narrow complex tachycardia


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narrow complex tachycardia

Tachycardia in which the duration of the QRS complex is less than 0.12 seconds. Most narrow complex tachycardias originate from a pacemaker above the ventricles and are therefore supraventricular tachycardias.
See also: tachycardia
References in periodicals archive ?
In narrow complex tachycardia the heart rate is more than 100/ minute and QRS complex is less than 120 ms (three small squares on ECG).
Resuscitation Council guidelines(1), the management of stable and regular narrow complex tachycardia involves use of vagal manoeuvres, adenosine and beta blockers.
Indications for referral to a cardiac arrhythmia specialist include the presence of a wide complex tachycardia of unknown mechanism, Wolff-Parkinson-White syndrome, severe dyspnea or syncope during palpitations, and narrow complex tachycardias that are resistant to drug therapy.
Irregular, narrow complex tachycardias include AF (most likely), AFL with variable block or MAT.