First degree AV block historical perspective
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmed Elsaiey, MBBCH [2]
Overview
First-degree AV block was first described by Dr. Engelmann in 1984. Dr. Ashmar further studied the blocked impulses and their impact on the conduction in the myocardium.
Historical perspective
- In 1894, Dr. Engelmann described a phenomenon of AV interval lengthening. Dr. Engelmann described a stimulus that is applied to the atrium followed by elongation of the AV interval.[1]
- In 1925, Dr. Ashmar further studied these blocked impulses and their impact on the conduction in the muscle of the heart.
- Dr. Ashmar stated the early blocked beats that follow normal impulses have less effect on the conduction system.
References
- ↑ LANGENDORF R (1948). "Concealed A-V conduction; the effect of blocked impulses on the formation and conduction of subsequent impulses". Am Heart J. 35 (4): 542–52. doi:10.1016/0002-8703(48)90641-3. PMID 18907667.