ECG showing junctional tachycardia. Narrow complex QRS. No P waves. Heart rate fast.
Classification and external resources
Junctional tachycardia is a form of supraventricular tachycardia characterized by involvement of the AV node. It can be contrasted to [1 ] atrial tachycardia. It is a tachycardia associated with the generation of impulses in a focus in the region of the atrioventricular node.
Junctional tachycardia (rate about 115/min) dissociated from a slightly slower
(rate about 107/min) producing one form of double tachycardia; pairs of ventricular capture (C) beats (5th, 6th, 19th, and 20th beats); see laddergram.
It can be associated with
digitalis toxicity. It may be also be due to onset of [2 ] acute coronary syndrome, heart failure, conduction system diseases with enhanced automaticity, or administration of theophylline. [3 ]
Diagnosis [ edit ]
This section requires expansion. (December 2014)
It can appear similar to
atrioventricular nodal reentrant tachycardia. [4 ]
One form is
junctional ectopic tachycardia.
See also [ edit ]
References [ edit ]