Thermal Catheter Disruption During Closed-Chest Radiofrequency Ablation of the Atrioventricular Conduction System
| العنوان: | Thermal Catheter Disruption During Closed-Chest Radiofrequency Ablation of the Atrioventricular Conduction System |
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| المؤلفون: | Konrad Steinbach, A. Podczeck, Michael Nürnberg, Hief C, K. Frohner |
| المصدر: | Pacing and Clinical Electrophysiology. 13:719-723 |
| بيانات النشر: | Wiley, 1990. |
| سنة النشر: | 1990 |
| مصطلحات موضوعية: | Male, medicine.medical_specialty, Radio Waves, Radiofrequency ablation, law.invention, Heart Conduction System, law, Atrial Fibrillation, Electrocoagulation, Humans, Medicine, Intraoperative Complications, Electrodes, Overheating (electricity), business.industry, Atrioventricular conduction, Electric Conductivity, Pulse duration, Atrial fibrillation, General Medicine, Middle Aged, medicine.disease, Surgery, Catheter, Electrode, Atrioventricular Node, Cardiology and Cardiovascular Medicine, business, Short circuit, Biomedical engineering |
| الوصف: | Radiofrequency ablation of the atrioventricular conduction system was attempted in a 63-year-old man with drug refractory atrial fibrillation. A total of 5 radiofrequency pulses (750 kHz, power setting: 25-50 W, pulse duration: 9-20 sec) were delivered in a unipolar fashion via the distal electrode of a 7 Fr bipolar electrode catheter without induction of permanent AV block. No direct measurements of current (I) and voltage (U) were made. During the fifth pulse catheter disruption occurred at the interface of the shaft and the proximal electrode. Inspection of the catheter shaft revealed carbonized insulation material indicating overheating of the catheter tip. Overheating was presumably due to an impedance rise with unrecognized clot formation on the distal electrode. This led to progressive melting of insulation material during repeated radiofrequency applications and short circuiting of current flow to the proximal ring electrode that resulted in catheter disruption. This case report is the first to describe a serious complication of radiofrequency ablation. The complication might have been prevented by measurements of U and I, reflecting changes in impedance or by measurements of catheter tip temperature (T). It is concluded that measurements of U, I, and/or T are necessary to control the coagulation process thereby reducing the risk of serious complications during transcatheter radiofrequency ablation. |
| تدمد: | 1540-8159 0147-8389 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a04bcdd8480355962e1fa63fcfc5a9d5 https://doi.org/10.1111/j.1540-8159.1990.tb02097.x |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....a04bcdd8480355962e1fa63fcfc5a9d5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15408159 01478389 |
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