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The relationship between J wave on the surface electrocardiography and ventricular fibrillation during acute

Soo-Han Kim1, Dae-Hyeok Kim1, Sang-Don Park1

  • 1Department of Internal Medicine, Inha University Hospital, Incheon, Korea.

Journal of Korean Medical Science
|May 23, 2014
PubMed

Insights

J waves on surface electrocardiography (sECG) are significantly more common in patients experiencing ventricular fibrillation (VF) during acute myocardial infarction (AMI). This finding identifies J waves as an independent predictor of VF in AMI patients.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Diagnostics

Background:

  • Ventricular fibrillation (VF) is a life-threatening arrhythmia during acute myocardial infarction (AMI).
  • Identifying predictive markers for VF during AMI is crucial for timely intervention.
  • The diagnostic significance of J waves on surface electrocardiography (sECG) in AMI-associated VF requires further investigation.

Purpose of the Study:

  • To investigate the association between J wave presence on sECG and the occurrence of VF during AMI.
  • To determine if J waves are an independent predictor of VF in patients with AMI.

Main Methods:

  • Retrospective analysis of 296 patients diagnosed with AMI.
  • sECG data were analyzed for the presence of J waves, defined as J point elevation (≥1 mm) with QRS notching or slurring in at least two leads.
  • Comparison of J wave incidence between patients with and without VF during AMI.

Main Results:

  • The incidence of J waves on sECG was significantly higher in the VF group (22 patients) compared to the non-VF group.
  • Conventional risk factors like delayed treatment and elevated creatine phosphokinase were associated with VF.
  • Multivariable logistic regression identified J waves and ST-segment elevation as independent predictors of VF during AMI.

Conclusions:

  • The presence of J waves on sECG is significantly associated with an increased risk of ventricular fibrillation during acute myocardial infarction.
  • J waves represent a potential novel risk marker for VF in the context of AMI.
  • Further prospective studies are warranted to confirm these findings and explore clinical implications.

Keywords:
Acute Myocardial InfarctionJ WaveVentricular Fibrillation

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