<prompt> Indications for emergency thoracotomy are all of the following exceptMajor tracheobronchial injuriesCardiac tamponadePenetrating injuries to anterior chestTension Pneumothorax  <response>: Answer- D. Tension PneumothoraxEmergency thoracotomy is indicated after chest trauma in following conditions :Cardiac arrest resuscitative thoractomyMassive hemoththorax 1500 mL of blood through the chest tube acutely or 200-300 mlhr after initial drainage.Penetrating injuries of the anterior aspect of the chest with cardiac tamponade.Large open wounds of the thoracic cage.Major thoracic vascular injuries in the presence of hemodynamic instability 