Asbjørn Mohr Drewes

Regional gastrointestinal contractility parameters using the wireless motility capsule: inter-observer reproducibility and influence of age, gender and study country

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

DOI

  • A. D. Farmer, Aalborg University, Queen Mary University of London, University Hospitals of North Midlands NHS Trust
  • ,
  • A. M.L. Wegeberg, Aalborg University
  • ,
  • B. Brock
  • ,
  • A. R. Hobson, The Functional Gut Clinic
  • ,
  • S. D. Mohammed, Queen Mary University of London
  • ,
  • S. M. Scott, Queen Mary University of London
  • ,
  • C. E. Bruckner-Holt, University Hospitals of North Midlands NHS Trust
  • ,
  • J. R. Semler, Medtronic
  • ,
  • W. L. Hasler, University of Michigan Health System
  • ,
  • P. M. Hellström, Uppsala universitet
  • ,
  • A. M. Drewes
  • C. Brock

Background: The wireless motility capsule concurrently measures temperature, pH and pressure as it traverses the gastrointestinal tract. Aims: To describe normative values for motility/contractility parameters across age, gender and testing centres. Methods: Healthy participants underwent a standardised wireless motility capsule assessment following an overnight fast and consumption of a meal of known nutritional content. Traces were divided into regions of interest and analysed using 2 software packages (MotiliGI and GIMS Data Viewer). Inter-observer agreement was independently assessed by 2 investigators. Results: Normative data for motility/contractility parameters (maximum amplitude, mean peak amplitude, contraction frequency and motility index) are presented for 107 individuals (62 male, median age 40 years, range 18-78). MotiliGI-Gastric, small bowel and colonic maximal contraction amplitude correlated with age (r =.24, P =.01; r =.22, P =.02; and r =.2, P =.04 respectively). Small bowel motility index was higher in females than males (150.4 ± 12 vs 122 ± 7.6, P =.04). Inter-observer agreement was excellent for transit times, pH and contractility/motility parameters. GIMS Data viewer-Gastric, small bowel and colonic log e motility index correlated with the respective area under the contraction curve, total contractions, sum of amplitudes and contraction frequency (all r>.35, P <.0003) but not with transit times. Conclusions: Our analysis provides normative data for motility/contractility parameters. Log motility index summarises a number of measures. In future, the measurement of contractile activity with the wireless motility capsule may potentially aid in the diagnosis of disease states such as visceral myopathic disorders.

OriginalsprogEngelsk
TidsskriftAlimentary Pharmacology and Therapeutics
Vol/bind47
Nummer3
Sider (fra-til)391-400
Antal sider10
ISSN0269-2813
DOI
StatusUdgivet - 1 feb. 2018

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