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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01244698
Other study ID # 160583-3
Secondary ID
Status Completed
Phase Phase 4
First received November 18, 2010
Last updated May 12, 2014
Start date November 2010
Est. completion date May 2014

Study information

Verified date May 2014
Source Stony Brook University
Contact n/a
Is FDA regulated No
Health authority United States: Food and Drug Administration
Study type Interventional

Clinical Trial Summary

Antibiotics are used routinely in postoperative tissue expander based breast reconstruction (TE) and autologous flap (AF) breast reconstruction procedures. Closed suction drains are also used routinely in immediate breast reconstruction to prevent fluid accumulation and seroma formation at the surgical sites. Antibiotics are most often prescribed as a precaution since drains can be a source for infection by creating open channels to outside contaminants. Plastic surgery patients without closed suction drainage devices are usually not placed on prolonged postoperative antibiotics. Current preoperative surgical antibiotic prophylaxis is recommended for up to 24 hours only. These recommendations do not take into account the increased risk of indwelling closed suction drains. A recent survey of plastic surgeons, conducted by SBUMC investigators, (IRB# 129415) found that Plastic Surgeons are divided as to extended outpatient administration following TE breast reconstruction.

The study plans to prospectively enroll patients who will undergo immediate breast reconstruction with TE or AF based breast reconstruction. Using the above data and the current protocol, the investigators will investigate the optimal antibiotic discontinuation period for these patients. The investigators hypothesize that the use of 24-hour perioperative antibiotics in TE or AF based immediate breast reconstruction with closed suction drainage, does not result in an increased infection rate compared to prolonged postoperative antibiotic administration.


Description:

Background:

Antibiotics are used routinely in postoperative tissue expander based breast reconstruction (TE) and autologous flap (AF) breast reconstruction procedures. Closed suction drains are also used routinely in immediate breast reconstruction to prevent fluid accumulation and seroma formation at the surgical sites. Antibiotics are most often prescribed as a precaution because drains may serve as an open channel to outside contaminants. Plastic surgery patients without closed suction drainage devices are usually not placed on prolonged postoperative antibiotics. Current preoperative surgical antibiotic prophylaxis is recommended for up to 24 hours only. These recommendations do not take into account the increased risk of indwelling closed suction drains.

Current plastic surgery literature does not provide recommendations or consensus for antibiotic discontinuation following immediate breast reconstruction. A recent survey conducted of 650 plastic surgeons showed that 98% of respondents give preoperative antibiotics, while 91% provide antibiotics for up to 24 hours. Additionally, 71% of respondents prescribe postoperative outpatient antibiotics. There was a divide of when to discontinue antibiotics among plastic surgeons who gave them postoperatively. 46% preferred to continue antibiotics until drain removal, while 52% preferred a specific postoperative day, most commonly day 5 or 7.

In the same survey, the majority (97%) of surgeons use IV Cefazolin as the choice for preoperative prophylaxis and oral Cephalexin (75.4%) and Cefadroxil (14.3%) for outpatient antibiotics. Currently at Stony Brook University Medical Center, patients normally receive 24 hours of IV Cefazolin, followed by postoperative antibiotic prescription for Cefadroxil. Antibiotics are discontinued when the final drain is removed.

The study plans to prospectively enroll patients who will undergo immediate breast reconstruction with TE or AF based breast reconstruction. Using the above data and the current protocol, the investigators will investigate the optimal antibiotic discontinuation period for these patients. The investigators will randomize these patients into two groups. One group will receive the current antibiotic regimen of 24 hours of IV Cefazolin, followed by outpatient Cefadroxil. Antibiotics will be discontinued for this group once the final drain is removed. The other group will only receive 24 hours of IV Cefazolin without any additional outpatient antibiotics, as is recommended for elective clean surgeries. In patients with penicillin allergies or sensitivity, clindamycin, IV and oral is used. The same randomization will apply in these patients.

Rationale for early discontinuation of postoperative antibiotics:

Studies have associated prolonged antimicrobial prophylaxis with development of resistant bacterial strains following surgical procedures. No evidence has been reported supporting practices of continuing antibiotics until drains are removed. A single dose of preoperative IV antibiotics has been suggested to be sufficient prophylaxis for most breast surgery patients discharged home with drains.


Recruitment information / eligibility

Status Completed
Enrollment 132
Est. completion date May 2014
Est. primary completion date May 2014
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Female
Age group 18 Years and older
Eligibility Inclusion Criteria:

- All patients presenting to Stony Brook University Medical Center Plastic Surgery clinic for immediate breast reconstruction using a tissue expander.

- Age 18 years or older

Exclusion Criteria

- Delayed or revision implant reconstruction

- Refusal or inability to consent

- Contraindications to surgery as determined by attending physician

- Contraindications to both penicillin/cephalosporin and clindamycin antibiotics (significant allergies)

- Patients with serious existing systemic infection, defined as 2 or more of the following:

Peripheral body temperature >38 degrees Celsius CRP >5g/L Leukocytes > 12,000/microliter

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment


Intervention

Drug:
Cefadroxil discontinued early
All patients will receive 24 hours of IV Cefazolin (1g IV every 8 hr), as is universal practice for clean breast surgery. The interventional group will then discontinue antibiotics. Clindamycin IV 600mg every 6 hours for 24 hours will be used in penicillin allergic patients.
Cefadroxil until drain removal
All patients will receive 24 hours of IV Cefazolin, as is universal practice for clean breast surgery. The control group will receive oral outpatient Cefadroxil (500mg 2 times a day) until the final drain is removed. This is the normal postoperative regimen. In case of significant penicillin allergy (defined as a history of urticaria or anaphylaxis associated with penicillin) patients will receive Clindamycin 600mg IV every 6 hours for 24 hours followed by clindamycin 300mg IV every 6 hours.

Locations

Country Name City State
United States Stony Brook University Medical Center Stony Brook New York

Sponsors (2)

Lead Sponsor Collaborator
Stony Brook University Plastic Surgery Educational Foundation

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Surgical Site infection One or more of the following:
Purulent drainage, with or without laboratory confirmation, from the superficial incision.
Organisms isolated from an aseptically obtained culture of fluid or tissue from the superficial incision.
At least one of the following signs or symptoms of infection: pain or tenderness, localized swelling, redness, or heat and superficial incision is deliberately opened by surgeon, unless incision is culture-negative.
Diagnosis of superficial incisional SSI by the surgeon or attending physician.
365 days after the procedure Yes
Secondary Antibiotic Sensitivity Assessed by documentation of an allergic or adverse sensitivity reaction including, but not limited to urticaria, itching, rash, anaphylaxis From administration of the antibiotic until discontinuation Yes
Secondary Clostridium Difficile Colitis C. Difficile colitis will be assessed by documented positive c. difficile toxin assay. up to 365 days postoperatively Yes
Secondary Antibiotic Resistance Local wound infections will be cultured and sent for identification and susceptibility. Alternatively, pathological fluid collections will be aspirated and fluid will be sent for culture and susceptibility. Resistant strains will be documented and treated with alternative antibiotics. 1 year postoperatively Yes
Secondary Patient compliance patients will be asked to bring antibiotics to clinic for counting to assess compliance. while antibiotics are being administered postoperatively No
Secondary Cost Cost will be assessed by multiplying the duration of outpatient postoperative antibiotics by the cost for self-pay prescriptions. while antibiotics are being administered postoperatively No
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