Figure 32-41 Mitral stenosis. Mean pulmonary artery wedge pressure (PAWP) is increased (35 mm Hg), and the diastolic y descent is markedly attenuated. Compare the slope of the y descent in the PAWP trace with the y descent in the central venous pressure (CVP) trace. In addition, compare this PAWP y descent with the PAWP y descent in mitral regurgitation (see Fig. 32-38 and Fig. 32-39 ). Because of atrial fibrillation, a waves are not seen in the PAWP or CVP traces. ART, arterial blood pressure. (Redrawn from Mark JB: Atlas of Cardiovascular Monitoring. New York, Churchill Livingstone, 1998, Fig. 17-19.)