Investigation of PicoPrep Versus HalfLytely for Bowel Preparation for Colonoscopy - Split Dose PicoPrep

Study Overview
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Brief Summary
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Subjects undergoing an elective complete colonoscopy will randomly receive either PicoPrep: 2-sachets for oral solution in two divided doses given a night before (first dose - sachet) and approximately 5 hours prior to procedure (second dose - sachet) or HalfLytely: for oral solution and two 5 mg Bisacodyl tablets, given the day before the procedure to evaluate its effectiveness, tolerability and safety.

Official Title
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A Randomized, Assessor-Blinded, Multi-Center Study Investigating the Efficacy, Safety and Tolerability of Split-Dose PicoPrep™ for Oral Administration Versus HalfLytely® for Colon Cleansing in Preparation for Colonoscopy

Conditions
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Bowel Preparation

Intervention / Treatment
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* Drug: PicoPrep
* Drug: HalfLytely
* Drug: bisacodyl


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female, age 18 to 80 years, inclusive, being scheduled to undergo elective colonoscopy Female patients should be post menopausal (women ≥ 45yrs with no menstrual period for at least 12 months without an alternative medical cause), be surgically sterile, or be using medically approved contraception, throughout the trial period Females of childbearing potential must undergo a pregnancy test at screening and again at randomization Subjects must have had more than or equal to 3 spontaneous bowel movements per week for one month prior to the colonoscopy Subjects should be willing, able and competent to complete the entire procedure and to comply with study instructions Written informed consent obtained prior to study Exclusion Criteria: Acute surgical abdominal conditions (e.g. acute obstruction or perforation, etc.) Active (acute/exacerbation of/severe/uncontrolled) Inflammatory Bowel Disease (IBD) Any prior colorectal surgery, excluding appendectomy, hemorrhoid surgery or prior endoscopic procedures Colon disease (history of colonic cancer, toxic megacolon, toxic colitis, idiopathic pseudo-obstruction, hypomotility syndrome) Ascites Gastrointestinal disorder (active ulcer, outlet obstruction, retention, gastroparesis, ileus) Upper gastrointestinal surgery (gastric resection, gastric banding, gastric by-pass) Uncontrolled angina and/or Myocardial Infarction (MI) within last 3 months, Congestive Heart Failure (CHF), or uncontrolled hypertension Renal insufficiency (serum creatinine and potassium must be within normal limits) Participation in an investigational study within 30 days prior to receiving study medication (or within 60 days for investigational drugs with an elimination half-life greater than 15 days) Any clinically significant laboratory value at the screening, including pre-existing electrolyte abnormality, based on clinical history that the Investigator feels may affect the study evaluation Hypersensitivity to active ingredients

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 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: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: PICOPREP<br>Split Dose method and consists of two separate doses: the first dose during the evening before the colonoscopy and the second dose the next day, during the morning prior to the colonoscopy. | Drug: PicoPrep<br>* PICOPREP (sodium picosulfate, magnesium oxide and citric acid) powder for oral solution consisted of 2 pouches of powder administered in a divided dose. Each PICOPREP pouch was reconstituted by mixing the contents in a cup with 5 ounces of cold water. The first pouch was taken between 5:00 PM and 9:00 PM the evening prior to the colonoscopy procedure. Subjects were to consume five (5) 8-ounce glasses of clear liquids over the next few hours. The second pouch was taken approximately 5 hours before but no more than 9 hours prior to the colonoscopy procedure. Subjects were to consume three (3) 8-ounce glasses of clear liquids.<br>* Other names: Prepopik™;|
| Active Comparator: HalfLytely<br>HalfLytely and Bisacodyl Tablets Bowel Prep Kit was used according to the approved labeled dosage and administration instructions. The two bisacodyl tablets were taken the day prior to the procedure and the HalfLytely was taken following the first bowel movement or 6 hours after the bisacodyl tablets. | Drug: HalfLytely<br>* HalfLytely contains polyethylene glycol electrolyte solution (PEG-EL), sodium chloride, sodium bicarbonate and potassium chloride. The day prior to the colonoscopy procedure and after the first bowel movement or after 6 hours following administration of the bisacodyl tablets, whichever occurred first, subjects were to drink the 2 liter HalfLytely at a rate of one 8-ounce glass every 10 minutes. The entire solution was to be consumed.<br>Drug: bisacodyl<br>* Two 5 mg bisacodyl tablets were taken in the afternoon on the day prior to the colonoscopy procedure.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of Participants Classified as Successes (Excellent and Good Ratings) According to the Aronchick Scale As Assessed by a Blinded Gastroenterologist | Overall colon cleansing was assessed by a blinded gastroenterologist during the colonoscopy using the Aronchick scale. The Aronchick scale is a 4-step rating scale: inadequate, fair, good, and excellent. Excellent is defined as >90% of mucosa seen, mostly liquid stool, minimal suctioning needed for adequate visualization. Good is defined as >90% of mucosa seen, mostly liquid stool, significant suctioning needed for adequate visualization. | Day 2 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of Participants Classified as Successes (Excellent, Good and Fair Ratings) According to the Ottawa Scale As Assessed by a Blinded Gastroenterologist | Overall colon cleansing was assessed by a blinded gastroenterologist during the colonoscopy using the Ottawa scale, a 5-step rating scale: inadequate, poor, fair, good, and excellent. Excellent is defined as mucosal detail clearly visible; if fluid is present, it is clear and there is almost no stool residue. Good - some turbid fluid or stool residue but mucosal detail still visible; washing and suctioning is not necessary. Fair - turbid fluid or stool residue obscuring mucosal detail. However, mucosal detail becomes visible with suctioning and washing is not necessary. | Day 2 | 
| Percentage of Participants' Responses to the Acceptability and Tolerability Questionnaire: How Easy or Difficult Was It To Consume the Study Drug? | Participants answered the question above on Day 2 prior to the colonoscopy procedure. Answers were on a 5-point scale: very easy, easy, tolerable, difficult, very difficult | Day 2 | 
| Percentage of Participants' Responses to the Acceptability and Tolerability Questionnaire: Were You Able to Consume the Entire Prep As Instructed? | Participants answered the question above on Day 2 prior to the colonoscopy procedure. Answers were on a 2-point scale: yes, no | Day 2 | 
| Percentage of Participants' Responses to the Acceptability and Tolerability Questionnaire: Please Describe Your Overall Experience With the Study Preparation | Participants answered the question above on Day 2 prior to the colonoscopy procedure. Answers were on a 5-point scale: Excellent, Good, Fair, Poor, Bad | Day 2 | 
| Percentage of Participants' Responses to the Acceptability and Tolerability Questionnaire: The Taste of This Study Preparation Was | Participants answered the question above on Day 2 prior to the colonoscopy procedure. Answers were on a 5-point scale: Excellent, Good, Tolerable, Poor, Bad | Day 2 | 
| Percentage of Participants' Responses to the Acceptability and Tolerability Questionnaire: Would You Ask Your Doctor for This Preparation Again if You Need Another Colonoscopy in the Future? | Participants answered the question above on Day 2 prior to the colonoscopy procedure. Answers were on a 2-point scale: yes, no | Day 2 | 
| Percentage of Participants' Responses to the Acceptability and Tolerability Questionnaire: Would You Refuse the Same Preparation Again if it Were to be Prescribed to You in the Future? | Participants answered the question above on Day 2 prior to the colonoscopy procedure. Answers were on a 2-point scale: yes, no | Day 2 | 
| Participants With Treatment-Emergent Adverse Events (TEAEs) | Counts of participants who had TEAEs are summarized in a variety of categories. Severity and relatedness to study drug are in the opinion of the investigator. Severity is rated on a 3-point scale: mild (awareness of signs or symptoms, but no disruption of usual activity), moderate (event sufficient to affect usual activity), and severe (inability to work or perform usual activities). Only severe TEAEs are summarized. Relatedness is assessed on a 4-point scale: unrelated, unlikely, possibly and probably. Both possibly and probably answers are reported as 'related' to study medication. | up to one month | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Bowel Preparation, Colonoscopy