Early Therapeutic Response Predicts Outcome in Chronic Constipation: A Multicenter Prospective Observational Study

Area of Science:

• Gastroenterology
• Clinical Pharmacology

Background:

• Chronic constipation affects quality of life and is common in clinical practice.
• Predictors of treatment efficacy for chronic constipation are not well understood.
• Identifying these predictors is crucial for optimizing patient care.

Purpose of the Study:

• To identify factors that predict successful treatment outcomes in patients with chronic constipation.
• To determine if early treatment response can predict long-term efficacy.

Main Methods:

• A multicenter, prospective observational study was conducted.
• Patients with chronic constipation (moderate to severe) were assessed using the CC-TEST questionnaire.
• Multivariate analyses identified predictive factors based on patient's impression, symptom intensity (NRS), and spontaneous bowel movement (SBM) frequency at 2 and 4 weeks post-treatment.

Main Results:

• 97 patients received constipation medications, showing significant symptom improvement at 2 and 4 weeks.
• Early treatment response at 2 weeks, specifically non-responsiveness, was a significant predictor of poorer patient impression and outcomes for NRS and SBM.
• Incorporating 2-week non-responsiveness improved the predictive accuracy for 4-week treatment efficacy.

Conclusions:

• The therapeutic response observed at two weeks is the most significant predictor of subsequent treatment response at four weeks.
• Early assessment of treatment efficacy in chronic constipation is crucial for predicting long-term outcomes.
• This finding can help clinicians tailor treatment strategies more effectively.