Tamaño renal, presión arterial, microalbuminuria y filtración glomerular son aconsejables controlar en el seguimiento de niños nacidos prematuros

  • Luis Ignacio Rodríguez Centro Infantil del Riñón, San Miguel de Tucumán, Tucumán, Argentina
  • Susana Cecilia Miceli Cátedra Medicina Infanto-Juvenil, Facultad de Medicina, Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
  • Marcela D’Urso Villar Cátedra Bioestadística, Facultad de Medicina, Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán, Argentina
  • Mariana Maurizi Servicio de Ecografía, Hospital del Niño Jesús, San Miguel de Tucumán, Tucumán, Argentina
  • María Emilia Caram Servicio de Seguimiento de Niños Prematuros, Hospital del Niño Jesús, San Miguel de Tucumán, Tucumán, Argentina
  • María Zaira Pérez Servicio de Seguimiento de Niños Prematuros, Hospital del Niño Jesús, San Miguel de Tucumán, Tucumán, Argentina
  • María Inés Martinini Servicio Lactancia Materna, Maternidad Nuestra Señora de la Merced, San Miguel de Tucumán, Tucumán, Argentina
Keywords: premature, arterial hypertension, kidney measurements, renal function, microalbuminuria

Abstract

Introduction: Children born prematurely grow up with risk of kidney damage. Objectives: To study blood pressure, glomerular filtration, microalbuminuria/creatininuria ratio and kidney size in preterm infants to determine the prevalence of high blood pressure and alterations in other variables. To associate kidney size with the variables studied. Methods:  Prospective, cross-sectional study.  Population: preterm infants and a group of full term newborns (controls). Period: July/2017 to July/2018. Inclusion: outpatient premature infants with gestational age ≤ 32 weeks, birth weight ≤ 1,500 g, ≥ 1 to ≤ 7 years. The following factors were studied: perinatal data, blood pressure and renal function at the time of ultrasound control. Length, antero-posterior and transverse diameters were measured in both kidneys through sonography. Relative length, absolute volume, relative volume and predictive volume were calculated. A descriptive and inferential analysis was carried out. Results: 43 premature infants and 21 controls were studied, their mean age being 4.42 and 3.9 years, respectively. Systolic hypertension was observed in 21% of cases and diastolic hypertension in 37%; altered glomerular filtration was found in 74%; altered microalbuminuria/creatinine ratio was determined in 80%. The mean length was shorter than controls in 53% of preterm infants and it was lower than the Rosenbaum mean values in 86%. The mean volume was lower than controls in 58% of preterm infant as well as the predictive volume in 45% of them. Conclusion: Children born prematurely, aged between 1 and 7, presented a high frequency of high blood pressure, glomerular filtration and pathological microalbuminuria/creatinine ratio, as well as lengths and volumes different from the reference values.  These could be considered risk factors for kidney health in preterm infants.

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Published
2021-03-25
How to Cite
1.
Rodríguez LI, Miceli SC, D’Urso Villar M, Maurizi M, Caram ME, Pérez MZ, Martinini MI. Tamaño renal, presión arterial, microalbuminuria y filtración glomerular son aconsejables controlar en el seguimiento de niños nacidos prematuros. Rev Nefrol Dial Traspl. [Internet]. 2021Mar.25 [cited 2024Dec.27];41(1):9-22. Available from: http://vps-1689312-x.dattaweb.com/index.php/rndt/article/view/610
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