74309d7132 Spot urine sodium levels greater than 40 mEq/L suggest renal tubular injury and if prolonged can lead to pathologic POD.14A simple method to estimate urine osmolality, if an automated method is not available, is to assess the urine specific gravity. Recommendations were graded based on their level of evidence in accordance with the Canadian Task Force on Preventive Health Care.1 Level I evidence originated from properly conducted randomized controlled trials, systematic reviews, or meta-analyses. 1997;72(10):9516. Diagnosis, characterization and management of postobstructive diuresis. The incidence of POD is unclear but estimates suggest 0.5% to 52% of patients will experience POD after relief of obstruction.10 It generally occurs after relieving BOO, bilateral ureteric obstruction, or unilateral ureteric obstruction in a solitary kidney.11 Diuresis is a normal physiologic response to help eliminate excess volume and solutes accumulated during the prolonged obstruction. [PubMed]21. Urine production exceeding 200 mL per hour for 2 consecutive hours or producing greater than 3 L of urine in 24 hours is diagnostic of POD (level III evidence).14,19 Physiologic POD is self-limiting and generally lasts 24 hours.
1985;57(1):15. This is consistent with physiologic POD and is generally self-limiting. Trop Doct. All relevant articles providing information and evidence on urinary retention and postobstructive diuresis (POD) epidemiology, risk factors, diagnosis, and management were considered for inclusion. These individuals should have their urine output recorded every 2 hours and vital signs checked every 6 to 8 hours. A specific gravity of 1.020 demonstrates that the kidneys are concentrating the urine and POD has resolved or has nearly resolved. References1. Nyman MA, Schwenk NM, Silverstein MD.