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Revista Peruana de Ginecología y Obstetricia

versión On-line ISSN 2304-5132

Resumen

GIL GUEVARA, Enrique; DIAZ, Ramiro  y  BERMUDEZ, Carlos. Prognostic value of fetal urine beta2 microglobuline in vesicoamniotic shunting therapy for fetal obstructive uropathy. Rev. peru. ginecol. obstet. [online]. 2018, vol.64, n.4, pp.631-638. ISSN 2304-5132.  http://dx.doi.org/10.31403/rpgo.v64i2133.

Introduction. Fetal obstructive uropathy can be treated early in pregnancy by intrauterine vesicoamniotic shunting, immediately after diagnosis by ultrasound, in specific cases with a favorable prognosis in renal function using fetal urine beta2 microglobulin. Objective: To determine the changes of beta-2 microglobulin in consecutive samples of fetal urine in 48 - 72 hour-intervals in fetuses with obstructive uropathy at 16 weeks of gestation. Methods: We designed a descriptive and longitudinal study, including 15 pregnant women whose fetuses were diagnosed with obstructive uropathy without chromosomal abnormalities, performing vesicocentesis for urinary biometry. Results: Beta-2 microglobulin values were higher than 4 mg/dL in the first vesicocentesis of all 15 cases and decreased to less than 4 mg/dL in 7 cases (46.6%) after the second vesicocentesis. In all cases when beta-2 microglobulin was less than 8 mg/dL in the first vesicocentesis, there was a decrease to nearly 4 mg/dL (maximum 4.3 mg/dL) in the second vesicocentesis. Conclusions: Vesicoamniotic shunting should be performed in all cases of fetal obstructive uropathy when the values of beta-2 microglobulin are less than 8 mg/dL in the first vesicocentesis.

Palabras clave : Fetal obstructive uropathy; Beta 2 macroglobulin; Vesicoamniotic shunt therapy.

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