Diagnostic usefulness of graded exercise testing in pediatric supraventricular tachycardia.

Background: Episodic symptoms, often reported during exertion, complicate the assessment of suspected supraventricular tachycardia (SVT).

Objective: To examine the diagnostic sensitivity of graded exercise testing in young patients with documented SVT or ventricular preexcitation.

Methods: A single-centre retrospective review identified 53 patients (5.