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Written by the OrganizedWisdom Team with as the reviewer. All original content is supervised by the The OrganizedWisdom Medical Review Team
emedicine.com
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Overview: Second-degree heart block, or second-degree atrioventricular (AV) block, refers to a disorder of the cardiac conduction system in which some atrial impulses are not conducted to the ventricles. Electrocardiographically, some P waves are not followed by ...
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