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Preop Laxatives in Robotic Urologic Surgery

The Use of Preoperative Osmotic Laxatives to Improve Recovery of Bowel Function After Robotic-assisted Urologic Surgery

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05805436
Enrollment
240
Registered
2023-04-10
Start date
2023-06-01
Completion date
2026-03-03
Last updated
2025-05-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Constipation, Kidney Cancer, Prostate Cancer

Brief summary

Minimally-invasive surgery, either laparoscopic or robotic, is commonly used in urology. Several urologic procedures including prostatectomy, radical nephrectomy, and partial nephrectomy are now commonly performed robotically. Patients undergoing these procedures often have delayed return of bowel function and persistent gastrointestinal symptoms including nausea/vomiting, abdominal distension, and bloating for several days to weeks after surgery. Postoperative stool softeners and laxatives are routinely used in an effort to minimize these symptoms, with varying degrees of success. The aim of this study will be to evaluate whether the use of a preoperative osmotic laxative will be beneficial in improving recovery of bowel function and alleviating postoperative gastrointestinal complaints in patients undergoing these procedures. Patients will be randomized to either receive or not receive three days of polyethylene glycol (PEG, also known as MiraLAX) on the three days before surgery. Patients in both groups will receive the same postoperative bowel regimen including scheduled PEG both in the hospital and upon discharge until first bowel movement. Patients will be given a questionnaire and diary to record their postoperative gastrointestinal symptoms and time to first bowel movement. These questionnaires and diaries will then be analyzed to determine differences in time to first bowel movement and gastrointestinal complaints during their recovery from surgery.

Interventions

DRUGPolyethylene Glycol 3350

Patients in the intervention arm will take polyethylene glycol 3350 for three days before robotic urologic surgery. Patients in the control arm will not.

Sponsors

Chad R. Tracy
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
30 Years to 100 Years
Healthy volunteers
Yes

Inclusion criteria

-Patients 30 years or older undergoing robotic-assisted laparoscopic radical prostatectomy, transperitoneal radical nephrectomy, or transperitoneal partial nephrectomy

Exclusion criteria

* Patients under 30 years old * Patients with a contraindication to receiving polyethylene glycol or other forms of laxatives * People who regularly take Miralax * Patients undergoing retroperitoneal radical or partial nephrectomy * Patients with severe ulcerative colitis or Crohn's disease * Patients with intestinal diversions (colostomy, ileostomy) * Patients with prior abdominal or pelvic radiation * Patients who will not follow up with UIHC postoperatively * Patients who are incarcerated

Design outcomes

Primary

MeasureTime frameDescription
Time to first bowel movement after surgery7 daysTime to first bowel movement after surgery

Secondary

MeasureTime frameDescription
Narcotic usage7 daysMorphine equivalents used by patients in the first 7 days postoperatively
Patient Assessment of Constipation-Symptoms (PAC-SYM) Questionnaire7 daysPatient Assessment of Constipation-Symptoms (PAC-SYM) Questionnaire scores 7 days postoperatively (scale 0 - 48, higher score indicates worse constipation)

Countries

United States

Contacts

Primary ContactChad Tracy, MD
chad-tracy@uiowa.edu+1 319 335 8056

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026