Although disorders of gastrointestinal tract motility are commonly encountered in canine medicine, the diagnosis of these disorders is hampered by a lack of data on gastrointestinal transit times in healthy dogs. To our knowledge, there are no reference ranges available for these measurements to which values for a particular patient could be compared. In particular, with the large range of body sizes in the canine species, there is a lack of undisputed evidence about the influence of body size on gastrointestinal transit times. Although large- and giant-breed dogs reportedly have prolonged GETs, inconsistent results have been reported in studies1–4 conducted to evaluate gastric emptying in dogs of various sizes. Moreover, there is only sparse data available on the relationship between body size and small or large intestinal transit times.3,5–7 Measurements of specific intestinal transit times have been hampered by the lack of techniques that are easy to use for obtaining this data.
A WMC system is a noninvasive method for assessment of gastric and intestinal motility that has recently been approved for use in humans and validated for use in dogs.8,a,b The GET measured by use of the WMC in dogs correlates with that obtained for other methods.8,a,b The WMC is able to detect changes associated with administration of motility-modifying drugs.a After ingestion and during its transit through the gastrointestinal tract, the nondigestible WMC records pH, temperature, and pressure and transmits these data to an external receiver; the information then is downloaded from the receiver and analyzed. The GET, SLBTT, SBTT, LBTT, and TTT are calculated. The purpose of the study reported here was to assess the relationship between body weight and gastrointestinal transit times measured by use of a WMC in healthy dogs.
Body condition score
Gastric emptying time
Large bowel transit time
Migrating motor complex
Small bowel transit time
Small and large bowel transit time
Total transit time
Wireless motility capsule
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