What prevents air from re-entering the pleural space when chest tubes are inserted?

A) The location of the tube insertion
B) The sutures that hold in the tube
C) A closed water-seal drainage system
D) Respiratory inspiration and expiration


Ans: C
After insertion, the chest tube is secured with a suture and tape, covered with an airtight dressing, and usually attached to a closed water-seal drainage system that prevents air from reentering the pleural space.

Nursing

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