Arterial Stiffness and Hemodynamics in Cardiac Surgery

The delay time was determined as the time difference between the onset of the Doppler waveform and the R-wave on the electrocardiogram(ECG) of the USG device. The distance between the carotid and femoral arteries, where imaging was performed, was then measured. This distance was divided by the delay time to calculate the carotid-femoral pulse wave velocity(PWV) in meters per second, which was considered a measure of arterial stiffness.