Rhythm strip showing sick sinus syndrome. The initial part of the tracing reveals coarse fibrillation with a slow ventricular response in the absence of drugs that impair AV nodal conduction. The atrial fibrillation breaks and is followed by a sinus escape beat with a long escape inverval of nearly four seconds and then another escape beat at a similar interval (not shown).
Courtesy of Ary Goldberger, MD.
Graphic 82608 Version 3.0
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