Sodium Glycerophosphate Use in Parenteral Nutrition Improves Mineral Metabolism in Extremely Low Birth Weight Infants.

OBJECTIVE: To evaluate the clinical effect of sodium glycerophosphate (NaGP) in parenteral nutrition solutions on mineral metabolism in extremely low birth weight (ELBW) infants. STUDY DESIGN: NaGP was introduced for use in place of potassium phosphate (K3PO4) in January 2018; this retrospective cohort study included 95 ELBW infants treated with K3PO4 between January 2015 and December 2017 and 77 infants treated with NaGP between August 2018 and January 2021. Mineral intake over the first 14 days; changes in serum calcium, phosphorus, sodium, and alkaline phosphatase (ALP) levels over the first 1-3 months; and the rates of electrolyte imbalance and clinical morbidity were compared. High-risk infants who had nil per os (NPO) status for >14 days and prolonged parenteral nutrition exposure were further analyzed as a subgroup. RESULTS: The use of NaGP instead of K3PO4 significantly increased Ca and P intake, but intakes remained below the recommended range (Ca, 64-140 mg/kg/day; P, 50-108 mg/kg/day). Compared with levels in the K3PO4 group, the NaGP group had significantly higher serum Ca and P levels after day 14 and lower ALP levels after day 56. In the subgroup analysis, the NaGP group had significantly lower incidences of hypophosphatemia, hyponatremia, bronchopulmonary dysplasia, and ALP >500 IU/L. CONCLUSIONS: Although the administration of NaGP instead of K3PO4 in parenteral nutrition regimens still did not provide adequate Ca and P intake for ELBW infants, higher intake significantly improved serum Ca and P levels, especially in ELBW infants with prolonged parenteral nutrition exposure.

Enfermedad metabólica ósea del prematuro: informe de un caso y revisión de la literatura / Metabolic bone disease of prematurity: Case report and review

Se comunica el caso de una paciente con enfermedad metabólica ósea del prematuro, que nació luego de 26 semanas de gestación y de 62 días de vida extrauterina, que estuvo internada desde su nacimiento en un hospital de 3er nivel en la ciudad de Oruro, donde estuvo conectada a presión positiva nasal (CPAP) por varios días, además de recibir tratamiento antibiótico con varios esquemas de amplio espectro por haber cursado con sepsis neonatal y enterocolitis necrosante (ECN) grado II; además recibió metilxantinas por presentar periodos de apnea y hasta su ingreso a nuestro hospital permanecía dependiente de oxígeno, con muy poca ganancia de peso e hipoactividad. Fue transferida para valoración oftalmológica por sospecha de retinopatía del prematuro. A su ingreso se hizo un examen clínico minucioso y se realizaron varios exámenes de laboratorio y gabinete con los cuales se demostró una osteopenia del prematuro, que respondió en forma favorable al tratamiento.

We describe a 26 weeks old premature baby with metabolic bone disease. She was transferred to our hospital at 62 days of age for ophthalmologic evaluation. She was treated in the primary hospital with CPAP, different antibiotics for sepsis and NEC. She also received methylxanthines for neonatal apnea. When she arrived to our hospital she was oxygen dependent and with little weight increase. During her stay at our neonatal unit we performed a complete physical exam and several diagnostic tests, showing metabolic bone disease which favorable response to specific treatment.