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Titolo:
The value of signal-averaged P wave ECG in the detecting of patients at risk of atrial fibrillation recurrence after successful cardioversion: The value of signal-averaged P wave after cardioversion
Autore:
Aytemir, K; Aksoyek, S; Yildirir, A; Ozer, N; Oto, A;
Indirizzi:
Hacettepe Univ, Fac Med, Dept Cardiol, TR-06100 Ankara, Turkey Hacettepe Univ Ankara Turkey TR-06100 t Cardiol, TR-06100 Ankara, Turkey
Titolo Testata:
HEARTWEB
fascicolo: 3, volume: 4, anno: 1999,
pagine: NIL_18 - NIL_27
Fonte:
ISI
Lingua:
ENG
Soggetto:
SINUS RHYTHM; ELECTRICAL CARDIOVERSION; DURATION; ELECTROCARDIOGRAM; MAINTENANCE; PREDICTION; FLUTTER; SURGERY;
Keywords:
signal-averaged ECG; P wave analysis; chronic atrial fibrillation; cardioversion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Aytemir, K 61 Sheldrick Close, London SW19 2UQ, England 61 Sheldrick Close London England SW19 2UQ SW19 2UQ, England
Citazione:
K. Aytemir et al., "The value of signal-averaged P wave ECG in the detecting of patients at risk of atrial fibrillation recurrence after successful cardioversion: The value of signal-averaged P wave after cardioversion", HEARTWEB, 4(3), 1999, pp. NIL_18-NIL_27

Abstract

Atrial fibrillation is a very common arrhythmia and mortality and risk of thromboembolism are higher in patients with atrial fibrillation. Therefore it is essential to restoring sinus rhythm in patients with atrial fibrillation. After successful cardioversion, recurrence rate of atrial fibrillationis high. However a good predictor of atrial fibrillation recurrence after successful cardioversion has not been established yet. The aim of the studywas to assess the value of high resolution analysis of signal-averaged ECGof P-wave in prediction of atrial fibrillation recurrence after cardioversion of atrial fibrillation. Methods: The P wave triggered SAECG was recorded in 73 patients after successful cardioversion. Duration of the filtered P-wave and the root mean square voltages for the last 20 msec (RMS20) of the P-wave were calculated. All patients were evaluated by echocardiography. Results: During 6 months follow-up period recurrence of atrial fibrillation was observed in 31 (42.5%) patients and in 42 (57.5%) patients sinus rhythm was maintained. There was no difference in gender, age, presence of organic heart disease, left atrial diameter, left ventricular ejection fraction, use of antiaryhthmic drug, and duration of atrial fibrillation. The filtered P-wave duration was longer and RMS20 value was lower in patients with recurrence of atrial fibrillation than in patients who maintained sinus rhythm (138.3+/-12.5 msec vs. 112.4+/-11.8 msec, p= 0.001; 1.9+/-0.7m v vs 2.5+/-0.6 m v,.p=0.001). A filtered P-wave duration (3) 128msec associated witha RMS 20 pound 2.1m v had a sensitivity of 70 % and specificity of 76 % for the detection of patients with recurrence of atrial fibrillation after successful cardioversion of atrial fibrillation. We found that the likelihoodof recurrence of AF after cardioversion was increased 4.31 (95% confidenceinterval 2.08-9.83) fold if these parameters were used. Conclusion: These results suggest that signal-averaged ECG of P-wave may be helpful for identification of patients with recurrence of atrial fibrillation after successful cardioversion.

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Documento generato il 05/04/20 alle ore 08:52:02