Symptoms of acute (but not chronic) pericarditis also include:
Constrictive pericarditis is notoriously difficult to diagnose and must be distinguished from restrictive cardiomyopathy and cardiac tamponade .
The examination of the neck veins may show that the jugular venous pressure is elevated. Neck veins may be prominent and may not decrease when inhaling (related to increased pressure in the veins). This is called Kussmaul's sign and is caused by lack of transmission of intrathoracic respiratory changes to the pericardial space and heart chambers.
Heart sounds may be weak or distant. There may be signs of hepatic (liver) congestion, such as enlargement of the liver and fluid in the abdomen ( ascites ). The spleen may be examined by touch. Pericardial thickening, scarring, or calcification (mineral deposits) can be verified by the results of the following tests:
Both echo-Doppler and cardiac catheterization may clearly show that during inhalation, the venous blood flow into the right atrium does not increase as it would normally.
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