Journals / Akademik Gastroenteroloji Dergisi / 2026 / Cilt: 25 Sayı: 1

One-day vs two-day low-residue diets for bowel preparation: A randomized controlled trial assessing colonoscopy quality indicators

Azar Abiyev(Department of Gastroenterology, Lokman Hekim Akay Hospital, Ankara, Turkey)0000-0002-9840-7348
Pages
72–78
Publication Date
2026-04-21
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Colonoscopy, bowel preparation, low-residue diet, adenoma detection rate, dietary duration

📌 3 Key Takeaways

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Objective & Hypothesis:Background and Aims: Adequate bowel preparation is critical for high-quality colonoscopy.
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Key Findings & Data:This study aimed to compare the effectiveness of 1-day versus 2-day low-residue diets regimens in terms of bowel preparation quality and colonoscopy performance.
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Conclusion & Impact:Colonoscopy, bowel preparation, low-residue diet, adenoma detection rate, dietary duration
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Kolonoskopi · kolonoskopi hazırlığı · düşük rezidü diyet

Abstract

Background and Aims: Adequate bowel preparation is critical for high-quality colonoscopy. Although low-residue diets are recommended over clear liquid diets, the optimal duration of low-residue diets remains uncertain. This study aimed to compare the effectiveness of 1-day versus 2-day low-residue diets regimens in terms of bowel preparation quality and colonoscopy performance. Materials and Method: In this single-blind, randomized controlled trial, 179 patients scheduled for elective colonoscopy were assigned to either a 1-day (n = 89) or 2-day (n = 90) low-residue diets regimen, followed by a split-dose magnesium citrate with sodium picosulfate preparation. The primary outcome was bowel cleanliness assessed using the Boston Bowel Preparation Scale. Secondary outcomes included insertion and withdrawal times, cecal and ileal intubation rates, polyp detection rate, and adenoma detection rate. Results: Boston Bowel Preparation Scale total and segmental scores were similar between groups, except for significantly higher left colon scores in the 1-day low-residue diets group (p = 0.02). Insertion time was shorter in the 1-day group (4.61 vs. 4.83 minutes, p = 0.03), while withdrawal time, polyp detection rate, and adenoma detection rate were comparable (adenoma detection rate: 42.6% vs. 44.4%, p=0.48). No patient-related factors were significantly associated with bowel preparation quality. Conclusion: A 1-day low-residue diets regimen is as effective as a 2-day regimen for bowel cleansing and does not compromise colonoscopy performance. Shorter dietary restriction may enhance patient comfort without affecting procedure quality. Colonoscopy, bowel preparation, low-residue diet, adenoma detection rate, dietary duration

Özet

Giriş ve Amaç: Yüksek kaliteli kolonoskopi için yeterli bağırsak hazırlığı kritik öneme sahiptir. Berrak sıvı diyetlere kıyasla düşük rezidü diyetler önerilse de, düşük rezidü diyetlerin optimal süresi belirsizliğini korumaktadır. Bu çalışma, bağırsak hazırlığı kalitesi ve kolonoskopi performansı açısından 1 günlük ve 2 günlük düşük rezidü diyet rejimlerinin etkinliğini karşılaştırmayı amaçlamaktadır. Gereç ve Yöntem: Bu tek kör, randomize kontrollü çalışmada, elektif kolonoskopi planlanan 179 hasta 1 günlük (n = 89) veya 2 günlük (n = 90) düşük rezidü diyet rejimine ve ardından sodyum pikosülfat preparatı ile bölünmüş doz magnezyum sitrat rejimine atanmıştır. Birincil sonlanım, Boston Bağırsak Hazırlığı Ölçeği kullanılarak değerlendirilen bağırsak temizliğiydi. İkincil sonlanımlar arasında giriş ve çıkış süreleri, çekal ve ileal entübasyon oranları, polip tespit oranı ve adenom tespit oranı yer almıştır. Bulgular: Boston Bağırsak Hazırlığı Ölçeği toplam ve segmental skorları, 1 günlük düşük rezidü diyet grubunda anlamlı derecede daha yüksek sol kolon skorları dışında, gruplar arasında benzerdi (p = 0.02). Giriş süresi 1 günlük grupta daha kısaydı (4.61'e karşı 4.83 dakika, p = 0.03), çıkış süresi, polip tespit oranı ve adenom tespit oranı ise benzerdi (adenom tespit oranı: %42.6'ya karşı %44.4, p=0.48). Hasta ile ilgili hiçbir faktör bağırsak temizliği kalitesiyle anlamlı bir şekilde ilişkili değildi. Sonuç: Bir günlük düşük rezidü diyet rejimi, bağırsak temizliği için 2 günlük rejim kadar etkilidir ve kolonoskopi performansını etkilemez. Daha kısa süreli diyet kısıtlaması, işlem kalitesini etkilemeden hasta konforunu artırabilir.

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Cite This Article

Abiyev, A. (2026). One-day vs two-day low-residue diets for bowel preparation: A randomized controlled trial assessing colonoscopy quality indicators. Akademik Gastroenteroloji Dergisi, Cilt: 25 Sayı: 1, 72–78. https://doi.org/10.17941/agd.1904351

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