Pericarditis in malignancy cardiac catheterization

• Cardiac tamponade: There is equalization of pressures in all four chambers of the heart. The right atrial pressure equals the right ventricular end diastolic pressure, which is also equal to the pulmonary artery diastolic pressure.
• Constrictive pericarditis: Equalization of elevated right atrial and pulmonary artery wedge pressures may be noted with a diastolic dip and plateau in the right ventricular tracing.
• Effusive constrictive pericarditis: Cardiac tamponade findings are noted initially. Findings of constrictive pericarditis are unmasked following pericardiocentesis.

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