Elective Colorectal Surgery Clinical Trial
Official title:
Intravenous Versus Combined Oral and Intravenous Antimicrobial Prophylaxis for the Prevention of Surgical Site Infection in Elective Colorectal Surgery: A Double-blinded Multicenter Prospective Randomized Controlled Trial
To assess the effects of a combined antimicrobial prophylaxis using oral ornidazole (the day before surgery) and intravenous cephalosporin (before surgical incision) with that of intravenous cephalosporin alone (standard of care) in combination with oral placebo on the incidence of SSI within 30 days after elective colorectal surgery.
Surgical site infection (SSI) is a major cause of nosocomial infection in surgical patients, with the highest rates being reported (ranging from 15% to 30%) in colorectal surgery. SSI is an independent predictor of postoperative mortality and is associated with longer hospital stay, a 5-fold likelihood of postoperative readmission and a 2- to 3-fold increase in costs of care. Given the high prevalence and financial burden associated with SSI, American and European guidelines have been issued providing evidenced-based recommendations for the prevention of postoperative SSI. However, the prevalence of SSI remains high despite adherence to these guidelines and the application of evidence-based preventive measures. Risk factors for SSI, whether modifiable or not, are mainly related to the patient condition (including age, severe comorbidity, diabetes, nutritional status, steroid use, smoking, and immunosuppression) and/or the surgical procedure (especially the surgical duration and skin disinfection). The prevention of SSI consists of several individual measures, and antibiotic prophylaxis covering aerobic and anaerobic bacteria is highly recommended in patients scheduled to elective colorectal resection, with French and European guidelines recommending the administration of intravenous cephalosporin within 30 minutes before surgical incision. Recent data from retrospective studies and two meta-analyses of clinical trials provided compelling arguments that oral antibiotic administration before surgery in addition to conventional intravenous prophylaxis may be useful in further reducing by almost 75% the incidence of SSI (relative risk 0.55 [CI95%: 0.41 to 0.74]) after elective colorectal cancer surgery. However, most of these studies have limitations precluding extrapolation of data into routine care, especially: 1. prolonged duration of intravenous antibiotic administration, which is no longer recommended in elective surgery; 2. the use of antibiotics for oral prophylaxis whose availability is limited; 3. only a few studies focused specifically on colorectal resection; 4. most studies did not include enhanced recovery after surgery (ERAS) programs, which was found to improve outcome following colorectal surgery, and 5. most studies have used mechanical bowel preparation, which is no longer recommended in colonic surgery while the issue still remains open for rectal surgery. Investigators hypothesized that oral antibiotic prophylaxis using ornidazole, which has a spectrum of activity extended to most anaerobic bacteria and whose pharmacokinetic profile allows a single administration the day before surgery, in addition to intravenous antibiotic prophylaxis could be more effective than intravenous antibiotic prophylaxis alone using cephalosporin in reducing the incidence of SSI after elective colorectal surgery. Given the number of patients operated of colorectal surgery each year, the study is of significant clinical importance ;
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