13th International Congress
THE "NEW FRONTIERS"
OF ARRHYTHMIAS 1998

January 24-31, 1998
Marilleva, Trento, Italy

RT-46

Ventricular repolarization abnormalities during and after paroxysmal supraventricular tachycardia

Nelly Paparella, Giuseppe Fuca, Riccardo Cappato*, Feifan Ouyang*, Paolo Alboni.
Division of Cardiology, Ospedale Civile, Cento, Italy,
* II Med ABT - AK St. George, Hamburg, Germany

Background

Previous studies^1,2 have demonstrated that during paroxysmal reentrant supraventricular tachycardia a ST segment depression is frequently observed and, even if marked, it does not appear secondary to myocardial ischemia. In a recent study³ this pattern has been analyzed in order to evaluate its usefulness in order to differentiate the tachycardia mechanism. In the above mentioned studies the tachycardia was non spontaneous, but induced during electrophysiological study. Aim of the present study was to systematically investigate 1) the ST segment depression during spontaneous tachycardia and 2) the ST-T alterations during sinus rhythm, after arrhythmia interruption. In this paper only the ST depression during tachycardia is reported.