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A single defibrillation safety margin test is sufficient in most ICD patients: experience from a UK tertiary centre

September 2010 Br J Cardiol 2010;17:240–3

A single defibrillation safety margin test is sufficient in most ICD patients: experience from a UK tertiary centre

Faizel Osman, Abubakar Habib, Mohamed Jeilan, Suman Kundu, Jiun Tuan, Rajkumar Mantravadi, J Douglas Skehan, Peter J Stafford, Ravi K Pathmanathan, G Andre Ng 

Abstract

We retrospectively evaluated our ICD database between September 2006 and October 2007 to determine baseline patient/procedure characteristics and details of defibrillation threshold assessment during implant. All patients underwent at least two defibrillation safety margin (DSM) tests (≥10 J below the maximum output of the device). Logistic regression analysis was performed to identify factors predicting two successful consecutive DSM tests (with ≥10 J safety margin). A total of 264 procedures were performed (mean age ± standard error: 65.6 ± 0.8 years); 258 (97.7%) patients had successful first DSM test (with ≥10 J safety margin),

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