Mechanical ventilation, Cardioversion, Chest tube placement, Stress echocardiogram, Thoracentesis, Paracentesis, Bronch...oscopy, Transesophageal echocardiogram, Echocardiogram, Endotracheal intubation, Central venous catheterization, Pulmonary artery catheter insertion, Arterial line placement, Bronchoalveolar lavage, Hemodynamic monitoring, Temporary venous pacing, Heart failure, Shock, STEMI, Coronary artery disease, Cardiogenic shock, Ventricular arrhythmia, Heart block, Non-ST elevation myocardial infarction