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Rhythms for Synchronized Cardioversion

During Synchronized Cardioversion, we deliver an electrical shock to the heart. The shock is timed to coincide with the peak of the R wave. By synchronizing the shock with the R wave, the provider can deliver the shock at the optimal moment to restore a normal heart rhythm.

Synchronized Cardioversion may be performed as an emergency or a scheduled procedure depending on the patient's condition and the underlying cause of the arrhythmia.

Before the procedure, always consider pain relief and sedation. After cardioversion, the patient must be monitored closely for instability or reoccurrence.

Rhythms for Cardioversion:

-Supraventricular Tachycardia (SVT)

-Ventricular Tachycardia (VT) with a Pulse

-Atrial Flutter

-Atrial Fibrillation (AF)

Energy Selection: AHA Guidelines recommend following the recommendation from the manufacturer:

*100J; 150J; 200J (Philips Smart Biphasic)

*75J; 120J; 150; 200J (Zoll Biphasic)

*10OJ; 200J; 300J (Stryker/ LifePak 15)

*100J; 200J; 300; 360J (Monophasic)

SVT & Atrial Flutter might respond to lower joule settings: 50J

Disclaimer: This post is for educational purposes and is not intended as medical advice. While we strive for 100% accuracy, errors may occur, and medications or protocols may change over time.


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