| Autor: |
Goli, Vasu D., Prasad, Rajesh, Hamilton, Karen, Moulton, Kriegh P., Tyler, Maureen, Logan, Paula, Lazzara, Ralph, Jackman, Warren M. |
| Předmět: |
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| Zdroj: |
Pacing & Clinical Electrophysiology; Nov1991, Vol. 14 Issue 11, p1992-1997, 6p, 1 Chart |
| Abstrakt: |
Background: Catheter ablation of accessory pathways (APs) provides a definitive therapy for patients with Wolff-Parkinson-White Syndrome. The reported incidence of thrombus formation an ablation-induced injuries with direct current shock varies from 0%-20% in animal studies. The purpose of this study was to determine the prevalence of mural thrombus following catheter ablation with radiofrequency current of accessory pathways in humans. Methods and Results: Radiofrequency current (30-35 watts) was applied through a catheter electrode placed against the mitral or tricuspid annulus guided by catheter recordings of AP potentials. Transthoracic (TTE) and trunsesophageal echocardiography (TEE) were performed in 95 of 111 patients, at 18 ± 6 hours following catheter ablation. After ablation, no thrombus was identified at or near the ablation site in any patient. Two out of 95 patients had a mural thrombus at a remote site that was detected by TEE but not by TTE. No new wall motion abnormality was detected in any patient. No significant regurgitant valvular lesion was found in any patient. Conclusion: Intracardiac thrombus was not identified at the site of catheter ablation, possibly owing to the small lesions produced by radiofrequeney energy and high blood flow normally present in those areas. However, patients may be at small risk for mural thrombus at a remote site from prolonged placement of catheters. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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