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 hea sounds are muffled .The following statements are true for this pt except -
Cardiac tamponade is likely to be present Echocardiogram should be done to rule out pericardial blood Entry wound should be sealed with occlusive dressing Emergency thoracotomy should be done