Commotio cordis discussed as potential cause to Damar Hamlin’s collapse

A rare but potentially deadly heart disruption known as commotio cordis may perhaps have despatched Buffalo Bills defensive back again Damar Hamlin into cardiac arrest seconds soon after a tough tackle during a game Monday night time from the Cincinnati Bengals.

Hamlin, 24, collapsed after he collided with a Bengals receiver through a deal with and appeared to get a strike in the head and upper body. Hamlin stood up, took a several steps and fell backward.

Professional medical staff applied CPR and an automated exterior defibrillator on Hamlin on the field for virtually 10 minutes and restored his heartbeat. He was taken by ambulance to the University of Cincinnati Health care Centre, the place he was in important situation. The game was formally postponed.

Even though it can be not selected what despatched Hamlin into cardiac arrest, commotio cordis is generally athletics-similar, brought on by a blow to the upper body wall just exterior the heart.

The impression, if sent during a short, sensitive moment in the heartbeat cycle, can cause the coronary heart to enter an arrhythmia, or irregular heartbeat, which can bring about cardiac arrest and demise.

What comes about in the course of cardiac arrest?

A 20-millisecond window

The heart’s electrical cycle is vital to comprehending when commotio cordis could materialize:

  • Right after the P wave, in which the muscle tissue of the ideal atrium agreement, forcing blood into the ventricle.
  • Before the T wave, in which the heart prepares to pump out blood.

Though devastating, commotio cordis is regarded unusual mainly because it has a slim window in the heart’s beating cycle to choose influence.

A cardiac cycle lasts about .8 seconds, or 800 milliseconds. (A millisecond is one a single-thousandth of a second.) Commotio cordis takes location within a 20- to 40-millisecond window of the cardiac cycle.

How frequent is commotio cordis?

Commotio cordis is commonly seen in athletes playing athletics working with equipment such as:

  • Baseballs
  • Hockey pucks
  • Lacrosse balls

These objects can strike gamers in the chest with adequate force to trigger an arrhythmia. Commotio cordis most normally occurs in baseball pitchers, catchers and hitters are at greatest danger.

Less than 30 circumstances are claimed just about every 12 months, according to the Countrywide Institutes of Wellness.


Supply United states Currently Community reporting and investigation Associated Push Korey Stringer Institute at the College of Connecticut


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