Abstract

The aim of the study was to determine the rate of inadequate empirical antimicrobial treatment in older nursing home residents with bacteremic urinary tract infection and its influence on prognosis. We carried out a multicentric prospective observational study in five Spanish hospitals. Patients aged >65 years with pyelonephritis or urinary sepsis with bacteremia were included. Clinical characteristics, the percentage of inadequate empirical antibiotic treatment, length of hospital stay and mortality were evaluated. A total of 181 patients, 54.7% women, were included in the study, and 35.9% of the patients came from nursing homes. These patients had higher percentages of ultimately or rapidly fatal disease (92.3% vs 53.4%; P < 0.001), were older (83.15 ± 6.97 years vs 79.34 ± 7.25 years; P = 0.001) and had higher Acute Physiology And Chronic Health Evaluation II (28.38 ± 8.57 vs 19.83 ± 5.88). The percentage of extended-spectrum beta-lactamases was higher in patients from nursing homes (30.6% vs 16.3%; P = 0.045), as was the percentage of inadequate empirical antibiotic treatment (40% vs 20.7%; P = 0.005). Length of hospital stay was longer (10.82 ± 3.62 days vs 9.04 ± 4.88 days; P < 0.001). However, 30-day mortality was not related to nursing home by multivariate analysis (OR 1.905, 95% CI 0.563-6.446; P = 0.300). Nursing home patients with bacteremic urinary tract infections had a higher rate of extended-spectrum beta-lactamase-producing enterobacteriacea and inadequate empirical antimicrobial treatment. Clinicians should consider these findings and avoid inappropriate antimicrobial agents for empirical treatment. Geriatr Gerontol Int 2019; 19: 1112-1117.

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