Q. Describe Ventricular and Great Vessel Pressures?

Ventricular Pressure

RV and LV waveforms are similar in morphology but different in magnitude. The duration of systole and isovolumic contraction and relaxation are longer and the ejection period shorter in the LV than in the RV. End diastolic pressure in generally measured at the "C" point which is the rise in ventricular pressure at the onset of isovolumic contraction.

Great Vessel Pressures

The contour of the central aortic pressure and PA pressure tracing consists of a systolic wave, the incisura (indicative of closure of the semilunar valves) and a gradual decline in pressure until the following systole. The pulse pressure reflects the volume and compliance of the arterial system. The mean aortic pressure more accurately reflects the peripheral resistance.