Introduction
The atrial fibrillation (AF)-related thromboembolic
risk is well known. Approximately
20% of ischemic strokes are of cardioembolic
origin and AF accounts for at least 50% of cardioembolic
etiologies.1 There is also a well-known
link between AF and paroxysmal supraventricular
tachycardia (SVT).2–4 The link between both
tachycardias remains unclear. However, the SVTrelated
thromboembolic risk is unknown. A previous
study of our group5 reported an unusual rate of
SVT induction in patients studied for unexplained
stroke, but electrophysiological study (EPS) is
no more used for the evaluation of unexplained
stroke.