[Risk stratification for sudden cardiac death: from the electrophysiological study to T-wave alternans].
T-wave alternans is a change, in the microvolt range, of T-wave amplitude on an ABABAB sequence. At present, various groups of patients have been evaluated, including those with myocardial infarction, congestive heart failure, implantable cardioverter-defibrillators and a clinical indication for programmed ventricular stimulation. In all clinical conditions analyzed, T-wave alternans analysis demonstrated a good diagnostic accuracy, suggesting a possible clinical use of the test in these settings.
Pedretti
Roberto F E
RF
U.O. di Cardiologia, IRCCS Fondazione Salvatore Maugeri, Istituto Scientifico di Tradate, Tradate (VA). roberto.pedretti@fsm.it
Sarzi Braga
Simona
S
Vaninetti
Raffaella
R
Laporta
Antonio
A
Masnaghetti
Sergio
S
Raimondo
Rosa
R
Rubin
Debora
D
Santoro
Francesco
F
Salerno
Mario
M
D002311:Cardiomyopathy, Dilated / Q000503:physiopathology; D016757:Death, Sudden, Cardiac / Q000209:etiology*; D004562:Electrocardiography / Q000379:methods*; D006333:Heart Failure / Q000503:physiopathology; D006801:Humans; D017202:Myocardial Ischemia / Q000503:physiopathology; D011237:Predictive Value of Tests; D011379:Prognosis; D018570:Risk Assessment / Q000379:methods; D017180:Tachycardia, Ventricular / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology