Work out catheter days risk instantly with clear inputs, formula shown and shareable results.
Compounds the daily risk of catheter-associated bacteriuria across the days in situ, which is why catheter duration is the dominant modifiable risk factor.
Cumulative risk
Cumulative risk = 1 - (1 - daily risk)^catheter days; the commonly quoted daily bacteriuria rate is 3 to 7%
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Bacteriuria accumulates at a few percent per day, so almost all catheters become colonised within a month.
Avoiding insertion and removing the catheter as soon as it is no longer needed.