First-shock success was significantly higher, particularly in patients with a BMI >25 kg/m(2), when a non-escalating initial 200 J energy was selected. The overall success, duration of procedure and amount of sedation administered, however, did not differ significantly between the two protocols.
The signal-averaged ECG and left ventricular ejection fraction are each independently predictive of arrhythmic events after myocardial infarction, but the Holter ECG is not. A combination of clinical and investigative variables, including the signal-averaged ECG, best identifies patients at highest risk.
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