Key result
In patients with transvenous cardioverter/defibrillator systems, the mean defibrillation threshold significantly increased from 13.3 J at implant to 17.6 J at 6 months (P<0.0001).
Why the study?
Does the defibrillation threshold change over 6 months in patients with transvenous cardioverter/defibrillator systems?
Population
37 consecutive patients with transvenous cardioverter/defibrillator systems implanted for > 6 months, mean…
Design
Cohort
Follow-up
6 months
Authors
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DFT rise post-implant may warrant retesting or higher outputs; leaves open long-term stability in contemporary systems.
Cohort (n=37)
Does the defibrillation threshold change over 6 months in patients with transvenous cardioverter/defibrillator systems?
Absolute Event Rate: 17.6% vs 13.3%
p-value: p=< .0001
Defibrillation thresholds in transvenous ICD systems increase significantly over the first 6 months post-implantation, highlighting the need for adequate safety margins during programming.
Venditti et al. (1994) conducted a cohort in Transvenous cardioverter/defibrillator (TCD) system implantation (n=37). Time post-implantation (6 months) vs. Implant (baseline) was evaluated on Defibrillation threshold (DFT) (p=< .0001). In patients with transvenous cardioverter/defibrillator systems, the mean defibrillation threshold significantly increased from 13.3 J at implant to 17.6 J at 6 months (P<0.0001).
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