Management of Constipation in End-Stage Renal Disease Patients

Preferred Treatment Options

The American College of Oncology strongly endorses polyethylene glycol (PEG) as the preferred osmotic laxative for patients with end-stage renal disease, with typical dosing of one capful with 8 oz of water twice daily 2
PEG has a superior safety profile in renal disease because it does not cause electrolyte disturbances, unlike magnesium-based laxatives which can lead to hypermagnesemia in renal impairment 1
PEG is more effective than liquid paraffin (mineral oil) and avoids the risks of aspiration pneumonia, anal seepage, and skin excoriation 1, 2

Magnesium and sulfate salts must be used cautiously or avoided in renal impairment due to risk of hypermagnesemia from excessive doses 1, 2
Sodium phosphate enemas are contraindicated in ESRD patients with creatinine clearance <60 mL/min/1.73 m² due to risk of serious electrolyte disturbances 3
Docusate sodium (stool softener) is not recommended as its use in palliative care is based on inadequate experimental evidence, and research shows it is less effective than sennosides alone 1

First-line oral therapy should start with PEG (polyethylene glycol) as the primary osmotic laxative 2
If constipation persists, add a stimulant laxative (senna or bisacodyl) rather than increasing PEG alone 2
For opioid-induced constipation in ESRD, combine PEG with a stimulant laxative (senna or bisacodyl) from the start 2
Avoid bulk-forming laxatives (psyllium) as they are not recommended for opioid-induced constipation 2

If oral therapy fails after several days, perform digital rectal exam to assess for fecal impaction 1
If rectum is full, use glycerin suppositories or bisacodyl suppositories as first-line rectal therapy 1, 3
Avoid sodium phosphate enemas in ESRD; if enema is necessary, use hyperosmotic saline or oil retention enemas 1, 3

Bisacodyl is the preferred rectal option over sodium phosphate in patients with renal impairment 3
Lactulose can be used as an alternative osmotic agent if PEG is unavailable, though it has a 2-3 day latency period and may cause bloating 1, 2
Enemas are contraindicated in patients with neutropenia, thrombocytopenia, recent colorectal surgery, or undiagnosed abdominal pain 1, 2, 3