Quadruple Pads Approach for External Cardioversion of Atrial Fibrillation
| Autor: | Johannes Brachmann, Nassir F. Marrouche, Jens Gunther, Hans J. Frielitz, Gust H. Bardy |
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| Rok vydání: | 2001 |
| Předmět: |
Male
medicine.medical_specialty medicine.medical_treatment Electric Countershock External cardioversion Cardioversion Electrocardiography Refractory Left atrial Internal medicine Atrial Fibrillation medicine Humans Sinus rhythm Aged Ejection fraction business.industry Stroke Volume Atrial fibrillation General Medicine Middle Aged medicine.disease Treatment Outcome Shock (circulatory) Chronic Disease Retreatment Cardiology Female medicine.symptom Cardiology and Cardiovascular Medicine business Follow-Up Studies |
| Zdroj: | Pacing and Clinical Electrophysiology. 24:1321-1324 |
| ISSN: | 1540-8159 0147-8389 |
| Popis: | MARROUCHE, N.F., et al.: Quadruple Pads Approach for External Cardioversion of Atrial Fibrillation. This study examined the alternative of transthoracic quadruple pads shock delivery of two simultaneous 360-J shocks to convert refractory AF in patients failing standard external cardioversion. Forty-six patients (mean age 58 ± 11 years, 23 men) with chronic AF (duration 14 ± 17 months, range 1–60 months) were included. The left atrial diameter was 47 ± 7 mm. The left ventricular ejection fraction was 59 ± 11%. Antiarrhythmic drugs had failed to convert 44 (96%) of these patients. All patients underwent conventional external transthoracic cardioversion with pads applied in the antero-apical position using energy settings of 200 and 360 J, consecutively. In all patients who failed conventional cardioversion, quadruple pads were applied. Quadruple pads consisted of four pads, two in the antero-posterior position and two in a second apex-posterior position. Standard cardioversion to sinus rhythm was successful in 19 (41%) patients after use of a single 200-J shock and an additional 8 (17%) after a single 360-J shock. The total success rate was 58% after conventional cardioversion. The quadruple pads were successful in 14 (74%) of the remaining 19 patients. Four of the five patients who failed the quadruple pads approach subsequently also failed internal cardioversion. Thus, the cardioversion success rate was increased from 48% using the conventional approach to 89% using the quadruple pads approach. Quadruple pads external cardioversion is highly effective in converting chronic AF refractory to standard shock protocols to sinus rhythm. Moreover, the failure of the quadruple pads approach seems to predict poor response to internal cardioversion. |
| Databáze: | OpenAIRE |
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