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Published on: December 23, 2013
Polyethylene glycol versus sodium phosphate mechanical bowel preparation in elective colorectal surgery
Kamal M F Itani1, Samuel E Wilson, Samir S Awad
1VA Boston Healthcare System and Boston University School of Medicine, 1400 VFW Pkwy. (112), West Roxbury, MA 02132, USA. Kitani@med.va.gov
Insights
Sodium phosphate (SP) mechanical bowel preparation (MBP) may reduce surgical site infections (SSI) after colorectal surgery compared to polyethylene glycol (PEG) MBP. SP combined with ertapenem showed the lowest SSI rates.
Area of Science:
- Colorectal Surgery
- Surgical Site Infections
- Gastrointestinal Surgery
Background:
- The optimal type of mechanical bowel preparation (MBP) for elective colorectal surgery is debated.
- Different MBPs may influence postoperative outcomes, including surgical site infections (SSI).
Purpose of the Study:
- To evaluate the impact of polyethylene glycol (PEG) versus sodium phosphate (SP) MBPs on SSI rates.
- To compare the efficacy of different MBP and antibiotic prophylaxis combinations.
Main Methods:
- Post hoc analysis of a randomized controlled trial comparing ertapenem and cefotetan.
- Assessment of SSI rates based on MBP type (PEG vs. SP).
Main Results:
- Both PEG and SP MBPs achieved high quality in most patients.
- A significantly higher SSI rate was observed with PEG (34%) compared to SP (24%).
- The combination of SP and ertapenem resulted in the lowest SSI rate (19%).
Conclusions:
- Sodium phosphate (SP) MBP may be associated with reduced SSI rates compared to PEG MBP.
- The combination of SP MBP and ertapenem prophylaxis may improve surgical outcomes.
Background:
The type of mechanical bowel preparation (MBP) used before elective colorectal surgery remains controversial.
Methods:
This post hoc analysis of a prospective randomized controlled antibiotic prophylaxis trial (ertapenem vs. cefotetan) evaluated the effect of polyethylene glycol (PEG) and sodium phosphate (SP) MBPs on the rates of postoperative surgical site infections (SSI).
Results:
Good to excellent MBPs were observed in 281 of 303 (93%) evaluable patients for the PEG and 336 of 367 (92%) for the SP types. A higher rate of SSI was observed in the PEG (34%) than SP (24%) group (difference, 10%; 95% confidence interval, 3.4-17.2). The MBP type was a significant risk factor for SSI, with SP favored over PEG (odds ratio, .6; 95% confidence interval, .43-.85) in univariate analysis; multivariate analysis favored SP, but was not significant (odds ratio, .69; 95% confidence interval, .46-1.02). SSI was lowest with SP and ertapenem (19%) and highest with PEG and cefotetan (44%).
Conclusions:
SP, coupled with ertapenem antibiotic prophylaxis, may improve outcomes and reduce SSIs in patients undergoing elective colorectal surgery when compared with PEG coupled with cefotetan antibiotic prophylaxis.
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