4/4/2023 0 Comments Anchor electrical logoThis study aimed to explore the circulational heat-dissipating ability, and to investigate the contribution of blood circulation to the heat-absorbing ability of upper airway.ġ8 adult, male Beagle dogs were divided into three groups to inhale thermal dry air of 70–80 ☌, 150–160 ☌ or 310–320 ☌ for 20 min. The upper airway has powerful heat-absorbing ability, in which the blood circulation may play an important role. We advocate returning to single coil RV ICD leads as the standard of care to decrease chronic lead complications. In the SCD-HeFT, the addition of an SVC coil for left-sided implants was not associated with improved outcome measures. Mean DFT was 12.1 ± 4.7 J vs 12.8 ± 4.8 J (dual coil vs single coil P =. First shock efficacy was 82.2% vs 91.9% (dual coil vs single coil unadjusted odds ratio 0.41 95% confidence interval 0.15–1.13 P =. Sudden cardiac death was also similar (3.6% for dual coil vs 3.7% for single coil P =. After 45.5-month follow-up, overall mortality was similar (19.4% for dual coil vs 21.5% for single coil adjusted hazard ratio 0.95 95% confidence interval 0.68–1.34 P =. DFT data were available in 717 patients.ĭual coil leads were used in 563 and single coil in 246 patients. The selection of a dual vs single coil right ventricular (RV) lead was at the physician’s discretion. In SCD-HeFT, 811 patients with heart failure received a single lead transvenous ICD (Medtronic model 7223) and underwent protocol-driven DFT testing. To compare all-cause mortality, sudden cardiac death, implant defibrillation threshold (DFT) test energies, appropriate shock rates, and first shock efficacy for ventricular tachyarrhythmias for dual coil vs single coil leads in the Sudden Cardiac Death in Heart Failure Trial (SCD-HeFT). SVC coils increase lead complexity, cost, risk of lead failure, and lead removal. Dual coil implantable cardioverter-defibrillator (ICD) leads with a superior vena cava (SVC) electrode have been considered standard of care despite sparse data suggesting improved ICD defibrillation efficacy.
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