to discuss different terminologies used for PTT and reveals the research discontinuity among different groups, with the aim to describe the definition of PTT and propose solutions to clarify the usage of PTT.
Ding, Xiao-Rong +5 more
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The Effect of Local Cold Exposure on Pulse Transit Time
2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005Pulse transit time (PTT) has attracted great interest for developing continuous and noninvasive blood pressure (BP) monitoring devices. This study investigated the effect of finger cold exposure on PTT. 13 healthy and normotensive subjects, including 6 males and 7 females took part in the experiment.
Xin-Yu, Zhang, Yuan-Ting, Zhang
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Pulse Transit Time as a Measure of Inspiratory Effort in Children
Chest, 2003The current criterion standard for measuring inspiratory effort, esophageal manometry, is an invasive procedure that young patients find intolerable. Inspiratory effort can also be assessed noninvasively by measuring the pulse transit time (PTT). PTT is the time the pulse wave (PW) takes to travel between two arterial sites (normally heart to finger ...
PAGANI J +6 more
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Perturbationless calibration of pulse transit time to blood pressure
2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2012Pulse transit time (PTT) often shows strong correlation with blood pressure (BP) and may therefore represent a means for achieving continuous, non-invasive, and cuff-less BP monitoring. However, construction of the subject-specific curve needed to calibrate PTT to BP conventionally requires simultaneous measurements of PTT and BP during an experimental
Mingwu Gao, Ramakrishna Mukkamala
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Pulmonary transit time has close relation with pulmonary pulse wave transit time in normal subjects
Clinical Physiology and Functional Imaging, 2022AbstractBackgroundPulmonary transit time (PTT) and pulmonary pulse wave transit time (pPTT) are useful parameters for the evaluation of cardiopulmonary circulation and vascular alterations, but their relationship remains unknown. The aim of this study was to investigate the correlation between PTT and pPTT.MethodsA total of 60 healthy volunteers were ...
Jun Zhang, Xiao‐Zhi Zheng, Xu‐Chu Wu
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