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KMID : 0368119950250030554
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Korean Circulation Journal
1995 Volume.25 No. 3 p.554 ~ p.559
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Radiofrequency Catheter Ablation in Patients with Paroxysmal Supraventricular Tachycardia : The Initial Experience and The extent of Myocardial Damage
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박지원
윤호중/정욱성/이만영/노태호/채장성/김재형/최규보/홍순조
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Abstract
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Background :
@EN The catheter ablation using radiofrequency(RF) energy in patients with atrioventricular nodal reentrant tachycardia(AVNRT) and atrioventricular reentrant tachycardia(AVRT) has been proved as a safe and effective nonpharmacologic therapeutic
modality. The purpose of our study was to evaluate te success rate and complications of the initial experience and to determine the extent of myocardial damage of RF catheter ablation.
@ES Method:
@EN Electrophysiologic study was performed with the standard technique. Twenty five patients(M : F=16 : 9, mean age : 42 years old) underwent RF catheter ablation in St. May's Hospital from April to December in 1994. The RF generator in this
study
was
RFG-3D model and catheters were 6F or 7F steerable catheters with 4mm distal tip. In order to evaluate theextent of myocardial damage tne WBC count, LDH, CK, and CK-MB fraction were checked before and after RF catheter ablation and the Tc99m
myocardial
scintigraphy was performed within 72 hours of the procedure.
@ES Result :
@EN Six of twenty five patients had AVNRT, in which the success rate of selective ablation of the slow pathway was 83.8%. Nineteen patients with AVRT had one accessory pathway. The ablation success rate of 14 accessory pathways in left free wall
location was 85.7%, and that of 3 in left posteroseptal location was 66.6%. Two right sided accessory pathways were not ablated successfully. The level of CK-MB fraction after ablation was within normal limit. Only one case revealed grade 2 or
hot
spot
in Tc99m myocardial scintigraphy.
@ES Conclusion:
@EN The RF catheter ablation in patients with AVNRT and AVRT is a safe and effective nonpharmacologic therapeutic modality. But right sided accessory pathways, requiring more experiences and better technique. The extent of myocardial damage after
RF
catheter ablation reveals relatively minimal by cardiac enzyme study and Tc99m myocardial scintigraphy.
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KEYWORD
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