When should a urine specimen be examined after removal of a urinary catheter?

Catheter urine specimens (CSUs) were taken from 72 patients with short term urinary catheters just before the catheter was removed. The patients were assessed to see whether this specimen influenced their management. Their subsequent urinary symptoms were followed, and daily mid stream urines (MSUs) compared with the initial CSU to see if the initial CSU gave an accurate indication of the likelihood of infection when the catheter was removed. Only one patient was given antimicrobial therapy as a consequence of the initial CSU, and 18 patients (25 per cent) showed significant growth on the CSU but no growth or a non-significant growth on subsequent MSUs. It would appear that CSUs taken prior to the removal of urinary catheters are of limited value.