elibet chavez2026-03-222026-03-22201310.5546/aap.2013.eng.206https://doi.org/10.5546/aap.2013.eng.206https://andeanlibrary.org/handle/123456789/51209Citaciones: 4Introduction. The study of arterial hypertension risk factors in children guarantees the establishment of health policies to avoid complications associated with this illness in the future. The highest values of P-wave dispersion during sinus rhythm are pointed as predictors of atrial fibrillation in adulthood since there is an association between arterial hypertension, P-wave dispersion and left ventricular hypertrophy. The aim of this study was to determine the relationship between blood pressure, left ventricular mass index and P-wave dispersion in the pediatric population. Population and methods. In the frame of the PROCDEC II project, children from 8 to 11 years old, without known heart conditions were studied. Arterial blood pressure was measured in all the children; a 12-lead surface ECG and an echocardiogram were done as well. Results. Left ventricular mass index mean values for normotensive (25.21 5.96 g/m 2 ) and hypertensive (30.38 7.39 g/m 2 ) children showed significant differences (p= 0.000). The mean value of the left atrial area was significantly different (p= 0.000) when comparing prehypertensive (10.98 2.23 cm2) and hypertensive (12.21 1.27 cm 2 ) children to normotensive ones (10.66 2.38 cm 2 ). The correlation of P-wave dispersion and the left ventricular mass index showed an r= 0.87 and p= 0.000. Conclusions. P-wave dispersion is increased in pre-and hypertensive children compared to normotensive ones. A dependence of the P-wave dispersion of the left ventricular mass index was found in hypertensive children.esCardiologyBlood pressureIndex (typography)MedicineInternal medicineDispersion (optics)Pressure wavearticle