What patient position is commonly used for chest tube insertion?

• A. Supine or semi-recumbent with the arm elevated; entry at the 4th or 5th ICS in the mid-axillary line
• B. Prone with head turned
• C. Standing upright
• D. Sitting upright with back arched

Answer: (C)

Access to the pleural space for a chest tube is best achieved when the patient is on their back or slightly elevated, with the arm on the affected side raised to expose the lateral chest. The usual entry point is the fourth or fifth intercostal space along the mid-axillary line, within the triangle of safety. This position moves the scapula out of the way, stabilizes the chest wall, and provides a clear, reproducible access point for safely entering the pleural space. Standing upright or sitting upright with the back arched doesn’t give the same direct access to the lateral chest wall and can hinder exposure, control, and sterility during the procedure.