IMR Press / RCM / Volume 22 / Issue 2 / DOI: 10.31083/j.rcm2202036
Open Access Review
Atrioventricular and intraventricular blocks in the setting of acute coronary syndromes: a narrative review
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1 Cardiology Unit, ASST Fatebenefratelli Sacco - Luigi Sacco University Hospital, 20157 Milan, Italy
2 Department of Cardiology, Saint Martin Private Hospital Center, 14000 Caen, France
3 Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, MD 21205, USA
*Correspondence: (Marco Schiavone)
These authors contributed equally.
Rev. Cardiovasc. Med. 2021, 22(2), 287–294;
Submitted: 9 May 2021 | Revised: 3 June 2021 | Accepted: 9 June 2021 | Published: 30 June 2021
Copyright: © 2021 The Author(s). Published by IMR Press.
This is an open access article under the CC BY 4.0 license (

Acute coronary syndromes (ACS) might be complicated by atrioventricular (AV) and intraventricular (IV) blocks in a significant number of cases, and often represent a diagnostic and a therapeutic challenge. These conduction disturbances are predictors of adverse prognosis, with complete AV blocks presenting the most severe outcomes, showing an increased in-hospital mortality. With the advent of emergency percutaneous coronary intervention (PCI) and the end of the thrombolysis era, the incidence of both AV and IV blocks has surely decreased, but their prognosis in this setting still remains a matter of debate. The aim of this review is to evaluate the current knowledge on AV and IV blocks in the AMI setting with or without ST segment elevation.

Atrioventricular blocks
Intraventricular blocks
Acute coronary syndrome
Acute myocardial infarction
Fig. 1.
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