Introduction:

Kidney and urinary tract´s malformations represent among 20 and 30% of all malformations known in humans.

Objective:

To identify during pregnancy family pathological history and diseases associated to the onset of renal congenital malformations.

Methods:

Prospective, descriptive, cross-sectional study carried out to 672 children with normal prenatal ultrasound whom were born from July, 2014 to June 2015 in Santa Clara province. All children during the medical consultation had a detailed physical examination and previous informed concent; it was applied also a survey and the epidemiologic variables, family history of renal diseases, morbility of the mother during pregnancy were recorded, and it was made a renal ultrasound to identify sonographic alterations suggesting any kind of anomaly in the renal development.

Results:

In 40 patients (5,95%), it was detected any sonographic alteration. 27,50% were children of mothers that presented any disease during pregnancy. High glycemia affected the 10% of mothers of children with anomalies in the renal development, followed by low maternal weight (7,5%). The fact of presenting a family pathological history of renal disease implied a risk of 1,88% and the risk was of 5,08% in the obstructive kind of diseases.

Conlusions:

Sonographic alterations suggesting renal congenital malformations are more frequent in newborns whose mothers had high concentrations of glycemia and low weight during pregnancy. Children with family history of renal malformations have higher risk of presenting an anomaly of the renal development.

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