Resolution of complete heart block after revascularization of acute marginal branch of the right coronary artery

A patient presented with typical angina and a non-ST elevation myocardial infarction. Electrocardiogram showed complete heart block, and she was found to have a 90% acute marginal artery stenosis. The block resolved after balloon angioplasty of this artery that does not supply the atrioventricular n...

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Veröffentlicht in:	Türk Kardiyoloji Derneği arşivi 2014-10, Vol.42 (7), p.667-670
Hauptverfasser:	Bolorunduro, Oluwaseyi, Khouzam, Rami N, Dishmon, Dwight
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Angina Pectoris - etiology angioplasty Angioplasty, Balloon Arterial Occlusive Diseases - complications Arterial Occlusive Diseases - diagnosis Arterial Occlusive Diseases - diagnostic imaging Arterial Occlusive Diseases - therapy atrioventricular block coronary Coronary Angiography Coronary Vessels Diagnosis, Differential Dyspnea - etiology Electrocardiography Female Heart Block - complications Heart Block - diagnosis Heart Block - diagnostic imaging Heart Block - therapy Humans Pacemaker, Artificial stenoses
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Zusammenfassung:	A patient presented with typical angina and a non-ST elevation myocardial infarction. Electrocardiogram showed complete heart block, and she was found to have a 90% acute marginal artery stenosis. The block resolved after balloon angioplasty of this artery that does not supply the atrioventricular node. We propose that increased vagal tone due to inferior wall ischemia from acute marginal artery stenosis has elicited the Bezold-Jarisch reflex. This is a likely mechanism for this uncommon etiology of complete heart block.
ISSN:	1016-5169 1016-5169
DOI:	10.5543/tkda.2014.91074