PMID: 8945055Nov 1, 1996Paper

Value of heart rate variability parameters for prediction of serious arrhythmic events in patients with malignant ventricular arrhythmias

Pacing and Clinical Electrophysiology : PACE
A FilipeckiL Giec

Abstract

Heart rate variability (HRV) assesses the electrical stability of the heart and can identify patients at risk of sudden cardiac death (SCD). The value of 10 HRV parameters from 24 hour ECG (in both time and frequency domain) to predict serious arrhythmic events (SAE) in a group of 56 patients with ventricular tachycardia and/or ventricular fibrillation of different etiologies not due to acute myocardial infarction was explored. Eighteen patients had low left ventricular ejection fractions (LVEF). During follow-up (6-46 months, mean = 24) 8 SCD and 12 recurrences of malignant ventricular arrhythmias or ICD discharges were recorded. Proportional hazard analysis (Cox model) for SAE revealed that the mean of all 5 minute standard deviation of RR intervals (SD) and the amplitude of low frequency spectrum (L) were independent risk factors of SAE (P < 0.05). The best models were: SD+EF and L+EF where predictive values were high (sensitivity approximately 60%, specificity over 95%, positive predictive value over 90% and negative predictive value approximately 80%). Event-free survival curves revealed a significantly shorter survival in patients with EF < 40%: 47% vs. 92%, SD < 43 ms; 56% vs. 92% and L < 16 ms; 56% vs. 89% (all P < 0.00...Continue Reading

References

Aug 15, 1992·The American Journal of Cardiology·C M Dougherty, R L Burr
Jan 1, 1991·Drugs·T MeinertzM Zehender

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Citations

Dec 16, 2006·Annals of Biomedical Engineering·Mathias BaumertDerek Abbott
May 27, 2008·Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association·Christopher T Chan

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