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[Prognostic evaluation with invasive technics in patients with hyperkinetic ventricular arrhythmias]
Giornale Italiano Di Cardiologia
|January 1, 1983
Summary
Inducible ventricular tachycardia (VT) during programmed electrical stimulation (PES) predicts sudden cardiac death risk. This electrical instability is a key marker, even when independent of heart dysfunction or coronary artery disease extent.
Area of Science:
- Cardiology
- Electrophysiology
- Clinical Medicine
Context:
- Assessing prognostic value of programmed electrical stimulation (PES) in patients with and without spontaneous recurrent ventricular tachycardia (VT).
- Evaluating the relationship between inducible VT, ventricular dysfunction, and coronary artery disease (CAD).
Purpose:
- To determine the prognostic significance of inducible VT via PES in identifying patients at risk for sudden cardiac death.
- To correlate electrical instability with ventricular dysfunction and CAD extent in patients experiencing spontaneous VT.
Summary:
- PES induced VT in 77% of patients with spontaneous VT and 90% of controls.
- Inducible VT was associated with ventricular dysfunction (ejection fraction ≤40%) and significant CAD.
- In patients with spontaneous VT, mortality correlated with recent myocardial infarction, inducible VT, low ejection fraction, and severe CAD.
Impact:
- Inducible VT identified through PES serves as a significant marker for sudden cardiac death risk.
- Electrical instability can occur independently of cardiac pathology, but these factors influence overall mortality in VT patients.