electrocardiogram of an individual with Wolff–Parkinson–White syndrome exhibiting 'slurred upstrokes' or 'delta waves' before the QRS complexes An episode of SVT may present with palpitations, dizziness, shortness of breath, or losing consciousness (fainting). The electrocardiogram (ECG) would appear as a narrow-complex SVT. Between episodes of<unk>  the affected person is likely to be asymptomatic; however, the ECG would demonstrate the classic delta wave in Wolff–Parkinson–White syndrome.
Atrioventricular reentrant tachycardia
AV nodal reentrant tachycardia  AV-nodal reentrant tachycardia  1
AV nodal reentrant tachycardia
Junctional ectopic tachycardia
Wandering atrial pacemaker
Re-entry ventricular arrhythmia
Pre-excitation syndrome
Sinoatrial arrest