Reproducibility of antroduodenal motility during prolonged ambulatory recording

Ambulatory recording of antroduodenal manometry is a novel technique with s everal advantages over standard stationary manometry recording. Although th e feasibility of this technique in clinical practice has been demonstrated, reproducibility of antroduodenal motility recorded by means of ambulatory manometry has not been investigated. To test whether antroduodenal motility recorded by ambulatory manometry is reproducible, we performed two 24-h am bulatory antroduodenal manometry recordings in 18 healthy subjects accordin g to an identical protocol with a I-week interval. Motility was recorded wi th a Eve-channel solid-state catheter. Postprandial motility was recorded a fter consumption of two test meals and interdigestive motility was recorded nocturnally. Postprandial antroduodenal motor characteristics were identic al between the separate recordings. The number and duration of nocturnal cy cles of the interdigestive migrating motor complex were also in the same ra nge. Phase III characteristics in general were not different between the tw o recordings. Only minor alterations were observed in the duration of phase III motor fronts with duodenal onset and in the number of interdigestive c ycles concluded by duodenal onset phase III. Parameters obtained by qualita tive analysis were comparable between the two recordings. The antroduodenal motility pattern, when measured by ambulatory recording with solid state c atheters under standardized conditions, is very reproducible.