atrioventricular nodal reentrant tachycardia

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Related to AVNRT: AVRT

atrioventricular nodal reentrant tachycardia

AVNRT Cardiology The most common form of paroxysmal SVT Treatment Antiarrhythmics are rarely successful; catheter ablation of the fast P wave causes complete heart block in 10%, requiring pacemaker placement; selective catheter ablation of the atrial end of the slow PW using radiofrequency current may eliminate AVNRT with little risk of AV block. See Supraventricular tachycardia.

atrioventricular nodal reentrant tachycardia

Abbreviation: AVNRT
The most common supraventricular tachycardia, resulting from abnormal conduction of electrical impulses through a self-sustaining circuit in the atrioventricular node. It occurs more often in women than in men, often in their twenties. The heart rate is usually between 150 and 250 bpm.
Synonym: junctional reciprocating tachycardia See: re-entry
See also: tachycardia
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References in periodicals archive ?
Radiofrequency ablation (RFA), used as a therapy of choice for AVNRT of "slow-fast" type, was found efficient in 93.
THE SF-36 SCORES OF EXAMINEES WITH AVNRT (PHYSICAL HEALTH) SF-36 scales Control Before RFA (n=24) (n=43) Physical 75.
Sinus tachycardias and atrial tachycardias frequently demonstrate a "warm up" in rate, for instance, while AVNRT and AVRT are often triggered by premature atrial contractions.
But the company did post-hoc analyses of subgroups, and determined that treatment was successful in 91% of the 104 AVNRT subjects, compared to 69% and 67% of those with AVRT and AF, respectively The long-term success rate for the AVNRT patients who had not been lost to follow-up at 6 months was 91%.
There were no cases of permanent AV block in 151 ablated subjects with AVNRT or AVRT, despite frequent ablations near the AV node, according to the manufacturer.
In the study, seven patients--three with AVNRT and four with AVRT--experienced eight acute major complications within 7 days of the procedure, for a major complication rate of 4.
The occurrence of junctional ectopy during perinodal RF energy delivery has been associated with the successful elimination of AVNRT (2).
Fifty consecutive patients (18 males; mean age of 39 [+ or -] 22 years) who underwent successful slow pathway ablation for AVNRT were enrolled in the present retrospective study, after having given written informed consent.