Abstract
Collaboration between clinicians and microbiologists revealed that many patients with subsequently proven urinary tract infection (UTI) present with symptoms suggestive of chest infection. A retrospective analysis was performed on patients over 50 years old with community acquired bacteraemic UTI proven by blood cultures. The main presenting features were confusion (30%), cough (27%), dyspnoea (28%) and new urinary symptoms (20%). The initial clinical diagnosis was UTI in 43% and chest infection in 24%. Chest infection was diagnosed more often in those over 70 years old than those aged 50-70 years old (chi 2 = 7.2, p = 0.007). The majority had pyuria but less than half of the urine samples arrived in the laboratory on the day of admission, fewer from the older patients than the younger (chi 2 = 2.57, p = 0.10). These results demonstrate that UTI frequently presents with respiratory features and that the diagnosis of UTI is often delayed. Sampling the urine with a catheter may be justified to enable diagnosis on the day of admission.
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