Figure 200e
Simultaneous high-fidelity left and right
ventricular pressures are
recorded with the base phonocardiogram in a 35 year old chronic drug
abuser with severe pulmonary hypertension. Wide, fixed splitting of
S2 is recorded and the intensity of P2 is greater than that of A2. Significant
prolongation of right ventricular systole is responsible for the delay
in P2, due primarily to prolongation of the right ventricular isovolumic
contraction time.