Dip and plateau in constrictive pericarditis

Hemodynamic record of a patient with surgically proven constrictive pericarditis.
(A) Slow-paper-speed recording of high-gain left ventricular (LV) pressure and simultaneous right heart pullback from pulmonary capillary wedge (PCW) to pulmonary artery (PA), right ventricle (RV), and right atrium (RA).
(B) Fast-paper-speed recording of LV and simultaneous RV and RA pressure tracings. Note the increased and equal atrial and diastolic pressures, the prominent X and Y descents on the RA tracing, and the dip and plateau on the RV and LV tracings during longer diastoles.