The purpose of this study is to determine if the addition of a 48-hour course of post-operative antibiotics to the recommended course of pre-operative antibiotics improves surgical site infection rate in patients who are obese and undergo Cesarean section after laboring.
The investigators propose the conduction of a prospective, randomized, double-blinded clinical trial to evaluate an alternative prophylactic regimen for the prevention of surgical site infection in women who are obese and have been laboring prior to their Cesarean section. This study is to be conducted by the Department of Obstetrics \& Gynecology at John Sealy Hospital at the University of Texas Medical Branch in Galveston, Texas. The intervention being studied will be the administration of cephalexin and metronidazole post-operatively for 48 hours. The primary outcome measure will be surgical site infection (including superficial or deep incisional surgical site infection, endometritis, and other related infections, such as septic pelvic thrombophlebitis and abdominal or pelvic abscess) in the post-operative period. In order to most effectively and accurately analyze our primary and secondary research outcomes, the investigators will standardize our surgical operation techniques in all ways feasible. These recommendations will be in concordance with American College of Obstetrics and Gynecology recommendations, as those generally accepted in the medical literature. All patients will undergo surgery in the same small group of HEPA-filtered and positive air-pressure operating rooms. Appropriate limitations on number of surgeons and assistants scrubbed for surgery, as well as general OR traffic, will be enforced. Patients will undergo hair clipping of the incision site when appropriate. Chlorhexidine skin decontamination will be the standard surgical site preparation. An adhesive drape will be used. Prior to skin incision, cefazolin and azithromycin will be administered. All patients to be considered for recruitment to this study will be undergoing delivery at John Sealy Hospital at the University of Texas Medical Branch in Galveston, Texas. Patients with an elevated BMI \>or =30 kg/m2 who undergo cesarean section after laboring will be considered for randomization either prior to delivery or in the first 7 hours after delivery, to accommodate the need for the first dose of study medication or placebo 8 hours after surgery. Only patients who agree to inclusion after informed consent will be randomized per protocol.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
321
Other name(s): Keflex (cephalexin) Cephalexin at 500 mg per oral every 8 hours for a total of 6 doses
Placebo representing standard of care
Other name(s): Flagyl (metronidazole) Metronidazole at 500 mg per oral every 8 hours for a total of 6 doses
St. David's North Austin Medical Center
Austin, Texas, United States
University of Texas Medical Branch John Sealy Hospital
Galveston, Texas, United States
Surgical site infection
Including superficial or deep incisional surgical site infection, endometritis, and other related infections, such as septic pelvic thrombophlebitis and abdominal or pelvic abscess
Time frame: 6 weeks postpartum
Maternal mortality
Maternal death
Time frame: 6 weeks (42 days) postpartum
Febrile morbidity
If the patient develops a measured temperate greater than or equal to 100.4 degrees Fahrenheit (or 38.0 degrees Celsius), she will have a postpartum fever.
Time frame: 6 weeks (42 days) postpartum
Postpartum antibiotic use
We will assess via chart review and direct patient inquiry whether or not antibiotics were taken by the patient for any purpose during the six weeks (42 days) immediately following delivery.
Time frame: 6 weeks (42 days) postpartum
Wound hematoma or seroma
Wound hematoma or seroma, as diagnosed by a medical provider, according to CDC guidelines for diagnosis of wound hematoma or seroma
Time frame: 6 weeks (42 days) postpartum
Use of resources
We will note whether the patient required hospital re-admission, emergency department visits, or need for imaging or other invasive procedures
Time frame: 6 weeks (42 days) postpartum
Other adverse events
Such as allergic reaction to study medications
Time frame: 6 weeks postpartum
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