Cardiology

Time essential when treating cardiac arrest in athletes

For minutes that seemed to drag on endlessly on Jan. 2, tens of thousands of NFL fans at Paycor Stadium in Cincinnati and millions more watching on television around the globe held their collective breath. After falling to ...

Cardiology

Cardiac arrest in a 14-year-old at overnight camp

A case of a 14-year-old girl who had a cardiac arrest at an overnight camp provides a roadmap of how to plan for a rare but often fatal event. The practice article is published in CMAJ (Canadian Medical Association Journal).

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Defibrillation

Defibrillation is a common treatment for life-threatening cardiac arrhythmias, ventricular fibrillation and pulseless ventricular tachycardia. Defibrillation consists of delivering a therapeutic dose of electrical energy to the affected heart with a device called a defibrillator. This depolarizes a critical mass of the heart muscle, terminates the arrhythmia, and allows normal sinus rhythm to be reestablished by the body's natural pacemaker, in the sinoatrial node of the heart. Defibrillators can be external, transvenous, or implanted, depending on the type of device used or needed. Some external units, known as automated external defibrillators (AEDs), automate the diagnosis of treatable rhythms, meaning that lay responders or bystanders are able to use them successfully with little, or in some cases no training at all.

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