Inflatable Penile Prostheses Implantation: Does Antibiotic Exposure Matter?

Area of Science:

• Urology
• Biomaterials Science
• Infectious Disease

Background:

• Inflatable penile prosthesis (IPP) infections, though uncommon, lead to significant patient morbidity and increased healthcare expenses.
• Preventing these infections is crucial for improving patient outcomes and reducing treatment costs.

Purpose of the Study:

• To enhance the bactericidal effect of IPP tubing material against common bacterial pathogens.
• To determine if this enhanced bactericidal effect is dependent on the duration of antibiotic exposure.

Main Methods:

• A modified disk diffusion assay was employed to evaluate the zones of inhibition against *Escherichia coli*, *Proteus mirabilis*, *Staphylococcus aureus*, and *Staphylococcus epidermidis*.
• IPP tubing material was immersed in various antibiotics (gentamycin, ampicillin, tetracycline, kanamycin, erythromycin, ciprofloxacin) and exposed to ampicillin or ciprofloxacin for different time intervals (30 seconds to 60 minutes).

Main Results:

• IPP tubing demonstrated greater efficacy against Gram-positive bacteria (*S. aureus*, *S. epidermidis*) compared to Gram-negative bacteria (*E. coli*, *P. mirabilis*).
• Exposure to ampicillin or ciprofloxacin significantly increased the bactericidal effect of the IPP tubing material against both Gram-positive and Gram-negative bacteria.
• The observed antimicrobial effect was dependent on the duration of antibiotic exposure.

Conclusions:

• Directly exposing inflatable penile prostheses (IPP) to specific antimicrobial agents before implantation can augment the material's bactericidal properties.
• This pre-implantation antimicrobial treatment holds potential for decreasing the incidence of IPP infections.
• Further in vitro studies are warranted to explore strain-specific effects and optimize treatment protocols.