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REVIEW ARTICLE
Year : 2022  |  Volume : 9  |  Issue : 1  |  Page : 103-111

Pulse arrival time: Measurement and clinical applications


1 Department of Biomedical Engineering, MGM’s College of Engineering & Technology, Navi Mumbai, India
2 Department of Biomedical Engineering, Vidyalankar Institute of Technology, Mumbai, Maharashtra, India

Correspondence Address:
Dr. Ghanshyam D Jindal
Department of Biomedical Engineering, MGM’s College of Engineering & Technology, Kamothe, Navi Mumbai 410209, Maharashtra.
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/mgmj.mgmj_23_22

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Pulse arrival time is the time elapsed between the R-wave of electrocardiogram and systolic peak in peripheral pulse obtained by any of the plethysmographic methods. Similarly, differential pulse arrival time, also known as pulse transit time, is the time elapsed between systolic peaks of proximal and distal peripheral pulse recordings in an extremity. Distance between the proximal and distal site in the extremity (in meters) divided by differential pulse arrival time (in seconds) gives arterial pulse wave velocity in the limb segment. Differential pulse arrival time has been used to discriminate between an aortic or arterial block from generalized atherosclerosis in aortic and arterial occlusive diseases for nearly four decades. All along there have been efforts to monitor beat-to-beat blood pressure with the help of these time intervals and other pulse parameters. Encouraging correlation has been observed with that obtained by Finapres. Recently pulse arrival time has been explored for the prompt detection of sudden hypertensive episodes during laryngeal microsurgery, for detection of mental stress, monitoring of baroreflex sensitivity, and real-time monitoring of blood pressure. This paper briefly describes the measurement technique of pulse arrival time and an overview of its clinical applications.


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