8 doctors weighed in:

What purpose is dc shock for cardioversion?

8 doctors weighed in
Dr. Samuel Hahn
Internal Medicine - Cardiology
4 doctors agree

In brief: Reset button

Enough current applied through the chest wall and into the heart will basically depolarize all of the heart muscle at once.
As the heart electrically recovers, "normal" electrical activity has a chance to return - basically it resets the electrical activity of the heart.

In brief: Reset button

Enough current applied through the chest wall and into the heart will basically depolarize all of the heart muscle at once.
As the heart electrically recovers, "normal" electrical activity has a chance to return - basically it resets the electrical activity of the heart.
Dr. Samuel Hahn
Dr. Samuel Hahn
Thank
Dr. Calvin Weisberger
Internal Medicine - Cardiology
2 doctors agree

In brief: Cardioversion

Direct current cardioversion is to send a unidirectional current through the chest/heart to depolarize the heart and let normal rhyhthm resume.

In brief: Cardioversion

Direct current cardioversion is to send a unidirectional current through the chest/heart to depolarize the heart and let normal rhyhthm resume.
Dr. Calvin Weisberger
Dr. Calvin Weisberger
Thank
1 comment
Dr. Saptarshi Bandyopadhyay
DC cardioversion is used, to my understanding, for ventricular fibrillation & (unstable) ventricular tachycardia. It stops these abnormal & dangerous rhythms, by depolarizing heart muscle cells, allowing a normal rhythm to hopefully take hold.
Read more answers from doctors