Predicting postinfarction left ventricular dysfunction based on the configuration of the QRS Complex and ST segment in the initial ECG of patients with a first anterior wall myocardial infarction?

David Hasdai, Avital Porter, Yochai Birnbaum, Jacob Strahilevitz, Samuel Sclarovsky*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The objective of the study was to identify patients with anterior wall acute myocardial infarction (AMI) at high risk of postinfarction left ventricular dysfunction (LVD). This study population included all patients admitted with a diagnosis of anterior wall AMI (ST segment elevation of >1 mm in 2 or more precordial leads) without history or ECG evidence of antecedent AMI, who underwent assessment of left ventricular ejection fraction (LVEF) during emergency hospitalization. ST segment deviation from baseline was measured manually 0.08 s after the J point in all leads. Patients (n = 81) were classified into two groups based on the configuration of the QRS complex and ST segment: ST >1 mm with preserved (pattern A; n = 60) or distorted terminal QRS (emergence of the J point at a level above the lower half of the R wave or disappearance of the S wave in leads with an Rs configuration; pattern B; n = 21). LVD (LVEF< 40%) was significantly more prevalent in patients with pattern B than pattern A (48 vs. 12%; p = 0.002). There was no correlation between the number of leads with ST segment elevation and LVD (p = 0.47). The sum of ST segment elevation in involved leads correlated weakly, yet significantly with LVEF (R = -0.22; p< 0.05). In conclusion, patients with anterior wall AMI and pattern B in the initial ECG are at high risk of post-AMI LVD.

Original languageAmerican English
Pages (from-to)125-128
Number of pages4
JournalCardiology
Volume87
Issue number2
DOIs
StatePublished - 1 Jan 1996
Externally publishedYes

Keywords

  • Acute myocardial infarction
  • Anterior wall
  • Ejection fraction
  • Electrocardiogram
  • Left ventricular dysfunction
  • QRS complex
  • ST segment

Fingerprint

Dive into the research topics of 'Predicting postinfarction left ventricular dysfunction based on the configuration of the QRS Complex and ST segment in the initial ECG of patients with a first anterior wall myocardial infarction?'. Together they form a unique fingerprint.

Cite this