Surgical Site Infection With 0.05% Chlorhexidine (CHG) Compared to Triple Antibiotic Irrigation

Study Overview
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Brief Summary
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The investigators intend to perform a prospective randomized study and compare the incidence of surgical wound infection between mastectomy wounds irrigated with triple antibiotic solution (one side) and 0.05% CHG (opposite side) in patients undergoing bilateral breast reconstruction. Each patient will receive triple antibiotic solution on one breast and the CHG on the other breast.

Detailed Description
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Breast reconstruction with tissue expander (TE) remains the gold standard of breast restoration after mastectomy. During the first stage of reconstruction, a TE is placed under chest muscles and slowly inflated postoperatively over the period of several weeks. After desired volume of TE is achieved it is exchanged for permanent breast prosthesis during another surgery (second stage of reconstruction). Postoperative wound infection after placement of TE can lead to devastating consequences both for patients and a surgeon. Frequently, surgical site infection requires additional surgeries and resulting in the removal of TE and long term IV antibiotic therapy. Therefore, during breast reconstruction procedures all possible measures are implemented to reduce postoperative infection rate. Several studies demonstrated that intra-operative irrigation of surgical wounds with antibiotic containing solution before insertion of breast TE decreases postoperative infection rate. This approach is currently adopted as a standard of care within plastic surgery clinical community. The investigators intend to perform a prospective randomized study and compare the incidence of surgical wound infection between mastectomy wounds irrigated with triple antibiotic solution (one side) and 0.05% CHG (opposite side) in patients undergoing bilateral breast reconstruction.

Official Title
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Post-Mastectomy Surgical Pocket Irrigation With Triple Antibiotic Solution vs Chlorhexidine Gluconate: A Randomized Controlled Trial Assessing Surgical Site Infections in Immediate Tissue Expander Breast Reconstruction

Conditions
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Breast Cancer

Intervention / Treatment
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* Drug: Chlorhexidine irrigation
* Drug: triple antibiotic irrigation


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: females between 18 - 81 years of age and are undergoing bilateral mastectomy and are candidates for immediate breast reconstruction with tissue expanders. Exclusion Criteria: females younger than 18 and older than 81 years of age; undergoing unilateral mastectomy and reconstruction; bilateral reconstruction using other techniques, patients allergic to one or more components of the antibiotic solution; allergy to CHG

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 81 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Chlorhexidine irrigation<br>0.05% chlorhexidine solution (IrriSept®) commercially prepared in 450 ml bottles for irrigation. Each patient will receive triple antibiotic solution on one breast and the CHG on the other breast. | Drug: Chlorhexidine irrigation<br>* - 0.05% chlorhexidine solution (IrriSept®) commercially prepared in 450 ml bottles will be used to irrigate one breast pocket. Each patient will receive triple antibiotic solution on one breast and the CHG on the other breast.<br>* Other names: CHG;|
| Active Comparator: triple antibiotic irrigation<br>triple antibiotic solution will contain 1 g of cefazolin, 50,000 U of bacitracin, and 80 mg of gentamicin in 500 mL of normal saline (NS). If the patient is allergic to either component - the allergen will not be used in the solution - for irrigation. Each patient will receive triple antibiotic solution on one breast and the CHG on the other breast. | Drug: triple antibiotic irrigation<br>* -triple antibiotic solution will contain 1 g of cefazolin, 50,000 U of bacitracin, and. Each patient will receive triple antibiotic solution on one breast and the CHG on the other breast. 80 mg of gentamicin in 500 mL of NS. If the patient is allergic to either component - the allergen will not be used in the solution - to irrigate one breast pocket<br>* Other names: gentamicin, cefazolin and bacitracin;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants With Surgical Site Infection | At all postoperative visits with the reconstructive surgeon, patients were thoroughly examined for presence of SSI (cellulitis, purulent drainage). SSI was defined as any instance where antibiotics were restarted or where erythema, cellulitis, warmth, purulent drainage, or fever occurred. SSI was further classified in 3 categories: minor when requiring oral antibiotics, major when requiring inpatient intravenous antibiotics or operative washout, and finally, explantation. | 6 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants With Flap Necrosis, Hematoma, and Seroma | At all postoperative visits with the reconstructive surgeon, patients were thoroughly examined for presence of necrosis, seroma, or hematoma. | 6 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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tissue expander, breast reconstruction