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Temporal decline in defibrillation thresholds with an active pectoral lead system

^a Division of Cardiology, University of Maryland School of Medicine, Baltimore, Maryland, USA

View larger version (24K): [in a new window]   Figure 1 A comparison of defibrillation thresholds (DFTs) at implantation and at long-term follow-up (>6 months) for the entire study group. The DFTs decreased significantly at long-term follow-up compared with at implantation (p < 0.01). The mean values ± SD are presented.

View larger version (15K): [in a new window]   Figure 2 Change in defibrillation thresholds (DFTs) as a function of time. There was no relationship between temporal changes in DFT and the timing of long-term testing (R2 = 0.001, p = 0.79).