Constipation Management Guidelines

Initial Assessment and Non-Pharmacological Management

The American Gastroenterological Association recommends assessing for potential causes of constipation, including medications, decreased fluid intake, decreased mobility, and underlying medical conditions, to guide management 3, 4
Ensuring privacy and comfort for defecation, proper positioning, increased fluid intake, increased physical activity, and optimized toileting schedule are recommended as preventive strategies for constipation 2, 3, 4

The American College of Gastroenterology strongly recommends polyethylene glycol (PEG) as first-line therapy for constipation due to its proven efficacy in increasing bowel movements 1, 2
PEG increases complete spontaneous bowel movements by approximately 2.9 per week compared to placebo, with side effects including abdominal distension, loose stool, flatulence, and nausea 1, 2
For opioid-induced constipation, prophylactic laxative therapy should be initiated when starting opioids, with osmotic laxatives (PEG) or stimulant laxatives (senna, bisacodyl) preferred 3, 5

For fecal impaction, suppositories and enemas are preferred first-line therapy, with glycerine suppository or mineral oil retention enema recommended 3, 7
Manual disimpaction may be necessary after pre-medication with analgesics/anxiolytics for fecal impaction 3, 7
For persistent constipation, consider combination therapy (e.g., PEG plus stimulant laxative) or peripherally acting mu-opioid receptor antagonists (PAMORAs) for opioid-induced constipation 3, 5, 7

Enema contraindications include neutropenia, thrombocytopenia, paralytic ileus, intestinal obstruction, recent colorectal or gynecological surgery, recent anal or rectal trauma, severe colitis, inflammation, or infection of the abdomen, toxic megacolon, and undiagnosed abdominal pain 2, 8
Elderly patients require individualized laxative regimens considering medical history, drug interactions, and potential adverse effects, with access to toilets and dietetic support to address decreased food intake 3, 4

Assess for adequate constipation symptom management with goal of one non-forced bowel movement every 1-2 days, monitoring for side effects and reassessing for impaction or obstruction as needed 1, 2, 7