Cardiac tamponade is compression of the chambers of the heart and impedance of venous return leading to decreased cardiac output.
Does this patient have an exudative pleural effusion? The Rational Clinical Examination systematic review. Wilcox ME, Chong CA, Stanbrook MB, Tricco AC, Wong C, Straus SE. JAMA. 2014 Jun 18;311(23):2422-31. doi: 10.1001/jama.2014.5552. “The diagnosis of an exudate was most accurate if cholesterol in the pleural fluid was greater than 55 mg/dL (LR range, 7.1-250), lactate […]