title: [The correlation between urine urea nitrogen and total urine nitrogen output in perioperative patients].
abstract: Daily urine urea nitrogen (UUN) and total urine nitrogen output (TUNO) concentrations were measured in 19 patients undergoing G-I surgery during the perioperative period of 114 days. The results showed that there was a strong correlation between UUN and TUNO in statistic regression analysis. A formula is worked out TUNO = UUN + 0.7 which is of great value in estimating the nitrogen balance of TPN patients.
authors.affiliation: Peking Union Medical College, Beijing.
authors.forename: S Y
authors.initials: SY
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000714:Anastomosis, Surgical; D005260:Female; D005743:Gastrectomy; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D009584:Nitrogen / Q000652:urine*; D010289:Parenteral Nutrition, Total; D012044:Regression Analysis; D014508:Urea / Q000652:urine*
chemical_list: D014508:Urea; D009584:Nitrogen