Spectral Analysis of Chronic Atrial Fibrillation and Its Relation to Minimal Defibrillation Energy
| العنوان: | Spectral Analysis of Chronic Atrial Fibrillation and Its Relation to Minimal Defibrillation Energy |
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| المؤلفون: | Mau Song Chang, Tsair Kao, Ann-Shin Liu, Yu-An Ding, Wen-Chung Yu, Shih Ann Chen, Ching-Tai Tai |
| المصدر: | Pacing and Clinical Electrophysiology. 25:1747-1751 |
| بيانات النشر: | Wiley, 2002. |
| سنة النشر: | 2002 |
| مصطلحات موضوعية: | Male, medicine.medical_specialty, Defibrillation, medicine.medical_treatment, Electric Countershock, Cardioversion, Electrocardiography, Internal medicine, Atrial Fibrillation, medicine, Humans, Chronic atrial fibrillation, Spectral analysis, Sinus rhythm, Least-Squares Analysis, Aged, Fourier Analysis, business.industry, Spectral density, Signal Processing, Computer-Assisted, Atrial fibrillation, General Medicine, medicine.disease, Anesthesia, Chronic Disease, Cardiology, Female, Cardiology and Cardiovascular Medicine, business, Algorithms, Energy (signal processing) |
| الوصف: | TAI, C-T., et al.: Spectral Analysis of Chronic Atrial Fibrillation and Its Relation to Minimal Defibrillation Energy. The average rate of fibrillatory activity may reflect the global activation pattern of AF. Electrical cardioversion is the most effective method of converting chronic AF to sinus rhythm. The aim of this study was to investigate the relation between the minimal defibrillation energy requirement and the dominant frequency of chronic AF. Twenty-nine patients with chronic AF (mean duration 57.9 ± 7.7 months) underwent external electrical cardioversion. Before cardioversion, the frequency content of the 60-second AF in ECG lead V1 was quantified using digital signal processing. After band-pass filtering, QRST complexes were cancelled using a recursive least squares algorithm. The resulting fibrillatory baseline signal was subjected to fast Fourier transform and was displayed as a power spectrum. The dominant AF frequency was found to range from 4.9 to 8.7 Hz (mean 6.7 ± 0.9 Hz). Twenty-six patients had successful conversion of AF to sinus rhythm without immediate recurrence. There was a positive correlation between the minimal defibrillation energy and the dominant frequency of chronic AF (ρ= 0.414, P = 0.035). Thus, power spectral analysis of AF using the surface ECG is feasible and may be useful in predicting the minimal shock energy required for successful cardioversion of chronic AF. |
| تدمد: | 1540-8159 0147-8389 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c74ba4e50bfc554183d551242ff6d0f https://doi.org/10.1046/j.1460-9592.2002.01747.x |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....3c74ba4e50bfc554183d551242ff6d0f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15408159 01478389 |
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