First degree AV block surgery

	First degree AV block Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Cafer Zorkun, M.D., Ph.D. [2]

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Surgery

There are some special situations in which placement of a permanent pacemaker is indicated in first degree heart blocks.
Special situations when placement of permanent pacemakers is indicated in first degree heart block are: pacemaker syndrome (loss of atrioventricular synchrony) and in some neuromuscular conditions associated with first degree heart block such as myotonic muscular dystrophy, Kearns-Sayre syndrome, Erb's dystrophy (limb-girdle), and peroneal muscular atrophy)
A dual chamber DDD pacemaker is preferred over a single chambered VVI pacemakers as it maintains physiologic AV synchrony. A dual-chamber artificial pacemaker is a type of device that typically listens for a pulse from the SA node and sends a pulse to the AV node at an appropriate interval, essentially completing the connection between the two nodes. Pacemakers in this role are usually programmed to enforce a minimum heart rate.