Masaki Suzuki1, Takehiko Yokobori2, Kyoichi Ogata3, Nobuhiro Nakazawa3, Akiharu Kimura3, Norimichi Kogure3, Erito Mochiki4, Hiroyuki Kuwano3. 1. Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. masakick11@gmail.com. 2. Research Program for Omics-Based Medical Science, Division of Integrated Oncology Research, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma, Japan. 3. Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. 4. Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan.
Abstract
PURPOSE: The Roux-en-Y (RY) procedure is used frequently for surgical reconstruction after gastrectomy. However, a minority of patients suffer a serious motility disorder of the Roux and afferent limb postoperatively. We conducted this study to clarify the association between the motility and peristaltic direction of two limbs in conscious dogs. METHODS: We performed distal gastrectomy on five dogs and implanted seven force transducers on the serosal surfaces of the remnant gastric body and afferent and Roux limbs. We then analyzed the electric signals from these force transducers. RESULTS: Migrating contractions were observed in the two limbs, but not in the gastric remnant body. Migrating contractions in the forward direction propagated independently from the most proximal side in each limb. There was no propagation of contraction across the jejunojejunostomy between the two limbs. CONCLUSIONS: Each proximal part of the Roux and afferent limbs has an independent motility pacemaker in conscious dogs after gastrectomy with RY reconstruction.
PURPOSE: The Roux-en-Y (RY) procedure is used frequently for surgical reconstruction after gastrectomy. However, a minority of patients suffer a serious motility disorder of the Roux and afferent limb postoperatively. We conducted this study to clarify the association between the motility and peristaltic direction of two limbs in conscious dogs. METHODS: We performed distal gastrectomy on five dogs and implanted seven force transducers on the serosal surfaces of the remnant gastric body and afferent and Roux limbs. We then analyzed the electric signals from these force transducers. RESULTS: Migrating contractions were observed in the two limbs, but not in the gastric remnant body. Migrating contractions in the forward direction propagated independently from the most proximal side in each limb. There was no propagation of contraction across the jejunojejunostomy between the two limbs. CONCLUSIONS: Each proximal part of the Roux and afferent limbs has an independent motility pacemaker in conscious dogs after gastrectomy with RY reconstruction.