First degree AV block

	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]

Synonyms and keywords: prolonged PR; PR prolongation; prolonged PR interval; long PR; PR interval lengthened; first-degree AV block; first-degree AVB; first-degree atrioventricular block