Catheter ablation of accessory atrioventricular pathways in 114 symptomatic patients with Wolff-Parkinson-White syndrome—a comparative study of direct-current and radiofrequency ablation

Chen, Shih Ann; Tsang, Wing Ping; Hsia, Cheng Yuan; Wang, Der Chih; Chiang, Chern En; Yeh, Hon I.; Chen, Jaw Wen; Ting, Chih Tai; Kong, Chi Woon; Wang, Shih Pu; Chiang, Benjamin N.; Chang, Mau Song

doi:10.1016/0002-8703(92)90598-p

Cited by 13 publications

(2 citation statements)

References 21 publications

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“…19,23) In another study, they found no evidence that RF ablation may impair left ventricular systolic function in patients with preserved left ventricular function, 23) but they did not evaluate left ventricular diastolic function. Our study results showed no negative effect of RF ablation on left ventricular systolic function in patients with normal left ventricular systolic function, in accordance with the results of Chen, et al…”

Section: Discussionmentioning

confidence: 99%

Sequential Evaluation of Left Ventricular Systolic and Diastolic Function After Radiofrequency Catheter Ablation

et al. 2004

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SUMMARYRadiofrequency (RF) catheter ablation has become standard therapy for many types of arrhythmias. RF energy may cause deterioration in left ventricular function by damaging the myocardium. The aim of the present study was to assess the changes in left ventricular function after catheter ablation using various echocardiographic parameters.Forty patients (22 women), aged 37 ± 14 years (range, 15-76 years), underwent catheter ablation for various tachycardias. Routine echocardiogaphic examination was done in all patients. Left ventricular systolic function was evaluated by the modified Simpson method and tissue Doppler. With regard to left ventricular diastolic function parameters, diastolic early (E) and late (A) transmitral filling velocities, deceleration time (DT), isovolumetric relaxation time (IVRT), and tissue Doppler parameters were assessed. All ventricular function parameters were assessed before, and 1 hour, 1 day, and 1 month after the catheter ablation procedure. To avoid any influence of heart rate on diastolic function parameters, the E/A ratio, DT, and IVRT were adjusted to heart rate (cE/A, cDT, cIVRT).No changes in left ventricular systolic function after the ablation were observed. After the ablation procedure (1 hour, 1 day, and 1 month) the cE/A ratio decreased from 1.42 ± 0.43 to 1.19 ± 0.40, 1.18 ± 0.40, and 1.30 ± 0.33 (P = 0.009), respectively. cDT increased from 210 ± 54 to 272 ± 64, 255 ± 60, 240 ± 64 (P = 0.001), respectively. Likewise cIVRT increased from 113 ± 22 to 133 ± 54, 123 ± 27, 117 ± 19 (P = 0.007), respectively. Significant changes were also observed concerning tissue Doppler parameters in assessing diastolic function.Although no significant changes were observed in systolic function after RF ablation, this procedure may have some detrimental effects on ventricular diastolic function parameters. (Jpn Heart J 2004; 45: 429-440)

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Section: Discussionmentioning

confidence: 99%

Sequential Evaluation of Left Ventricular Systolic and Diastolic Function After Radiofrequency Catheter Ablation

et al. 2004

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“…R ADIOFREQUENCY catheter ablation of accessory pathways has been shown to be safe and effective in patients with Wolff-Parkinson-White syndrome. [1][2][3][4][5] Even in experienced hands, although the ablation procedure seems to be feasible, this approach may not always be successful. Because catheter ablation requires skill in interpretation of the electrophysiologic mechanism and manipulation of the mapping/ablation catheter to map the accessory pathway location, the outcome depends on the knowledge of electrophysiology and operation technique.…”

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confidence: 99%

The Effects of Accumulated Experience on Radiofrequency Ablation of Accessory Pathways.

et al. 1995

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SUMMARYIncreasing experience in radiofrequency ablation for accessory pathways appears to reduce the procedure time, radiation time and radiofrequency pulse number, and results in a higher success rate. However, the effect of a learning curve on this procedure from the perspective of location and conduction direction of accessory pathways has not been reported before. The purpose of this study was to determine the effect of accumulated experience on the outcomes of radiofrequency ablation for accessory pathways and on the duration of the procedure parameters by analyzing the results of a dedicated ablation team. The first 512 patients with a single accessory pathway treated in this laboratory were included for analysis of the procedure parameters with respect to locations and conduction directions of accessory pathways. The results showed that the average procedure time, radiation time and radiofrequency pulse number differed significantly among the different subgroups (left free wall, right free wall, posteroseptal and anteromidseptal location; manifest or concealed conduction). All subgroups except the anteromidseptal pathways showed a significant improvement of the procedure parameters with increased ablation experience. Although the initial rate of improvement was similar among the different subgroups, the rate of improvement in left free wall pathways nearly reached a plateau after 120 ablation procedures. Thus it was concluded that a certain number of ablation procedures was necessary before achievement of a high success rate with shorter procedure and radiation times and a lower radiofrequency pulse number. (Jpn Heart J 36: 729-739, 1995)

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Reversibility of left ventricular dysfunction after successful catheter ablation of supraventricular reentrant tachycardia

Chen

Yang

Chiang

et al. 1992

American Heart Journal

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Catheter ablation of accessory atrioventricular pathways in 114 symptomatic patients with Wolff-Parkinson-White syndrome—a comparative study of direct-current and radiofrequency ablation

Cited by 13 publications

References 21 publications

Sequential Evaluation of Left Ventricular Systolic and Diastolic Function After Radiofrequency Catheter Ablation

Sequential Evaluation of Left Ventricular Systolic and Diastolic Function After Radiofrequency Catheter Ablation

The Effects of Accumulated Experience on Radiofrequency Ablation of Accessory Pathways.

Reversibility of left ventricular dysfunction after successful catheter ablation of supraventricular reentrant tachycardia

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