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A punch or blow to the center of the sternum with the fist or a mechanical device.

chest thump

Precordial thump.

precordial thump

A forceful punch delivered to a patient’s sternum in an attempt to terminate a lethal cardiac rhythm, such as ventricular fibrillation or ventricular tachycardia.


This procedure is not routinely used. The critical time it consumes during resuscitation may be better used by starting chest compressions and assigning a second rescuer to obtain an automated external defibrillator.
Synonym: chest thump
References in periodicals archive ?
At the entrance, a ragged archway tall as the big man I now am, a little dirt was falling like rain and inside, just before the ceiling itself let go and crashed down with a hollow and furious whump, Mickey Alan Crawford had begun slowly sitting up to face us, his watery blue eyes not yet going from amusement to horror, his freckly arms not yet rising to cover his head.
Thump, bump, whump - the sounds of dodge balls connecting.
Half an hour ago you watched him whump enough milk to keep Cleopatra in baths for a month.
22-250, you can whump up a handload for the E-rifle using the same brass you're now using; load the same powder, charge weights and bullet; and get the same velocities and pressures you'd get in your rifle.
Meyerson Symphony Center, Dallas, Texas, Andrew Litton's forces come off sounding dull and bass-heavy, with occasional odd vibrations and whumps from who knows where.