[Antibiotic prophylaxis in urodynamics: Clinical practice guidelines using a formal consensus method]

The aim of this work was to issue clinical practice guidelines on antibiotic prophylaxis in urodynamics (urodynamic studies, UDS).

Clinical practice guidelines were provided using a formal consensus method. Guidelines proposals were drew up by a multidisciplinary experts group (pilot group = steering group), then rated by a panel of 12 experts (rating group) using a formal consensus method, and then peer reviewed by a reviewing/reading group of experts (different from the rating group).

Urine (bacterial) culture with antimicrobial susceptibility testing is recommended for all patients before UDS (strong agreement). In patients with no neurologic disease, the risk factors for tract urinary infection (UTI) after UDS are age > 70 years, recurrent UTI, and post-void residual volume > 100ml. In patients with neurologic disease, the risk factors for UTI after UDS are recurrent UTI, vesicoureteral reflux, and intermicturition pressure > 40cmH₂O. If the urine culture is negative before UDS and there is no risk factor for UTI, antibiotic prophylaxis is not recommended (Strong agreement). If the urine culture is negative before UDS, but there are one or more risk factors for UTI, antibiotic prophylaxis is optional. If antibiotic prophylaxis is initiated, a single oral dose (3g) of fosfomycin-tromethamine two hours before UDS is recommended (Strong agreement). If there is bacterial colonization on UCB before UDS, antibiotic therapy is optional (Undecided). If prescribed, it should be adapted to the antimicrobial susceptibility of the identified bacterium or bacteria, started the day before and stopped after UDS (except for fosfomycin-tromethamine: a single dose the day before UDS is necessary and sufficient) (Strong agreement). In the event of UTI before UDS, the UTI should be treated and UDS postponed (Strong agreement). The proposed recommendations should not be changed for patients with a hip or knee replacement (Strong agreement). No antibiotic prophylaxis of bacterial endocarditis is necessary, including in high-risk patients with valvular heart disease (Strong agreement).

These new guidelines should help to harmonize clinical practice and limit exposure to antibiotics.

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