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.