Diagnostic Value of Urinary Microalbumin Level in Postpartum Acute Kidney Injury

Background: we aimed to explore the diagnostic value of urinary microalbumin (malb) level in postpartum acute kidney injury. methods: a total of 127 maternity patients were selected from december 2013 to january in 2016 in binzhou central hospital, binzhou, shandong, china and divided into two groups: the kidney injury and normal kidney group. the dynamic changes and diagnostic value of urine microprotein in postpartum acute kidney injury were analyzed. results: the postpartum mean arterial pressure of maternity patients in the kidney injury group was 104.3 ± 11.6 mmhg, which was significantly higher than that of the normal kidney group (p<0.05). the mean age of the kidney injury group was 32.3 ± 11.6 years, which was significantly higher than that of the normal kidney group (p=0.006). in the kidney injury group, the postpartum glomerular filtration rate (gfr) was 78.4 ± 11.5 ml/min, which was significantly lower than the normal group (p=0.001), and urinary microalbumin was 2.87 ± 1.24 mg/mmol·cr. the difference was statistically significant (p=0.002). malb/gfr, cr, urinary malb, and gfr were the independent risk factors of postpartum acute kidney injury. the area under the roc curve for malb/gfr was 0.759, whereas the area under the roc curve for cr was 0.681, which was smaller (p = 0.042). the area under the roc curve of malb was 0.785 (p=0.027), which was close to the area under the roc curve of malb/gfr. conclusion: urinary malb test is noninvasive and has high diagnostic value for postpartum kidney injury.