I vote for Wenckebach - Jane Posted: Nov 7th, 2009 - 1:47 am In Reply to: Need help with cardiology term (please?) - blbarb
Wenckebach
First-degree AV block is characterized by PR interval prolongation (more than 200 msec or 5 small boxes) and is generally a benign finding. Figure 12-3 depicts a rhythm strip with first-degree heart block. Second-degree heart block is divided into type I (Wenckebach) and type II. Type I second-degree AV block (Wenckebach) is caused by a conduction disturbance within the AV node. It is characterized by the progressive lengthening of the PR interval until the impulse is not conduct- ed, resulting in a dropped QRS complex (Figure 12-4). A resetting of the original PR interval follows each dropped beat. Similar to first-degree AV block, type I second-degree AV block is infrequently clinically significant, except that it may eventually progress to type II second-degree or to third-degree heart block.
Mobitz type I block: a second degree atrioventricular block in which the P-R interval increases progressively until an atrial impulse is blocked.
Called also Wenckebach phenomenon or block.
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