No contraindications in patient who is hemodynamically unstable due to tamponade
Traumatic tamponade (perform ED thoracotomy instead)
Myocardial rupture
Aortic dissection
Bleeding diathesis
Pericardiocentesis
Thoracotomy 
Thoracotomy
Thoracentesis
Thoracic lavage
Vasopressors
Transvenous pacing
Needle cricothyrotomy