1. Bowel cleansing efficacy for colonoscopy: prospective, randomized comparative study of same-day dosing with 1-L and 2-L PEG + ascorbate
- Author
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Sofia Xavier, Francisca Dias de Castro, José Cotter, Carla Sousa, Joana Magalhães, Pedro Boal Carvalho, Bruno Rosa, and Cátia Arieira
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Original article ,medicine.medical_specialty ,Randomization ,Population ,Colonoscopy ,RC799-869 ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Diabetes mellitus ,PEG ratio ,Clinical endpoint ,medicine ,Ingestion ,Pharmacology (medical) ,Dosing ,education ,education.field_of_study ,medicine.diagnostic_test ,business.industry ,technology, industry, and agriculture ,Diseases of the digestive system. Gastroenterology ,medicine.disease ,3. Good health ,030220 oncology & carcinogenesis ,030211 gastroenterology & hepatology ,business - Abstract
Background and study aims Polyethylene glycol (PEG) bowel preparations are effective but associated with high ingestion volume. In this study, 1-L PEG and 2-L PEG preparations were compared in a randomized, colonoscopist-blinded, single-center trial. Patients and methods Patients were aged > 18 years, required colonoscopy, and provided informed consent. Randomization was 1:1 to 1-L PEG or 2-L PEG, based on hospital identification number (odd or even). Preparations were administered using same-day dosing adjusted for colonoscopy start time. The primary endpoint was successful bowel preparation on the Boston Bowel Preparation Scale (BBPS) (no segment scored Results A total of 852 patients were randomized. In the intention-to-treat (ITT) population, significantly more patients had diabetes in the 2-L PEG arm, resulting in the creation of the modified-ITT population (mITT) that excluded diabetic patients to correct the imbalance (1-L PEG, n = 239; 2-L PEG, n = 238). In the mITT, there was no significant difference in successful cleansing between 1-L PEG and 2-L PEG (88.3 % vs. 82.4 %; P = 0.067). Excellent cleansing (BBPS 7–9; no segment Conclusions The lower-volume 1-L PEG was associated with higher levels of excellent bowel cleansing and greater mean segmental scores on the BBPS than 2-L PEG.
- Published
- 2021
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