<unk>  is the<unk> itive treatment for the life-threatening cardiac arrhythmias ventricular fibrillation and pulseless ventricular tachycardia.<unk>  consists of delivering a therapeutic dose of electrical energy to the affected heart with a device called a<unk> rillator. 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.<unk> rillators can be external, transvenous, or implanted, depending on the type of device used. Some external units, known as automated external<unk> rillators (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.
Defibrillation
Transcutaneous pacing
AVNRT cardioversion
Transvenous pacing
Lopressor injection
Atrial fibrillation cardioversion
Lopressor IV
Wolff-Parkinson-White syndrome cardioversion