Reversibility of Atrioventricular Block According to Coronary Artery Disease: Results of a Retrospective Study.
10.4070/kcj.2012.42.12.816
- Author:
In Chang HWANG
1
;
Won Woo SEO
;
Il Young OH
;
Eue Keun CHOI
;
Seil OH
Author Information
1. Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea. seil@snu.ac.kr
- Publication Type:Original Article
- Keywords:
Atrioventricular block;
Coronary artery disease;
Pacemaker, atrificial
- MeSH:
Angina, Stable;
Angina, Unstable;
Atrioventricular Block;
Coronary Artery Disease;
Coronary Vessels;
Humans;
Myocardial Infarction;
Retrospective Studies
- From:Korean Circulation Journal
2012;42(12):816-822
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND AND OBJECTIVES: The causal relationship of clinically-significant atrioventricular block (AVB) and coronary artery disease (CAD) is uncertain. We investigated whether CAD is related to irreversible AVB that requires treatment with a permanent pacemaker. SUBJECTS AND METHODS: We included 188 consecutive patients with new-onset AVB considering pacemaker, who had undergone invasive or noninvasive coronary evaluation. Patients were divided into one of 2 groups: irreversible AVB who underwent implantation of permanent pacemaker {irreversible block (IB) group, n=173} or reversible AVB {reversible block (RB) group, n=15}. RESULTS: In IB group, significant CAD was observed in 44 patients (25.4%) and there were 2 (1.2%) patients with acute myocardial infarction (AMI). In RB group, 14 patients (93.3%) had CAD (p<0.001) and 13 patients (86.7%) presented with AMI (p<0.001). On the aspect of CAD type and reversibility of AVB, 13/15 (86.7%) patients of AMI, 0/2 (0%) of unstable angina, and 1/41 (2.4%) of stable angina had reversible AVB. CONCLUSION: AVB in patients with AMI is usually reversible. Therefore, permanent pacemaker implantation should be delayed in cases of AMI. AVB in patients with CAD other than AMI is usually irreversible.
