Effect and Safety of Polyethylene Glycol Combined With Linaclotide on Colon Cleansing for Patients With Chronic Constipation

Study Overview
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Brief Summary
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Constipation is a common reason of poor bowel preparation, which negatively influences the quality of colonoscopy. Clinically to explore more effective and tolerant bowel clearance programs is necessary for patients with chronic constipation.

Detailed Description
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Colonoscopy is an important method to screen, diagnose and treat colon lesions. The quality of bowel preparation is requisite for the accuracy of diagnosis and safety of treatment. To explore the application effect and safety of Linaclotide combined with Compound Polyethylene Glycol Electrolyte Powder on colon cleansing before colonoscopy in patients with chronic constipation. A prospective mult-centers, colonoscopist-blinded study was conducted. A total of 300 patients with constipation who underwent colonoscopy in 8 hospitals from July to December 2021 were selected as study subjects and divided into the control group, observation group 1, observation group 2 and observation group 3 by random number table method, with 75 cases in each group. Intestinal cleanliness and the incidence of adverse reactions of patients in each group were compared.

Official Title
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Effect and Safety of Polyethylene Glycol Combined With Linaclotide on Colon Cleansing Before Colonoscopy in Patients With Chronic Constipation:an Endoscopist-blinded,Randomized,Controlled, Multicentre Trial

Conditions
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Bowel Preparation

Intervention / Treatment
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* Drug: Linaclotide
* Drug: Compound Polyethylene Glycol Electrolyte Powder


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Inclusion criteria included: The inclusion criteria were patients ≥18 years old suffering from≥2 of the following criteria of chronic constipation under the Rome IV standard: straining, hard stool, residual stool feeling, occlusion feeling, manual bowel movement(BM) performed ≥25% of overall BMs, and BM frequency<3 times a week . A chronic status was defined as symptoms being present for at least six months, with the symptoms described above being present for at least three months. Exclusion Criteria: Exclusion criteria included: (1)age <18 or> 75; (2) severe chronic renal failure, severe congestive heart failure and Liver dysfunction ;(3)with uncontrolled hypertension, diabetes, intestinal obstruction, intestinal perforation and electrolyte disorders, inflammatory intestinal disease and other organic gastrointestinal diseases;(4)with neurologic, endocrine, or metabolic disorders;(5)treatment with other gastrointestinal drivers, laxatives, and antilaxatives within nearly 2 weeks;(6)history of colorectal surgery;(7) dysphagia; (8) compromised swallowing reflex or mental status;(9)with consciousness disorders or examination intolerance;(10)pregnancy or lactation;(11)allergic to the drug composition;(12)Suspected history of alcohol or substance abuse; (13)Recent participants in clinical trials; (14) unable to give informed consent.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Screening
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: The control group<br>The control group was given 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestines | Drug: Compound Polyethylene Glycol Electrolyte Powder<br>* The control group was given Compound Polyethylene Glycol Electrolyte Powder to clear the intestines,<br>|
| Experimental: the observation group 1<br>the observation group 1 was given Linaclotide(290 ug) in 1 day combined with 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine | Drug: Linaclotide<br>* The observation group 1 was given Linaclotide in 1 day combined with 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine, and the observation group 2 was given Linaclotide in 1 day combined with 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine. observation group 3 was given Linaclotide in 3 day combined with 3L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine. Intestinal cleanliness and the incidence of adverse reactions of patients in each group were compared.<br>Drug: Compound Polyethylene Glycol Electrolyte Powder<br>* The control group was given Compound Polyethylene Glycol Electrolyte Powder to clear the intestines,<br>|
| Experimental: the observation group 2<br>the observation group 2 was given Linaclotide(290 ug) in 1 day combined with 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine | Drug: Linaclotide<br>* The observation group 1 was given Linaclotide in 1 day combined with 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine, and the observation group 2 was given Linaclotide in 1 day combined with 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine. observation group 3 was given Linaclotide in 3 day combined with 3L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine. Intestinal cleanliness and the incidence of adverse reactions of patients in each group were compared.<br>Drug: Compound Polyethylene Glycol Electrolyte Powder<br>* The control group was given Compound Polyethylene Glycol Electrolyte Powder to clear the intestines,<br>|
| Experimental: the observation group 3<br>the observation group 3 was given Linaclotide(290 ug) in 3 day combined with 3L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine. | Drug: Linaclotide<br>* The observation group 1 was given Linaclotide in 1 day combined with 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine, and the observation group 2 was given Linaclotide in 1 day combined with 4L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine. observation group 3 was given Linaclotide in 3 day combined with 3L of Compound Polyethylene Glycol Electrolyte Powder to clear the intestine. Intestinal cleanliness and the incidence of adverse reactions of patients in each group were compared.<br>Drug: Compound Polyethylene Glycol Electrolyte Powder<br>* The control group was given Compound Polyethylene Glycol Electrolyte Powder to clear the intestines,<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The Boston Bowel Preparation Scale | the effect of colon cleansing | colonoscopy screening procedure | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Chronic Constipation, Colonoscopy, Linaclotide