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Estimation of Nitrogen Balance Based on a Six‐Hour Urine Collection in Infants
Author(s) -
Lopez Ana Mari,
Wolfsdorf Jack,
Raszynski Andre,
ContijochSerrano Virginia
Publication year - 1986
Publication title -
journal of parenteral and enteral nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.935
H-Index - 98
eISSN - 1941-2444
pISSN - 0148-6071
DOI - 10.1177/0148607186010005517
Subject(s) - urine , medicine , urinary system , nitrogen balance , urine collection device , enteral administration , renal function , foley , blood urea nitrogen , parenteral nutrition , chemistry , surgery , nitrogen , organic chemistry
The accuracy of a 6‐hr vs a 24‐hr urine collection for the determination of urinary urea nitrogen was studied in 15 infants. Patient's age ranged from 2 weeks to 3 yr, encompassing a wide variety of diagnoses. All patients had normal renal function at the time of the study. Participants had indwelling foley catheters throughout the study. Urine specimens were collected over a continuous 24‐hr period. Aliquots obtained from urine collected over 0 to 6 hr and the total urine collection were analyzed utilizing the urease enzymatic method in the Astra. Statistical analysis was performed comparing the actual 24‐hr determination to the estimation based on the 6‐hr collection, utilizing linear regression. The analysis of data produced a highly significant correlation ( r = 0.904, p < 0.0001). When a 24‐hr urine collection is not possible, a 6‐hr collection is a useful alternative for the calculation of nitrogen balance in infants. ( Journal of Parenteral and Enteral Nutrition 10: 517–518, 1986)