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Test of antibiotic resistance of bacteria in biofilm for the treatment of prosthetic infections; a prospective randomized study

Evaluation of the clinical implementation of biofilm susceptibility to antibiotics using Minimum Biofilm Eradication Concentration (MBEC) in addition to Minimum Inhibitory Concentration (MIC) to guide the treatment of periprosthetic joint infections; a prospective randomized clinical trial

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2020-003444-80-SE
Enrollment
64
Registered
2020-08-31
Start date
2020-11-17
Completion date
Unknown
Last updated
2024-10-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Periprosthetic hip or knee joint infections

Interventions

Trade Name: Rimactan Pharmaceutical Form: Capsule INN or Proposed INN: RIFAMPICIN CAS Number: 13292-46-1 Trade Name: Fucidin Pharmaceutical Form: Tablet INN or Proposed INN: FUSIDIC ACID Other descri

Sponsors

Sahlgrenska University Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: To be included in the study, subjects must meet the following criteria: • The subject has given written consent to participate in the study. • The subject suffers a first-time staphylococcal PJI in hip or knee according to Musculoskeletal Infection Society (MSIS) definitions • The subject has surgical treatment according to the DAIR principle • The PJI is mono-microbial • The subject undergoes 14 days of intravenous treatment with either cloxacillin or vancomycin • The subject receives standardized administration of local antibiotics Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 32 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 32

Exclusion criteria

Exclusion criteria: Subjects must not be included in the study if any of the following criteria are met: • experience allergy/previous toxic event/unacceptable drug interaction to most effective antibiotic combination according to either MIC or MBEC • experience severe drug interactions to MBEC-guided compound • pregnancy • woman of childbearing potential (WOCBP) A woman is considered of childbearing potential, i.e. fertile, following menarche and until becoming post-menopausal unless permanently sterile. Permanent sterilisation methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy. A postmenopausal state is defined as no menses for 12 months without an alternative medical cause. A high follicle stimulating hormone (FSH) level in the postmenopausal range may be used to confirm a post-menopausal state in women not using hormonal contraception or hormonal replacement therapy. However, in the absence of 12 months of amenorrhea, a single FSH measurement is insufficient.

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary objective of this prospective study is to compare proportions of antimicrobial regimens other than 1st-line treatment that will be administered after the guidance of MIC-testing versus MIC- and MBEC-testing combined.;Secondary Objective: The secondary objectives are: -to evaluate how treatment choice affects infection resolution, drug tolerability and resistance patterns of potential relapse strains. -to investigate the pathogenesis of PJI through the characterization of the virulence properties (e.g. biofilm formation ability, biofilm antimicrobial resistance, and production of toxins) carried by the clinical strains of Staphylococcus spp. isolated from PJI.;Primary end point(s): Proportions of antimicrobial regimens other than standard of care through application of proposed MBEC-algorithm.;Timepoint(s) of evaluation of this end point: 2 weeks.

Secondary

MeasureTime frame
Secondary end point(s): 12 months follow-up for repeat procedure, relapse or reinfection, according to MSIS-criteria of PJI - PROMs - Time to revision: a shorter time could potentially indicate that the right decision is taken at an earlier stage - Resource consumption - Emerging bacterial resistance to any antimicrobial used in the study determined through biopsy cultures at relapse surgery;Timepoint(s) of evaluation of this end point: 12 months

Countries

Sweden

Contacts

Public ContactStudy coordinator

Sahlgrenska University Hospital

ola.rolfson@vgregion.se460313430852

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026