First degree AV block historical perspective: Difference between revisions
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==Historical perspective== | ==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.<ref name="pmid18907667">{{cite journal| author=LANGENDORF R| title=Concealed A-V conduction; the effect of blocked impulses on the formation and conduction of subsequent impulses. | journal=Am Heart J | year= 1948 | volume= 35 | issue= 4 | pages= 542-52 | pmid=18907667 | doi=10.1016/0002-8703(48)90641-3 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18907667 }}</ref> | * 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]].<ref name="pmid18907667">{{cite journal| author=LANGENDORF R| title=Concealed A-V conduction; the effect of blocked impulses on the formation and conduction of subsequent impulses. | journal=Am Heart J | year= 1948 | volume= 35 | issue= 4 | pages= 542-52 | pmid=18907667 | doi=10.1016/0002-8703(48)90641-3 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18907667 }}</ref> | ||
* In 1925, Dr. Ashmar further studied | * 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 | * Dr. Ashmar stated the early blocked [[beats]] that follow normal [[impulses]] have less effect on the [[conduction system]]. | ||
==References== | ==References== | ||
Revision as of 05:38, 22 July 2021
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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 its 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.