text: An ECG is very helpful in the diagnosis of<unk><unk>  tachycardia. Findings on an ECG suggestive or diagnostic of<unk><unk>  tachycardia include regular R-R intervals, rapid<unk>  rate with an indistinguishable atrial rate (absence of p-waves), Av dissociation, and a wide QRS complex (more 0.12 sec).
option_0: Pulseless ventricular tachycardia electrocardiogram
option_1: Junctional tachycardia electrocardiogram
option_2: AVNRT electrocardiogram
option_3: Atrial flutter electrocardiogram
option_4: Brugada syndrome electrocardiogram
option_5: Premature atrial contraction electrocardiogram
option_6: Catecholaminergic polymorphic ventricular tachycardia electrocardiogram
option_7: Junctional bradycardia electrocardiogram