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Contrast-induced early repolarization pattern and ventricular fibrillation

Ourania Kariki1, Marianna Kontonika1, Dimitrios Miliopoulos1

  • 1Department of Cardiology Onassis Cardiac Surgery Center Athens Greece.

Clinical Case Reports
|August 25, 2021
PubMed

Insights

Malignant arrhythmias are a risk during coronary angiography. Intracoronary contrast can lower the ventricular fibrillation threshold, increasing arrhythmia risk.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Cardiac Electrophysiology

Background:

  • Coronary angiography is a common procedure for diagnosing coronary artery disease.
  • Malignant arrhythmias, such as ventricular fibrillation, are a potential complication.
  • Understanding the mechanisms behind these arrhythmias is crucial for patient safety.

Observation:

  • Intracoronary infusion of contrast medium during angiography can induce significant physiological changes.
  • These changes can affect myocardial electrical stability.

Findings:

  • Contrast medium administration can lower the ventricular fibrillation threshold.
  • This physiological alteration increases susceptibility to malignant arrhythmias.

Implications:

  • Clinicians must be aware of this risk when performing coronary angiography.
  • Strategies to mitigate contrast-induced arrhythmia risk should be considered.
  • Enhanced patient monitoring during and after contrast administration may be warranted.

Keywords:
J wavescontrast mediumcoronary angiographyventricular fibrillation

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