Constipation in the elderly

Sunday, April 19, 2026

🔬 Practice-Changing Findings
Evidence from RCTs and meta-analyses published in the last 12 months.

1. PROs vs clinician-reported adverse events in a large clinical trial: findings from the phase 3 POLARIX study.

Blood (2026) - Randomized Controlled Trial

Key Findings

Patient-reported instruments showed increased incidence of constipation and other GI symptoms versus clinician-reported adverse-event capture, indicating meaningful under-detection by routine clinician reporting.
Both Pola-R-CHP and R-CHOP produced rapid, sustained improvements in global health status, fatigue, and social or emotional functioning, and constipation generally returned to baseline after treatment completion.

📋 Practice Implication: In older adults receiving multi-agent chemotherapy, add structured patient-reported bowel symptom tracking because clinician-only adverse-event review can miss clinically relevant constipation.

2. Lubiprostone in chronic kidney disease: Insights into mitochondrial function and polyamines from a randomized phase 2 clinical trial.

Science advances (2025) - Randomized Controlled Trial

Key Findings

Lubiprostone 16 micrograms improved or preserved estimated glomerular filtration rate and its slope versus placebo over 24 weeks in patients with stage IIIb-IV chronic kidney disease.
Lubiprostone increased spermidine levels and improved renal mitochondrial function without reducing indoxyl sulfate levels, and adverse events remained mild to moderate.

📋 Practice Implication: For older patients with constipation plus advanced chronic kidney disease, lubiprostone is a reasonable option when renal trajectory matters because benefit may extend beyond stool symptoms.

3. Comparative effects of traditional Thai abdominal massage versus prune consumption on constipation and quality of life in elderly women: A randomized controlled trial.

Aging clinical and experimental research (2025) - Randomized Controlled Trial

Key Findings

Traditional Thai abdominal massage reduced constipation severity by -6.71 +/- 2.84 and pain by -5.55 +/- 1.92, outperforming prune consumption and control over 8 weeks.
Massage improved stool consistency by -2.03 +/- 0.84, while prunes produced the largest quality-of-life gain (+0.75 +/- 0.44); group-by-time effects were significant for all outcomes (all p < 0.001).

📋 Practice Implication: When medication burden is high or simple dietary measures are insufficient, abdominal massage can be offered as a low-cost adjunct for older women with functional constipation.

4. Establishing the minimal important change for Patient Assessment of Constipation Quality of Life questionnaire for the prevention of opioid-induced constipation in patients with cancer pain.

Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer (2025) - Randomized Controlled Trial

Key Findings

The minimal important change for the PAC-QOL overall score ranged from 0.14 to 0.41, defining the amount of improvement likely to be meaningful in opioid-induced constipation prevention.
The PAC-QOL satisfaction subscale showed clinically meaningful improvement at 0.20 to 1.80 points, linking patient-perceived benefit to constipation and bowel-function change anchors.

📋 Practice Implication: When monitoring prevention or treatment of opioid-induced constipation in older adults with cancer pain, use PAC-QOL change thresholds rather than raw score shifts alone to judge benefit.

5. Oliceridine versus Sufentanil for Postoperative Recovery and Opioid-Related Adverse Events in Patients Undergoing Thoracoscopic Lobectomy: A Randomized Double-Blind Controlled Trial.

Drug design, development and therapy (2026) - Randomized Controlled Trial

Key Findings

Oliceridine reduced postoperative nausea or vomiting and respiratory depression versus sufentanil while maintaining comparable pain scores, sedation scores, and hemodynamics.
Quality of Recovery-15 scores improved at 24 and 48 hours with oliceridine versus sufentanil, supporting faster early postoperative recovery.

📋 Practice Implication: For postoperative analgesia in older thoracic-surgery patients at high bowel-motility risk, choosing oliceridine over conventional opioids may reduce early opioid-related GI burden without sacrificing analgesia.

💡 Summary

Among the highest-significance recent studies, the most useful signals were context-specific rather than a single universal laxative strategy: abdominal massage improved symptoms in older women, lubiprostone showed a renal-preserving signal in constipated CKD patients, and opioid-related constipation risk may be reduced through better monitoring and opioid selection. A consistent operational theme is that constipation burden is often underdetected unless patients report it directly, so structured bowel symptom tracking should accompany treatment decisions in medically complex older adults.