[THE ASSOCIATION BETWEEN URINE RESIDUAL VOLUME AT ADMISSION AND THE OUTCOMES OF HOSPITALIZED ELDERLY MEN WITH URINARY TRACT INFECTION].

ABSTRACT

BACKGROUND: Early assessment of urine residual volume (URV) at admission is essential in elderly men with urinary tract infection (UTI). Large URV might predispose these patients to subsequent complications; nevertheless, only scarce data are available concerning the impact of URV on the outcomes of elderly men with UTI. OBJECTIVES: To determine the impact of URV on the outcomes of elderly men hospitalized with UTI, including  bacteremia rates, length of hospital stay, short and long-term mortality. METHODS: Eligible subjects were hospitalized men aged ≥ 65 years with a discharge diagnosis of UTI whose URV was assessed at presentation. The clinical parameters and outcomes of patients with urinary retention (≥400ml) and ones without (URV ≤ 400ml) were compared. RESULTS: Eighty out of 184 patients (43.5%) had urinary retention while 104 (56.5%) did not. The two groups didn't differ in their demographic and clinical parameters. Large URV at admission was significantly associated with increased 30-day mortality [OR=4 (95% CI 1.15-14), p=0.03] without significant impact on bacteremia rates and length of hospitalization. CONCLUSIONS: Large URV at admission in elderly men with UTI is associated with increased 30-day mortality. Further prospective studies with different URV cutoffs are needed to explore this association and its pathophysiology.