Validation of SmartPill® wireless motility capsule for gastrointestinal transit time: Intra‐subject variability, software accuracy and comparison with video capsule endoscopy
Abstract
Background There is interest in ultimately combining endoscopy and motility assessments. Gastric emptying (GET), small bowel (SBTT), colon (CTT) and whole gut transit (WGTT) times are conveniently obtained by SmartPill ® wireless motility capsule (WMC) that records luminal pH, temperature and pressure. Reproducibility within same subjects and accuracy of software derived times (MotiliGI ® ) were investigated for diagnostic application. GET and SBTT were separately measured using video capsule endoscopy (VCE). The aim of this investigation was to assess same subject reproducibility of WMC, accuracy of software derived transit times and relate to Pillcam ® SB (small bowel) VCE motility data. Methods Seventy three healthy adults ingested a 260 kcal mixed meal followed by WMC tests. Food intake was permitted after 6 hours. Regional transit data was obtained for GET, SBTT and CTT, the sum yielding WGTT. Nineteen subjects repeated WMC tests 2 or 4 weeks later; a separate 70 underwent VCE while fasted. Key results Visually derived data from WMC yielded GET 3.46±0.27, SBTT 5.15±0.21, CTT 20.76±1.19 and WGTT 29.53±1.28 hours (mean±SEM). Pearson's correlation coefficients (r) against software derived results were: GET 0.78 (P Conclusions and inferences GET, SBTT, CTT and WGTT obtained by WMC are commensurate with literature values, including by other methods. Visually and software derived transit times have strongest correlations for CTT and WGTT. WMC yields longer GET and SBTT than VC…
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Advanced techniques, including antroduodenal‐jejunal manometry, wireless motility capsule, gastric ultrasound, and high‐resolution electrogastrography (EGG), may provide additional pathophysiological insight, particularly in complex or mixed‐pattern cases.
“Advanced techniques, including antroduodenal‑jejunal manometry [71–75], wireless motility capsule [76–79], gastric ultrasound [80–82], and high‑resolution electrogastrography (EGG) [83–87] may provide additional pathophysiological insight, particularly in complex or mixed‑pattern cases.”
From Diabetic gastroparesis: pathophysiology and impact on insulin timing choices (2026) · cites this paper as [78]
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Ileal brake: a sensible food target for appetite control. A review
Maljaars, P. W. J., Peters, H. P. F., Mela, D. J., & Masclee, A. A. M. (2008) · Physiology & Behavior · doi:10.1016/j.physbeh.2008.07.018 · Cited by 451 · see citing works
How to Assess Regional and Whole Gut Transit Time With Wireless Motility Capsule
Lee, Y. Y., Erdogan, A., & Rao, S. S. C. (2014) · Journal of Neurogastroenterology and Motility · doi:10.5056/jnm.2014.20.2.265 · Cited by 187 · see citing works
Gender Differences in Gut Transit Shown with a Newly Developed Radiological Procedure
Sadik, R., Abrahamsson, H., & Stotzer, P.-O. (2003) · Scandinavian Journal of Gastroenterology · doi:10.1080/00365520310000410 · Cited by 183 · see citing works
The Wireless Motility Capsule: a One-Stop Shop for the Evaluation of GI Motility Disorders
Saad, R. J. (2016) · Current Gastroenterology Reports · doi:10.1007/s11894-016-0489-x · Cited by 73 · see citing works
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Defining gastrointestinal transit time using video capsule endoscopy: A study of healthy subjects
O’Grady, J., Murphy, C. L., Barry, L., Shanahan, F., & Buckley, M. (2020) · Endoscopy International Open · doi:10.1055/a-1073-7653 · Cited by 42 · see citing works
Nandhra, G. K., Chaichanavichkij, P., Birch, M., & Scott, S. M. (2023) · Journal of Clinical Medicine · doi:10.3390/jcm12165272 · Cited by 26 · see citing works
Diabetic gastroparesis: pathophysiology and impact on insulin timing choices
Galeano, F., Tumminia, A., Oteri, V., Le Moli, R., Piticchio, T., Scilletta, S., Di Marco, M., Di Pino, A., & Frasca, F. (2026) · Endocrine · doi:10.1007/s12020-026-04693-6
- Authors
- Diaz Tartera, H. O., Webb, D. ‐., Al‐Saffar, A. K., Halim, M. A., Lindberg, G., Sangfelt, P., & Hellström, P. M.
- Affiliations
- Gastroenterology and Hepatology Unit Department of Medical Sciences Uppsala University Uppsala Sweden
- Uppsala University (SE)
- Karolinska University Hospital (SE)
- Corresponding author
- Webb, D.‐L.
- Venue
- Neurogastroenterology & Motility
- Publisher
- Wiley
- Published
- 2017-05-19
- Volume
- 29
- Issue
- 10
- Pages
- 1-9
- ISSN
- 1350-1925 (ISSN-L)
- 1365-2982
- OpenAlex
- W2615056982
- Cited by
- 81
- References
- 4
- Citations by year
- 2026: 7 · 2025: 8 · 2024: 8 · 2023: 7 · 2022: 9 · 2021: 14 · 2020: 10 · 2019: 9 · 2018: 7 · 2017: 2
- FWCI
- 8.03
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neurogastroenterology & Motility (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Sveriges Läkarförbund (SLS‐503131)
- Topics
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
- Health Sciences › Medicine › Gastroenterology › Gastrointestinal Bleeding Diagnosis and Treatment
- Health Sciences › Medicine › Gastroenterology › Gastroesophageal reflux and treatments
- Keywords
- gastrointestinal transit time, gastric emptying time, small bowel transit time, colonic transit time, whole gut transit time, capsule endoscopy, within-person variability, software accuracy
- MeSH terms
- Adult, Aged, Female, Gastrointestinal Motility, Gastrointestinal Transit, Humans, Male, Middle Aged, Software, Reproducibility of Results, Capsule Endoscopy, Young Adult
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