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Journal of Zhejiang University SCIENCE A 2002 Vol.3 No.5 P.632-635

http://doi.org/10.1631/jzus.2002.0632


Value of the adenosine test for diagnosis of dual AV nodal physiology in patients with AV nodal reentrant tachycardia


Author(s):  ZHOU Bin-quan, HU Shen-jiang, LU Duan, WANG Jian-an

Affiliation(s):  Dept. of Cardiology, Sir Run Run Shaw Hospital, Medical College, ZheJiang University, Hangzhou 310016, China; more

Corresponding email(s): 

Key Words:  Adenosine, Dual AV nodal, Electrophysiology, Tachycardia, AV nodal reentrant


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ZHOU Bin-quan, HU Shen-jiang, LU Duan, WANG Jian-an. Value of the adenosine test for diagnosis of dual AV nodal physiology in patients with AV nodal reentrant tachycardia[J]. Journal of Zhejiang University Science A, 2002, 3(5): 632-635.

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author="ZHOU Bin-quan, HU Shen-jiang, LU Duan, WANG Jian-an",
journal="Journal of Zhejiang University Science A",
volume="3",
number="5",
pages="632-635",
year="2002",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2002.0632"
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%T Value of the adenosine test for diagnosis of dual AV nodal physiology in patients with AV nodal reentrant tachycardia
%A ZHOU Bin-quan
%A HU Shen-jiang
%A LU Duan
%A WANG Jian-an
%J Journal of Zhejiang University SCIENCE A
%V 3
%N 5
%P 632-635
%@ 1869-1951
%D 2002
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2002.0632

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T1 - Value of the adenosine test for diagnosis of dual AV nodal physiology in patients with AV nodal reentrant tachycardia
A1 - ZHOU Bin-quan
A1 - HU Shen-jiang
A1 - LU Duan
A1 - WANG Jian-an
J0 - Journal of Zhejiang University Science A
VL - 3
IS - 5
SP - 632
EP - 635
%@ 1869-1951
Y1 - 2002
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2002.0632


Abstract: 
Objectives: This study was aimed at assessing the value of the adenosine test for noninvasive diagnosis of dual AV nodal physiology (DAVNP) in patients with AV nodal reentrant tachycardia (AVNRT). Methods: 53 patients with paroxysmal supraventricular tachycardia (PSVT) were given incremental doses of adenosine intravenously during sinus rhythm before electrophysiological study. The adenosine test was repeated on a subset of 18 patients with AVNRT after radiofrequency catheter ablation. Results: Sudden increments of PR interval of more than 60 msec between two consecutive beats were observed in 26 (83.9%) of 31 patients with typical AVNRT and 2 (9.1%) of 22 patients with AVRT and AT (P<0.01). The maximal PR increment between 2 consecutive beats in the AVNRT group(105±45ms) was significantly greater than that in the AVRT and AT group (20±13ms) (P<0.01).In postablation adenosine test, DAVNP was eliminated in all 8 patients who underwent slow pathway abolition that EPS showed the slow pathway disappeared and 4 of 10 patients who underwent slow pathway modification that EPS showed the slow pathway persisted. Six of 10 patients who exhibited persistent duality showed a marked reduction in the number of beats conducted in the slow pathway after adenosine injection (P<0.01). Conclusions: Administration of adenosine during sinus rhythm may be a useful bedside test for diagnosis of DAVNP in high percentage of patients with typical AVNRT and additionally for evaluating the effects of radiofrequency ablation.

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Reference

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