You Have Just Inserted a Large-Bore Catheter into the Chest

Multiple Choice

You have just inserted a large-bore catheter into the chest of a patient with a tension pneumothorax and received a return of air. Which of the following should NOT be done?

A) Insert a second, or even a third, catheter if the patient is symptomatic, despite the release of air.
B) Leave the catheter in place, and create a flutter valve.
C) Leave the catheter in place and open to air.
D) Remove the catheter.