1 - “After correction for the clinical prevalence of the simulated supraventricular tachyarrhythmias the specifi city was: ELA medical: 99%; Biotronic: 95%; Guidant: 94%, Medtronic: 93%, St Jude: 92%” Hintringer F et al: Comparison of the specifi city of implantable dual chamber defi brillator detection algorithms. PACE 2004;27:976-982.