Figure 32-38 Mitral regurgitation. A tall regurgitant v wave (v) is seen in the pulmonary artery wedge pressure (PAWP) trace and may also be noted in the unwedged pulmonary artery pressure (PAP) waveform (arrow). (Redrawn from Mark JB: Atlas of Cardiovascular Monitoring. New York, Churchill Livingstone, 1998, Fig. 17-5.)