Case Reports of Phase 4 Paroxysmal Atrioventricular Block

Yan He-Chang; Zuang Ya-Chun
August 1981
Angiology;Aug1981, Vol. 32 Issue 8, p581
Academic Journal
This article focuses on the case reports of phase 4 paroxysmal atrioventricular block. Rate-dependent conduction disturbances may be responsible for atrioventricular (AV) block and called paroxysmal AV block. The purpose of this article is to illustrate some cases concerned with this specific form of AV block, which developed spontaneously rather through provocation during the slowing of the heart rate. Case 1, a 24-year-old male patient with a history of myocarditis, was followed for 3 years with stabilized ECG abnormalities. He was at that time physically fit. However, at times, intensity of heart sounds varied with an apparent arrhythmia. Case 2 was a 66-year-old male patient suffering from coronary artery disease but with neither angina nor infarction.


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