2012, Number 4
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ABSTRACTIntroduction and objective: Atrial fibrillation is the paradigm of atrial electrical heterogeneity. The prolon-gation of intra and interatrial conduction and inho-mogeneous propagation of electrical impulses are elec-trophysiological characteristics in paroxysmal atrial fibrillation. Obesity is a potential risk factor for atrial fibrillation. There are some reports about higher values of P wave dispersion in obese women. The aim was to determine the relationship between P wave dispersion and body weight in normotensive and hypertensive children between 8 and 11 years old. Methods: 358 children from a total of 543 were studied. Those whose parents did not want them to participate in the study and those who had known congenital diseases were excluded. A 12-lead surface ECG and 4 blood pressure measurements were conducted. Maximum and minimum P values were measured and P wave dispersion in the electrocardiogram was calculated. Other variables such as body weight were also obtained. Results: The difference between mean values for P-wave dispersion between normotensive and hypertensive patients was 31.85 ms vs 39.74 ms, respectively, p ‹ 0.001. There was an increased dispersion of P wave with weight gain, r=0.18 p=0.05. Conclusions: In hypertensive patients, P-wave dispersion and weight showed a significant correlation since childhood. There are significant differences between P wave dispersion values of the electrocardiogram between normotensive and hypertensive populations since childhood.
Dilaveris P, Stefanadis C. P wave dispersion: A va-luable non-invasive marker of vulnerability to atrial fibrillation. Proceedings of the 2nd ISHNE Atrial Fibrillation Worldwide Internet Symposium; 2007 April 1-30. London: St. Jude Medical; 2007. Dispo-nible en: http://af-symposium.grupoakros.com.ar/2007/lectures/ing_dilaveris_polychronis.pdf