Question

how can I calculate the speed at which the blood pressure wave travels? using the data below

VR SU Part 1: The ECG and Pulse Distance between the subject's shoulder and mid-sternum: 2 c m Distance between the subject's shoulder and finger tip: 6.9 t cm Total Distance: 91 cm Time between the peak of the Rwave and Pulse peak: When subject was sitting with hands at room temperature: 10 secs .0 Ave. pulse amplitude before subject placed hand in water Standard deviation m V -03 - Ave. pulse amplitude after subject place hand in water Standard deviation 01 mV 0.03

Answer 1

PWV can be collected by using two pressure catheters placed a known distance from one another, referred to as the Pulse Wave Distance. The time it takes the pressure wave to go from the upstream pressure catheter to the downstream pressure catheter provides the Pulse Transit Time (PTT). PWV can then be calculated by dividing the distance by the transit time providing a measure of cardiovascular health.

Distance = Speed × Time

Speed = Distance / Time

Distance given is 91cm is equal to 0.00091km

Time is 10secs is equal to 0.167min

Speed = 91/10 or 0.00091/0.167

= 9.1cm/sec or 0.0054km/min