TOPICS: Infections, drugs, malignancy, connective tissue disease, pericardial effusion, dyspnea, tachypnea, fatigue, lightheadedness, chest discomfort, clear lungs, beck's triad, jugular venous distension, hypotension, distant heart sounds, pulsus paradoxus, bowing of interventricular septum, asthma, copd, constrictive pericarditis, low voltage qrs, electrical alternans, water bottle shaped heart, pericardiocentesis, dobutamine
