Key result
A malpositioned RV catheter electrode significantly elevated defibrillation thresholds for a total endocardial system (from 17.1 to 27.6 J, P<0.05) but not for a system including a subcutaneous array.
Why the study?
Does a subcutaneous array electrode prevent the increase in defibrillation thresholds caused by a malpositioned RV catheter in a pig model?
Population
8 anesthetized pigs
Comparison
Defibrillation with a malpositioned right… vs Defibrillation with the RV catheter at the apex…
Design
Preclinical
Authors
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Subcutaneous arrays may stabilize DFTs despite RV malposition in pigs; leaves open translation to human ICD practice.
Does a subcutaneous array electrode prevent the increase in defibrillation thresholds caused by a malpositioned RV catheter in a pig model?
p-value: p=<0.05
A subcutaneous array electrode mitigates the significant elevation in defibrillation thresholds caused by a malpositioned right ventricular catheter in a porcine model.
Usui et al. (1995) studied High defibrillation thresholds (n=8). Subcutaneous array (SQA) electrode vs. Endocardial lead system without SQA was evaluated on Defibrillation thresholds (DFTs) at different RV catheter positions (p=<0.05). A malpositioned RV catheter electrode significantly elevated defibrillation thresholds for a total endocardial system (from 17.1 to 27.6 J, P<0.05) but not for a system including a subcutaneous array.
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