First degree AV block historical perspective: Difference between revisions
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==Overview== | ==Overview== | ||
First degree AV block was first described by Dr. Engelmann in 1984. Dr. Ashmar further studied the blocked impulses and | [[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== | ==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== | ||
Latest revision as of 04:42, 25 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 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.