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P‐wave duration and P‐wave dispersion in patients with dilated cardiomyopathy
Author(s) -
Senen Kubilay,
Turhan Hasan,
Erbay Ali Riza,
Basar Nurcan,
Yasar Ayse Saatci,
Sahin Onur,
Yetkin Ertan
Publication year - 2004
Publication title -
european journal of heart failure
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.149
H-Index - 133
eISSN - 1879-0844
pISSN - 1388-9842
DOI - 10.1016/j.ejheart.2003.12.020
Subject(s) - medicine , dilated cardiomyopathy , cardiology , ejection fraction , cardiomyopathy , heart failure , diastole , blood pressure
Background: P‐wave dispersion (PWD) has been reported to be associated with inhomogeneous and discontinuous propagation of sinus impulses. In the present study, we aimed to investigate PWD in patients with dilated cardiomyopathy. Method: The study population consisted of 72 patients with dilated cardiomyopathy and 72 healthy control subjects. Left atrial diameter, left ventricular end‐diastolic and end‐systolic diameters and left ventricular ejection fraction of all patients and control subjects were measured by means of transthoracic echocardiography. Maximum P‐wave duration (Pmaximum) and minimum P‐wave duration (Pminimum) were measured from the 12‐lead surface electrocardiogram. PWD was calculated as the difference between Pmaximum and Pminimum. Results: Pmaximum and PWD of patients with dilated cardiomyopathy were significantly higher than those of control subjects (Pmaximum: 126±12 ms vs. 116±10 ms, PWD: 47±6 ms vs. 38±7 ms, respectively, P <0.001 for all). However, there was no statistically significant difference between patient group and control group regarding Pminimum (79±7 ms vs. 78±6 ms, respectively, P =0.27). Left atrial diameter was significantly higher in patients with dilated cardiomyopathy compared to control subjects (4.51±0.62 cm vs. 3.60±0.43 cm, respectively, P <0.001). Left ventricular ejection fraction was found to be significantly lower in patients with dilated cardiomyopathy compared to control subjects (33±5% vs. 63±7%, respectively, P <0.001). Conclusion: PWD was found to be significantly higher in patients with dilated cardiomyopathy than in healthy control subjects.