Third degree AV block historical perspective

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Soroush Seifirad, M.D.[2] Aditya Ganti M.B.B.S. [3] Qasim Khurshid, M.B.B.S [4]

Overview

In 1894, Dr. Engelman was the first to describe in detail the phenomenon of AV interval lengthening. In 1899, Karel Frederik published a paper on irregular pulses describing impairment of AV conduction and blockage. 1906 Einthiven was the first to present a presentation of normal and abnormal electrocardiograms recorded with string galvanometer. Dr. Ashmar in 1925 studied and described in detail this blocked impulses and their impact on the conduction in the muscle of the heart. In 1952 Dr. Paul Zoll developed first temporary transcutaneous pacing.

Historical Perspective

In 1895, Willem Einthoven invented the first practical electrocardiogram.
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 1899, Karel Frederik Wenckebach published a paper “On the analysis of irregular pulses”
- Described the impairment of AV conduction leading to progressive lengthening and blockage of AV conduction in frogs.
- This was later called Wenckebach block (Mobitz type I) or Wenckebach phenomenon.
In 1906, Einthoven was the first to organize a presentation of normal and abnormal electrocardiograms recorded with help of string galvanometer
In 1925, Dr. Ashmar further studied this blocked impulses and their impact on the conduction in the muscle of the heart.
In 1930, Sanders was the first to describe infarction of the right ventricle.
In 1949, Norman Jeff Holter developed a first Holter monitor which was a 75 pound backpack that can record the ECG of the wearer and transmit the signal.

Landmark Events in the Development of Treatment Strategies

Paul Zoll in 1952: invented temporary transcutaneous cardiac pacing.
Seymour Furman in 1958: developed temporary endocardial approach
Åke Senningm and Elmqvist in 1958: developed Implantable Pacemakers.^[2]

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.
↑ van Hemel NM, van der Wall EE (2008). “8 October 1958, D Day for the implantable pacemaker”. Neth Heart J. 16 (Suppl 1): S3–4. PMC 2572009. PMID 18958267.

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Template:WikiDoc Sources

[pmid18907667-1] 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.

[pmid18958267-2] van Hemel NM, van der Wall EE (2008). “8 October 1958, D Day for the implantable pacemaker”. Neth Heart J. 16 (Suppl 1): S3–4. PMC 2572009. PMID 18958267.

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