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Archives of the Turkish Society of Cardiology
Predicting Recurrence of Atrial Fibrillation in Patients Converted to Sinus Rhythm by Electrical Cardioversion Using Surface ECG: Analysis of Dispersion of P Wave Duration in Standard and Right Precordial ECG Leads [Turk Kardiyol Dern Ars]
Turk Kardiyol Dern Ars. 2000; 28(7): 427-431

Predicting Recurrence of Atrial Fibrillation in Patients Converted to Sinus Rhythm by Electrical Cardioversion Using Surface ECG: Analysis of Dispersion of P Wave Duration in Standard and Right Precordial ECG Leads

B. Görenek1, B. Çavuşoğlu1, B. Timuralp1, S. Alpsoy1, Y. Ahmet ÜNALIR1, N. Ata1

We investigated the role of P-wave dispersion in predicting recurrence of atrial fibrillation (AF) in patients converted to sinus rhythm by electrical cardioversion. Twenty patients with AF, mean age of 49 ± 1 (SE) years ( 12 females), who were converted to sinus rhythm by cardioversion, but during their six months follow-up period recurrence of AF was observed were taken into group A. Twenty patients ( 13 females) with AF, with the mean age of 51 ± 2 (SE) years, who were converted to sinus rhythm by cardioversion and during their six months follow-up period sinus rhythm was maintained were taken into group B. P-wave durations were measured in each ECG recorded after cardioversion with the rate of 50 mm/sec for a ll patients. Maximum P-wave durations (Pmaks) and minimum P-wave durations (Pmin) were detected for every ECG recording. The P-wave dispersion in standard 12 lead ECG, Pd, was described as Pd= Pmaks - Pmin, the P-wave dispersion in additional right precordial leads (V³R- V6R ) (rPd) was described as rPd= rPmaks - rPmin for each patients. The maximum P-wave duration in all detected leads was described as Pmakstotal, and the minimum P-wave duration in all detected leads was described as Pmintotal for every patient. The difference between Pmakstotal and Pmintotal was defined as largest P-wave dispersion (?p). Pmakstotal and rPmax values were higher in group A than group B (125,3 ± 0,7 (SE) msec versus 121,8 ± 0,6 msec, and 123,8 ± 0,7 msec versus 121,0 ± 0,6 msec p<0.01, p<0.01, respectively). Pmin values were higher in group B (109,1 ± 1,0 msec versus 111,6 ± 0,5 msec, respectively, p<0.05). Pd and rPd values were higher in group A(14,0 ± 1,3 msc versus 9,7 ± 0,9 msc, and 13,3 ± 0,9 msc versus 10,0 ± 0,9 msc p<0.05, p<0.05, respectively). The main difference between two group was in oup was in ?p values ( 17,1 ± 1,0 msc in group A, 12,0 ± 0,8 msc in group B, p<0.001). In conclusion, P-wave analysis and P-wave dispersion can be used in predicting of recurrence of AF in patients converted to sinus rhythm by cardioversion, and adding right precordial leads (V³R- V6R) can be more helpful. In patients with large ?p values, the risk of recurrence of AF is higher.

Keywords: Atrial fibrillation, electrical cardioversion, dispersion of P wave duration

How to cite this article
B. Görenek, B. Çavuşoğlu, B. Timuralp, S. Alpsoy, Y. Ahmet ÜNALIR, N. Ata. Predicting Recurrence of Atrial Fibrillation in Patients Converted to Sinus Rhythm by Electrical Cardioversion Using Surface ECG: Analysis of Dispersion of P Wave Duration in Standard and Right Precordial ECG Leads. Turk Kardiyol Dern Ars. 2000; 28(7): 427-431
Manuscript Language: Turkish


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