Testosterone Levels and Cutibacterium
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Arthroplasty, Replacement, Shoulder. Basic parameters: 18 years — 89 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- United States
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Association Between Serum Testosterone Levels and Cutibacterium Culture Positivity During Shoulder Arthroplasty
Overview
Phase 1: In 51 patients undergoing shoulder arthroplasties, total serum testosterone, free testosterone and sex hormone binding globulin levels obtained in the clinic before surgery were correlated with the levels of Cutibacterium on the skin in clinic, in the operating room prior to surgery, and in the skin incision. Phase 2: The investigators wish to determine if preoperative serum testosterone levels are associated with risk for shoulder PJI (periprosthetic joint infection) in patients undergoing primary shoulder arthroplasty. Also to determine if preoperative serum testosterone levels are predictive of bacterial load of deep tissue cultures taken at the time of revision shoulder arthroplasty in patients undergoing primary shoulder arthroplasty.
Detailed description
Phase 1: 51 patients having elective shoulder arthroplasty were offered the opportunity to participate, consented and enrolled in this prospective clinical cohort study.
At a preoperative clinic visit, basic demographic information was collected along with the patient's response to a question about taking supplemental testosterone. A swab of the unprepared skin over the area of the intended surgical incision was obtained and sent for culture. At this clinic visit, a sample of the patient's blood was also obtained and submitted to our clinical laboratory for the levels of total serum testosterone, sec hormone binding globulin (SHBG), and free testosterone.
Immediately before surgery, another swab of the unprepared skin over the area of the intended surgical incision was once again obtained and sent for culture. After incision, a swab of the freshly incised dermis was obtained and sent for culture.
All 3 swabs that were obtained were observed for 21 days. The investigators analyzed the cultures to determine the presence and load of bacteria using a semiquantitative method, known as the Cutibacterium specimen value (SpCuV)
Phase 2: This phase will also involve a onetime pre-operative testosterone serum test. If the subject consents to participate, this additional sample of blood will be collected for a testosterone serum test during the routine pre-operative blood draw that all patients have before a shoulder arthroplasty regardless of research participation. The investigators will include cultures such as skin swabs taken at pre-operative clinic appointments, skin swabs taken at the time of surgery, incision swabs taken at the time of surgery, and discarded tissue from surgery using our standard protocol for specimens. For this study's outcome measures, the investigators will record the culture results from those clinical specimens and compare them to the testosterone serum test. Some subjects may also be a part of a long term follow-up study and the follow-up data (self-reported outcome measures, etc.) from that study will be included for analysis for those patients.
Primary outcome measures
- Serum testosterone [Time frame: At pre-operative clinic appointment, typically within 30 days prior to surgery]
- Free testosterone [Time frame: At pre-operative clinic appointment, typically within 30 days prior to surgery]
- sex hormone binding globulin [Time frame: At pre-operative clinic appointment, typically within 30 days prior to surgery]
- Cutibacterium specimen value [Time frame: Skin swab at pre-operative clinic appointment, typically within 30 days prior to surgery]
- Cutibacterium specimen value [Time frame: Skin swab immediately pre-operative]
- Cutibacterium specimen value [Time frame: Freshly incised dermis of surgical wound]
- Preoperative serum testosterone levels are associated with risk for shoulder PJI in patients undergoing primary shoulder arthroplasty. [Time frame: Up to 20 years after surgery]
- Preoperative serum testosterone levels are predictive of bacterial load of deep tissue cultures taken at the time of revision shoulder arthroplasty in patients undergoing primary shoulder arthroplasty [Time frame: 21 days after surgery]
Eligibility criteria
Phase 1 Inclusion Criteria:
- Patients having elective shoulder arthroplasty
Phase 1 Exclusion Criteria:
- history of shoulder septic arthritis
- antibiotic use within 3 months prior to surgery
- recent treatment for acne
- Lacked fluency in English
Phase 2 Inclusion Criteria:
- Patients having elective shoulder arthroplasty
Phase 2 Exclusion Criteria:
- Lacked fluency in English
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Cohort
Study locations
United States · 1 center
- University of Washington — Seattle
Identifiers
NCT: NCT05030220 · STUDY00009200