A 40 year old male brought to the emergency room with a stab injury to the chest.On examination pt is found to be hemodynamically stable. The neck veins are engorged and the heart sounds are muffled .The following statements are true for this pt except -
Cardiac tamponade is likely to be present.
Immediate emergency room thoracotomy should be done.
Echocardiogram should be done to confirm pericardial blood.
The entry wound should be sealed with an occlusive dressing.