Figure 32-50 Relationship between left atrial pressure (LAP) and left ventricular end-diastolic pressure (LVEDP) in aortic stenosis and mitral regurgitation. LVEDP is elevated in both conditions (25 mm Hg), but mean LAP (Ā) remains low in aortic stenosis (15 mm Hg) but high in mitral regurgitation (30 mm Hg) because of the regurgitant c-v wave inscribed during systole. LVP, left ventricular pressure. (Redrawn from Mark JB: Atlas of Cardiovascular Monitoring. New York, Churchill Livingstone, 1998, Fig. 6-2).