Asymptomatic Microscopic Hematuria in Inpatient Nonsurgical Adults.

This study sought to determine the proportion of nonsurgical inpatients with asymptomatic microscopic hematuria (AMH) who qualified for urologic investigation according to consensus guidelines. The study population included all patients acutely admitted to the internal medicine departments of Israeli regional hospitals between 2014 and 2017. Of 29,086 consecutive admissions, 10,116 (34.8%) underwent dipstick urinalysis and 8,389 (28.8%) underwent reflex microscopic urinalysis. After the exclusion of patients with a urethral catheter or a positive urine culture, 2,206 had 3 or more RBCs per high-power field, and as many as 2,052 (7.1% of the entire cohort and 24.4% of all patients undergoing microscopic urinalysis) met the criteria for a urologic workup. We conclude that according to the consensus guidelines, an unreasonably high proportion of hospitalized nonsurgical patients would be referred for a urologic workup of uncertain clinical utility because of an incidental AMH finding.

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