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White bread as the final preexamination meal improves gastric cleanliness and visualization during magnetic capsule

Yan Song¹, Chao Huang, Hongxue Lu

¹Department of Gastroenterology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.

|March 20, 2026

Abstract:

Suboptimal gastric preparation remains a critical factor limiting visualization efficacy in magnetically controlled capsule endoscopy (MCE). Notably, preliminary observations indicate that patients consuming white bread as their final pre-MCE diet showed improved gastric mucosal visibility. This study therefore seeks to evaluate the association between the final pre-procedural diet and gastric preparation quality in MCE examinations. A total of 230 patients scheduled for MCE were enrolled in this non-randomized controlled cohort study, with 115 patients received white bread as their pre-MCE diet the day preceding the examination, while patients in control group (n = 115) who consumed steamed or boiled rice was 1: 1 matched by age group and helicobacter pylori status. Gastric cleanliness and mucosal visualization quality were assessed by a panel of 3 independent endoscopists. Secondary outcome measures included comparative analysis of procedural duration and diagnostic yield for atrophic gastritis and polyps. The total score of gastric cleanliness in the white bread group was significantly higher than that in the control group, 22.45 versus15.85 (mean difference 6.63, 95% CI 6.05-7.16, P <.001). The total score of mucosal visualization in the white bread group was significantly better than that in the control group, 22.03 versus 13.44, (mean difference 8.59, 95% CI 7.94-9.24, P <.001). The control group had 6% of patients with inadequate cleanliness versus 0% in the white bread group, P = .021. The total examination duration of the white bread group was significantly shorter than that of the control group, 16.48min versus 27.76min (mean difference 11.28, 95% CI 9.75-15.33, P <.001). Consumption of white bread as pre-MCE diet the day preceding the examination was associated with significantly improved gastric cleanliness, as compared with steamed or boiled rice. Further research is needed on more standardized dietary protocols.

Insights

Consuming white bread before magnetically controlled capsule endoscopy (MCE) significantly improves gastric preparation and visualization compared to rice. This dietary change enhances MCE efficacy by ensuring better gastric cleanliness and shorter examination times.

Area of Science:

Gastroenterology
Medical Imaging
Endoscopy

Background:

Suboptimal gastric preparation is a major limitation in magnetically controlled capsule endoscopy (MCE) efficacy.
Preliminary data suggests white bread consumption improves gastric mucosal visibility.

Purpose of the Study:

To evaluate the association between the final pre-procedural diet and gastric preparation quality in MCE.
To compare white bread versus rice diets regarding gastric cleanliness and visualization.

Main Methods:

A non-randomized controlled cohort study involving 230 patients undergoing MCE.
115 patients consumed white bread; 115 consumed steamed or boiled rice as their pre-MCE diet.
Gastric cleanliness and mucosal visualization were assessed by 3 independent endoscopists.

Main Results:

The white bread group showed significantly higher gastric cleanliness (22.45 vs. 15.85) and mucosal visualization scores (22.03 vs. 13.44) compared to the rice group.
Inadequate gastric cleanliness was observed in 6% of the control group versus 0% in the white bread group (P=.021).
Examination duration was significantly shorter in the white bread group (16.48 min vs. 27.76 min).

Conclusions:

Consumption of white bread as a pre-MCE diet is associated with significantly improved gastric cleanliness and visualization.
White bread diet leads to reduced examination duration and better MCE procedural outcomes.
Further research into standardized dietary protocols for MCE is warranted.

Read full analysis

Keywords:

gastric cleanliness magnetically controlled capsule endoscopy visualization white bread

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