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.
Abstract

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