ECG of the century: A most unusual 1st degree AV block

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Title ECG of the century: A most unusual 1st degree AV block
Creator Yanowitz, Frank G.
Contributor Frank G. Yanowitz, MD, Professor of Cardiology, University of Utah School of Medicine
Date 1997-01-01
Description On Day 1, at a heart rate of 103 bpm the P waves are not clearly defined suggesting an accelerated junctional rhythm. However, on Day 2, at a slightly slower heart rate the sinus P wave suddenly appears immediately after the QRS complex. In retrospect, the sinus P wave in Day 1 was found burried in the preceding QRS; note the notch on the downstroke of the QRS. On Day 3 a normal PR interval was seen. How long can the PR interval get in 1st degree AV block??? No one knows.
Subtype Image
Format image/png
Rights http://creativecommons.org/licenses/by-nc-sa/1.0/
Collection Knowledge Weavers ECG
ARK ark:/87278/s60w1cmg
Setname ehsl_heal
ID 870232
Reference URL https://collections.lib.utah.edu/ark:/87278/s60w1cmg
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