An Investigation of Pulse Transit Time as a Non-Invasive Blood Pressure Measurement Method

The objective of this paper is to examine the Pulse Transit Method (PTT) as a non-invasive means to track Blood Pressure over a short period of time. PTT was measured as the time it takes for an ECG R-wave to propagate to the finger, where it is detected by a photoplethysmograph sensor. The PTT meth...

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Bibliographic Details
Published in:Journal of physics. Conference series 2011-01, Vol.307 (1), p.12060-5
Main Authors: McCarthy, B M, O'Flynn, B, Mathewson, A
Format: Article
Language:English
Subjects:
Blood pressure
Cuffs
Fingers
Measurement methods
Monitoring
Patients
Physics
Pressure measurement
Sensors
Time measurement
Transit
Transit time
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Summary:The objective of this paper is to examine the Pulse Transit Method (PTT) as a non-invasive means to track Blood Pressure over a short period of time. PTT was measured as the time it takes for an ECG R-wave to propagate to the finger, where it is detected by a photoplethysmograph sensor. The PTT method is ideal for continuous 24-hour Blood Pressure Measurement (BPM) since it is both cuff-less and non-invasive and therefore comfortable and unobtrusive for the patient. Other techniques, such as the oscillometric method, have shown to be accurate and reliable but require a cuff for operation, making them unsuitable for long term monitoring. Although a relatively new technique, the PTT method has shown to be able to accurately track blood pressure changes over short periods of time, after which re-calibration is necessary. The purpose of this study is to determine the accuracy of the method.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/307/1/012060