Non-specific intraventricular conduction delay or atypical LBBB - How to predict acute coronary occlusion?

Kjell Nikus, Essi Ryödi, Andrés Ricardo Pérez-Riera, Jani Rankinen

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Abstract

We describe two patient cases with acute coronary syndrome (ACS) and broad QRS in the acute phase electrocardiogram (ECG). The patients' ECG findings resembled left bundle branch block (LBBB), but with atypical features. Broad QRS not fulfilling the criteria for LBBB or right bundle branch block (RBBB) is diagnosed as non-specific intraventricular conduction delay (NSIVCD). The case report deals with the challenges of predicting acute coronary occlusion in patients with NSIVCD in their acute phase ECG. In one of the cases, the ECG changed from typical LBBB to NSIVCD or atypical LBBB with the development of systolic dysfunction and clinical heart failure.

Original languageEnglish
Pages (from-to)66-69
JournalJournal of Electrocardiology
Volume75
Early online date2022
DOIs
Publication statusPublished - 2022
Publication typeA1 Journal article-refereed

Keywords

  • Acute coronary syndrome
  • Broad QRS
  • Bundle branch block
  • Myocardial infarction
  • Non-specific intra-ventricular conduction delay

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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