Consider therapeutic hypothermia cooling protocol for patients with documented cardiac arrest felt to be caused by lethal cardiac rhythm (e.g. ventricular fibrillation)
Patients with cardiac arrest and ST elevation at any point, even if resolved, should still under go emergent coronary angiography
Failed reperfusion: consider if repeat ECG 90 minutes after infusion fails to show reduction of elevated ST segments by 50%
Recurrent significant ST elevation following successful lysis
Persistent hemodynamically unstable arrythmias, persistent ischemic symptoms, or worsened cardiogenic shock
Even in those with successful reperfusion, its reasonable to do angiography within the index hospitalization, even within hours of thrombolytic therapy
Cath site hematoma
Heart failure or cardiogenic shock
Hemodynamic support, consider norepinephrine or dobutamine
Mechanical support e.g. balloon pump or Impella, usually placed in cath lab
Ventricular tachycardia or ventricular fibrillation --> if sustained and > 48 hours after<unk>  may need ICD
Pericarditis, < 1 week from<unk>  --> treat with high dose aspirin, avoid NSAIDs
Bradycardia, if AV nodal involvement, rarely responds to atropine, likely will require pacing
Free wall or ventricular septal rupture
Dressler's syndrome, > 1 week post MI
Hemodynamic support, consider norepinephrine or dobutamine
Mechanical support e.g. balloon pump or Impella, usually placed in cath lab
ST-segment elevation myocardial infarction
Cardiac
Non-ST-elevation myocardial infarction
ST-segment elevation myocardial infarction 
Unstable angina
Post-MI 
Acute coronary syndrome 
Previous MI with recurrent ischemia in same area