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Medicine

Endotracheal Tube Cuff Pressure Management to Prevent Injury

Quick fact

Tracheal capillary pressure is about 30 cm H₂O. Cuff pressures above this can obstruct blood flow, leading to ischemia within 15 minutes and permanent damage in hours.

Why this is interesting

Imagine a balloon inflated inside your windpipe. If it's too tight, it can cut off blood flow—but if it's too loose, air leaks out. How do doctors balance this?