narrow QRS complex tachycardia

narrow QRS complex tachycardia

A relatively rapid–usually > 100 beats/min cardiac rhythm with a QRS duration of ≤ 100 msec which, while rarely fatal, may be symptomatic Mechanism Reentry causes > 90% of NQCRs; other mechanisms include triggered activity, and automaticity Treatment IV adenosine
References in periodicals archive ?
Atrioventricular nodal reentrant tachycardia (AVNRT), a reentrant form of narrow QRS complex tachycardia, is based on a dual (slow and fast) pathway of the compact AV node (FIGURE 4).
Orthodromic atrioventricular reciprocating tachycardia (AVRT), or Wolff-Parkinson-White syndrome, is a narrow QRS complex tachycardia in which antegrade conduction is via the AV node and retrograde conduction is via an accessory pathway (bundle of Kent).
There are a number of characteristics to consider in the differential diagnosis of a patient with narrow QRS complex tachycardia (ALGORITHM).
AV dissociation is rarely seen in narrow QRS complex tachycardia.
Analyze P wave axis, morphology, and timing for help in diagnosing narrow QRS complex tachycardia.
Usefulness of ST-segment elevation in lead aVR during tachycardia for determining the mechanism of narrow QRS complex tachycardia.
Value of analysis of ST segment changes during tachycardia in determining type of narrow QRS complex tachycardia.
While most narrow QRS complex tachycardias are easily diagnosed, some pose a diagnostic challenge.
We start with a summary of the various types of narrow QRS complex tachycardias, accompanied in some cases with 12-lead electrocardiogram (EKG) strips.
Narrow QRS complex tachycardias fall into 2 broad categories: those that are sinus node-generated, and those that are not.
Differentiation of paroxysmal narrow QRS complex tachycardias using the 12-lead electrocardiogram.
Electrocardiographic manifestations: narrow QRS complex tachycardias.