Can P Wave Parameters Obtained from 12-Lead Surface Electrocardiogram be a Predictor for Atrial Fibrillation in Patients Who Have Structural Heart Disease?

• Published in: Angiology 2003-07, Vol.54 (4), p.475-479
• Main Authors: Altunkeser, Bülent B., Özdemir, Kurtuluş, Gök, Hasan, Temizhan, Ahmet, Tokaç, Mehmet, Karabag, Turgut
• Format: Article
• Language: English
• Subjects: Atrial fibrillation; Atrial Fibrillation - diagnosis; Atrial Fibrillation - etiology; Biological and medical sciences; Cardiac dysrhythmias; Cardiology. Vascular system; Care and treatment; Case-Control Studies; Complications and side effects; Echocardiography; Electrocardiography; Female; Heart; Heart diseases; Heart Diseases - complications; Humans; Male; Medical sciences; Middle Aged; Predictive Value of Tests; Reproducibility of Results; Risk Assessment; Risk factors; Sensitivity and Specificity
• ISSN: 0003-3197; 1940-1574
• DOI: 10.1177/000331970305400412

This study was planned to investigate the parameters detecting risk of developing atrial fibril lation (AF) in patients with sinus rhythm with structural heart disease. Forty-five patients with AF and 37 patients without AF but with structural heart disease (Group I) were included in this study. Thirty-eight patients (Group II) had successfully undergone medically or electri cally cardioversion after transesophageal echocardiography. The restoration of sinus rhythm could not be achieved in 7 patients who were excluded from this study. After providing sinus rhythm, amiodarone was given orally to the patients to prevent recurrences. Left ventricular ejection fraction (LVEF) was calculated and left atrial diameter (LAD) was measured by echocardiography in group I and in group II after cardioversion. A 12-lead electrocardiography (ECG) was simultaneously obtained from all the patients. In these ECG recordings, maximum P wave duration (P max), minimum P wave duration (P min), and P wave dispersion (P disper sion) were calculated. P dispersion was expressed as "P max-P min." Also, the highest P wave voltage is expressed as P amplitude maximum (P amp max), the lowest P wave as P amplitude minimum (P amp min), and P amplitude dispersion (P amp dispersion) was calculated as the difference of both. In univariate analysis, P max, P dispersion, P amp max, P amp dispersion, LAD, LVEF, and old age were significant predictors of chronic AF (p < 0.001, p < 0.01, p < 0.01, p < 0.01, p = 0.003, p = 0.02, and p = 0.01, respectively). However, in multivariate analysis, P max and LAD were independent predictors of chronic AF in patients with structural heart disease (r = 0.39, p < 0.05; r = 0.34; p < 0.05, respectively). In conclusion, in estimating the risk of devel oping chronic AF, P max and LAD are predictive parameters in patients with sinus rhythm with structural heart disease.