Final answer:
The immediate management of tension pneumothorax is needle decompression, which is an emergency procedure to relieve pressure within the chest by allowing trapped air to escape.
Step-by-step explanation:
The immediate management of tension pneumothorax involves needle decompression. This is a critical emergency procedure where a needle or cannula is inserted into the pleural space to allow trapped air to escape, relieving the pressure on the lungs and other thoracic structures. Tension pneumothorax is a life-threatening condition that can lead to decreased cardiac output and rapid deterioration.
While treating tension pneumothorax, administering oxygen may be supportive, but the definitive treatment is decompression. Administering antibiotics and pain medication may be appropriate in the context of the underlying cause or post-procedure care but are not the immediate treatments for the mechanical issue at hand.