Pulse Transit Time (PTT) is the time it takes the pulse pressure waveform to propagate through a length of the arterial tree. The pulse pressure waveform results from the ejection of blood from the left ventricle and moves with a velocity much greater than the forward movement of the blood itself.
With increased vessel wall stiffness (decreased compliance), DELTA V decreases and pulse wave velocity increases. With increased blood pressure, the arterial walls are more strongly stretched and pulse wave velocity increases. Accordingly, for a fixed vessel distance, as the pulse transit time increases the blood pressure decreases.
In this application note, pulse transit time will be measured between the R-wave and the peak of the pressure wave at the finger, as measured by the pulse plethysmograph.
The Dual Wireless Respiration and ECG BioNomadix module pair consists of a matched transmitter and receiver pair optimized for respiration and electrocardiogram data; record one or both signals. RSP (CH A)–measure abdominal or thoracic expansion and contraction while breathing ECG (CH B)–record electrical activity generated by the heart The high signal to noise ratio and […]
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