<prompt> Which of the following is the indication for emergency thoractomy:Output of 1 L at the time of intercostal chest tube insertion200 ml of blood drained by chest tube over 3 consecutive hoursPenetrating chest traumaAll of the above  <response>: Indications for emergency thoracotomy:- 1.5 L of output at the time of chest tube insertion. 200 mlhr of blood drained by chest tube over 3 consecutive hours.Hemodynamic compromise. 