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Title: Comparison of supraventricular tachycardia from concealed bypass tract and Wolff-Parkinson-White syndrome
Authors: Rungroj Krittayaphong
Kiertuai Bhuripanyo
Ongkarn Raungratanaamporn
Charn Sriratanasathavorn
Charuwan Kangkagate
Sukanya Pooranawattanakul
Anna Chirapastan
Teiranach Kovitcharoentrakul
Suphachai Chaithiraphan
Mahidol University
Keywords: Medicine
Issue Date: 1-Nov-2000
Citation: Journal of the Medical Association of Thailand. Vol.83, No.SUPPL. 2 (2000)
Abstract: Supraventricular tachycardia (SVT) is a common problem. There are 2 types of accessory atrioventricular pathway (AP) causing SVT: one can conduct antegradely (WPW syndrome) and another can conduct only in a retrograde direction (concealed bypass tract or CBT). There are little data of the significance and difference of the two types in Thailand. The objectives of this study were to compare characteristics of patients, accessory pathways and outcome of radiofrequency catheter ablation (RFCA) between the 2 types of accessory pathways. We reviewed the electrophysiology report of patients with supraventricular tachycardia from the accessory pathway who were referred for RFCA. There were 74 males and 74 females at a mean age of 37 years. CBT accounts for 44 per cent of SVT from AP. Compared to CBT, WPW syndrome was more in the right-sided location, more associated with heart disease, a higher number of accessory pathways, more inducible atrial fibrillation and more difficult to do ablation. However, the overall success rate of RFCA was similar. Although the recurrence rate was 8.4 per cent, all patients with recurrence were successfully reablated. We concluded from this study that RFCA is a highly effective method for the treatment for both forms of accessory pathway although there are some differences between WPW syndrome and CBT.
ISSN: 01252208
Appears in Collections:Scopus 1991-2000

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