Accuracy of Urinary Urea Nitrogen for Predicting Total Urinary Nitrogen in Thermally Injured Patients,
ARMY INST OF SURGICAL RESEARCH FORT SAMHOUSTON TX
Pagination or Media Count:
Estimations of total urinary nitrogen from measured urinary urea nitrogen are commonly used in calculating nitrogen balance. Recently published studies suggest the urinary urea nitrogentotal urinary nitrogen relationship is in constant and total urinary nitrogen must be directly measured in burned patients. This study addresses the relationship of urinary urea nitrogen to total urinary nitrogen after thermal injury. Two hundred random 24-hour urine collections obtained from 45 thermally injured patients mean bum size 59 28, mean age 40.5 - 17.2 years between 1 and 354 days postburn were analyzed for total urinary nitrogen and urinary urea nitrogen. Regression analysis relating total urinary nitrogen to estimated total urinary nitrogen urinary urea nitrogen x 1.25 revealed a linear relationship r .936, P .001.
- Anatomy and Physiology
- Medicine and Medical Research