Potential complications of selected vagal maneuvers

Vagal maneuver	Potential complication
Valsalva maneuver	Rupture of the round window of the ear
Carotid sinus massage	Decreased cerebral perfusion, cerebral embolism
Ice-water immersion	Aspiration, drowning, pregnancy complications
Eyeball compression	Ocular injury

Courtesy of Peter J Zimetbaum, MD and Daniel Frisch, MD.

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