Treat women with severe/or ≥ 3 symptoms; 

Women <65 years with mild/or ≤ 2 symptoms AND urine NOT cloudy - 97% negative predictive value -

Do not treat unless other risk factors for infection. If cloudy urine use dipstick to guide treatment. Nitrite plus blood or leucocytes has 92% positive predictive value; nitrite, leucocytes, blood all negative 76% Negative Predictive Value (NPV).

Consider a back-up / delayed antibiotic option along with analgesia

Men <65 years: Consider prostatitis and send pre-treatment MSU OR if symptoms mild/non-specific, use negative dipstick to exclude UTI.

Men >65 years: Treat if fever 380C or above or 1.50C above base in 12 hours and > 1 other symptom.

Always safety net.

Nitrofurantoin if GFR over 45ml/min; GFR 30-45: only use if resistance & no alternative.

 

People > 65 years: do not treat asymptomatic bacteriuria; it is common and NOT associated with increased morbidity. Treatment is not beneficial.

Catheter in situ: antibiotics will not eradicate asymptomatic bacteriuria; only treat if systemically unwell or pyelonephritis likely. Do not routinely use prophylactic antibiotics for catheter changes.

Drug details

Nitrofurantoin

50mg immediate release capsules QDS

OR

100mg MR capsules - only if above preparation is unavailable

Women all ages 3 days

Men 7 days

Trimethoprim

200mg BD

Women all ages 3 days

Men 7 days

Nitrofurantoin and Trimethoprim are preferred agents to be used 1st and 2nd line.  

The following agents are to be used third line where there are ongoing clinical features of LUTI despite nitrofurantoin and trimethoprim or alternative 1st/2nd line option where nitrofurantoin or trimethoprim aren't suitable (e.g. CKD, hypersensitivity) 

Pivmecillinam 

 400mg stat then 200mg TDS

Women all ages 3 days

Men 7 days

Fosfomycin

3g stat

Female single dose

Male two doses 3 days apart

If multidrug resistant organism isolated on culture e.g. without oral treatment options and ongoing/deteriorating symptoms but not requiring hospital admission - consider discussion with OPAT service for potential outpatient IV antibiotic therapy