Conduction Properties of the Crista Terminalis in Patients with Atrial Flutter Due to Amiodarone Therapy for Atrial Fibrillation
| العنوان: | Conduction Properties of the Crista Terminalis in Patients with Atrial Flutter Due to Amiodarone Therapy for Atrial Fibrillation |
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| المؤلفون: | Mau Song Chang, Fei Chiun Lan, Yu An Ding, Yung Kuo Lin, Ching Tai Tai, Hung Yi Chen, Shih Ann Chen |
| المصدر: | Pacing and Clinical Electrophysiology. 26:2241-2246 |
| بيانات النشر: | Wiley, 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | Male, medicine.medical_specialty, Amiodarone, Typical atrial flutter, Internal medicine, Atrial Fibrillation, medicine, Humans, Fluoroscopy, Sinus rhythm, Heart Atria, cardiovascular diseases, Aged, medicine.diagnostic_test, business.industry, P wave, Atrial fibrillation, General Medicine, Middle Aged, medicine.disease, Electrophysiology, medicine.anatomical_structure, Atrial Flutter, cardiovascular system, Cardiology, Female, Cardiology and Cardiovascular Medicine, business, Crista terminalis, Anti-Arrhythmia Agents, Atrial flutter, medicine.drug |
| الوصف: | Some patients with atrial fibrillation (AF) treated by antiarrhythmic drugs (AAD) can develop typical atrial flutter, but the mechanism is not clear. This study included 21 patients with AF. Group I (n = 7) had typical atrial flutter due to amiodarone therapy. Group II (n = 7) did not develop atrial flutter after amiodarone treatment. Group III (n = 7) did not receive AAD treatment. A 7 Fr, 20-pole electrode catheter was placed along the CT identified by fluoroscopy and intracardiac echocardiography. After restoration of the sinus rhythm, decremental pacing near the CT was performed until 2 to 1 atrial capture. Complete transverse conduction block was defined as the appearance of double potentials with opposite activation sequence along the CT. Focal transverse conduction delay was defined as the appearance of double potentials at ≥ 2 recording sites. Focal transverse conduction delay was observed during pacing at the cycle length of 693 ± 110 ms in group I, 360 ± 97 ms in group II and 343 ± 109 ms in group III (P = 0.001). Complete transverse conduction block was observed during pacing at the cycle length of 391 ± 118 ms in group I and 231 ± 23 ms in group II (P = 0.001), but not in group III. In conclusion, focal transverse conduction delay in the CT was common in patients with AF. A predisposition to the line of the conduction block in the CT might contribute to the conversion of AF to typical atrial flutter due to amiodarone therapy. (PACE 2003; 26:2241–2246) |
| تدمد: | 1540-8159 0147-8389 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71e3d213cfb3998b9809a2946352c859 https://doi.org/10.1111/j.1540-8159.2003.00354.x |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....71e3d213cfb3998b9809a2946352c859 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15408159 01478389 |
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