Observational (n=14)
The study aims to evaluate the usefulness of various ECG analysis methods and physiological tests in identifying threatening ventricular arrhythmias in asymptomatic athletes.
The authors studied 14 asymptomatic sportsmen (mean age 17.6 years, range 11-35), practising agonistic activity, with arrhythmias in standard electrocardiograms (ECGs) and normal echocardiograms. The study had three main aims: (1) the search for discriminant parameters to identify threatening arrhythmias with respect to those not at risk, (2) the connection with changes in sympathetic and parasympathetic components, and (3) a pathophysiological understanding of the mechanisms causing the onset of ventricular arrhythmias. The study evaluated arrhythmia behavior by the cycloergometer-effort test, 48 hours Holter monitoring, head-up tilt test, and serum catecolamines RIA evaluation. ECG analysis was performed by the computer with an algorithm procedure.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Assanelli et al. (2002) conducted an observational in Ventricular ectopic activity (n=14). Three ECG analysis methods (cycloergometer-effort test, 48 hours Holter monitoring, head-up tilt test) was evaluated on Discriminant parameters to identify threatening arrhythmias.
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