Constipation is a prevalent gastrointestinal disorder, affecting approximately 15% of the global population. It is more commonly diagnosed in North America and Europe compared to Asia, likely due to variations in diet, culture, and environment. Risk factors for constipation include age over 65, female gender, sedentary lifestyle, low socioeconomic status, low-fiber diet, and non-White race. Chronic idiopathic constipation (CIC) is characterized by persistent constipation symptoms without an identifiable cause through standard diagnostic tests, impacting around 8%-12% of the US population.

This Guidelines Side-By-Side article provides a detailed comparison of the current clinical practice guidelines from the American Society of Colon and Rectal Surgeons (ASCRS) and the American College of Gastroenterology (ACG)/American Gastroenterological Association (AGA). By examining these recommendations, this article aims to equip healthcare providers with valuable insights and best practices for evaluating chronic constipation and CIC. This evidence-based approach aims to enhance health outcomes for individuals affected by this complex condition.

Titles of Comparison:

ASCRSACG/AGA
TitlesEvaluation and Management of Chronic ConstipationPharmacological Management of Chronic Idiopathic Constipation
SocietyAmerican Society of Colon and Rectal Surgeons (ASCRS)American College of Gastroenterology (ACG)American Gastroenterological Association (AGA)
Publication DateSeptember 10, 2024May 18, 2023
ObjectiveThis committee was created to lead international efforts in defining quality care for conditions related to the colon, rectum, and anus and develop clinical practice guidelines based on the best available evidence. Although not proscriptive, these guidelines provide information based on which decisions can be made and do not dictate a specific form of treatment. These guidelines are intended for use by all practitioners, health care workers, and patients who desire information on the management of the conditions addressed by the topics covered in these guidelines. These guidelines should not be deemed inclusive of all proper methods of care nor exclusive of methods of care reasonably directed toward obtaining the same results. The ultimate judgment regarding the propriety of any specific procedure must be made by the physician considering all the circumstances presented by the individual patient.Chronic idiopathic constipation (CIC) is a common disorder associated with significant impairment in quality of life. This clinical practice guideline, jointly developed by the American Gastroenterological Association and the American College of Gastroenterology, aims to inform clinicians and patients by providing evidence-based practice recommendations for the pharmacological treatment of CIC in adults. This document provides a comprehensive outline of the various over-the-counter and prescription pharmacological agents available for the treatment of CIC. The guidelines are meant to provide a framework for approaching the management of CIC; clinical providers should engage in shared decision making based on patient preferences as well as medication cost and availability. Limitations and gaps in the evidence are highlighted to help guide future research opportunities and enhance the care of patients with chronic constipation.
Target PopulationThe target audience for these guidelines includes primary care, internal medicine, family medicine, and gastroenterology healthcare providers; patients; and policymakers.


These guidelines are intended for use by all practitioners, health care workers, and patients who desire information on the management of the conditions addressed by the topics covered in these guidelines.
The population of interest was adults (18 years or older) diagnosed with CIC.
MethodologyThe final grade of recommendation and level of evidence for each statement were determined using the Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) system.The GRADE approach was used to assess the certainty of evidence for the effect of the intervention on each outcome using the software GradePro.
Graded Strength of RecommendationsYesYes
Graded Level of EvidenceYesYes
Systematic Review ConductedYesYes
Literature Review ConductedYesYes
COIs & Funding Source(s) DisclosedYesYes
Full-textThe American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for the Evaluation and Management of Chronic ConstipationAmerican Gastroenterological Association-American College of Gastroenterology Clinical Practice Guideline: Pharmacological Management of Chronic Idiopathic Constipation
SummaryASCRS Evaluation and Management of Chronic Constipation Guideline SummaryAGA/ACG Pharmacological Management of
Chronic Idiopathic Constipation Guideline Summary
Other LinksPocket Guide: ACG/AGA Pharmacological Management of Chronic Idiopathic Constipation Guideline Pocket Guide

Assessment Overview

ASCRS ACG/AGA 
FocusComprehensive evaluation and management of chronic constipationPharmacological management of chronic idiopathic constipation
Initial ApproachDirected history and physical examinationUse of fiber supplementation and osmotic laxatives
Lifestyle ModificationsEmphasizes dietary and lifestyle changes ensuring adequate fluid intake and fiber supplementationRecommends fiber supplementation over management without fiber supplements and adequate hydration
Osmotic LaxativesPolyethylene glycol (PEG) and magnesium saltsPolyethylene glycol (PEG), magnesium oxide, lactulose
Stimulant LaxativesBisacodyl, sodium picosulfateBisacodyl, sodium picosulfate, senna
SecretagoguesNot specifically mentionedLubiprostone, linaclotide, plecanatide, prucalopride
BiofeedbackRecommended for patients with pelvic floor dysfunctionNot specifically mentioned
Multidisciplinary CareEncourages a team-based approachFocuses on pharmacological interventions
Patient-Centered GoalsIndividualized treatment plans based on patient needsShared decision-making based on patient preferences and medication cost

Key Similarities:

  • Patient-Centered Care:
    • Both emphasize individualized treatment based on patient history and response to previous therapies.

  • Non-Pharmacological Interventions:
    • They highlight the importance of dietary fiber and lifestyle modifications before moving to pharmacological treatments.

  • Stepwise Approach:
    • Each recommends a structured approach—starting with less invasive options, then moving to more intensive treatments if necessary.

  • Over-the-Counter (OTC) Agents:
    • Both guidelines suggest the use of OTC laxatives and supplements as first-line treatments.

  • Monitoring and Follow-Up:
    • They underscore the need for ongoing assessment and adjustment of treatment plans based on patient progress.

Key Differences:

  • Initial Approach:
    • The ASCRS guidelines emphasize a comprehensive evaluation and lifestyle modifications, while the ACG/AGA guidelines focus on pharmacological management.

  • Lifestyle Modifications:
    • ASCRS guidelines provide detailed recommendations for dietary and lifestyle changes, whereas ACG/AGA guidelines recommend fiber supplementation and hydration.

  • Biofeedback:
    • ASCRS guidelines recommend biofeedback for pelvic floor dysfunction, which is not mentioned in the ACG/AGA guidelines.

  • Secretagogues:
    • The ACG/AGA guidelines specifically recommend secretagogues like lubiprostone, linaclotide, plecanatide, and prucalopride, which are not mentioned in the ASCRS guidelines.

The guidelines for managing chronic constipation and chronic idiopathic constipation (CIC) emphasize a patient-centered, stepwise approach, beginning with non-pharmacological interventions such as dietary fiber and lifestyle modifications. In terms of evaluation, it is recommended to discontinue constipating medications, conduct digital rectal exams, and consider additional tests and colonoscopy based on specific indicators. When it comes to pharmacological management, both guidelines suggest utilizing over-the-counter agents such as fiber supplements, polyethylene glycol, and magnesium oxide as first-line treatments. The ASCRS guideline delves into surgical approaches, while the ACG/AGA focuses on pharmaceutical approaches. Each guideline serves as a valuable resource for addressing these common conditions.

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