We explored factors affecting gastric emptying in neurologically impaired (NI) patients using the 13 C-acetate breath test. Methods: Twenty-four NI patients were classified by the presence of gastroesophageal reflux disease (GERD), which was treated by fundoplication plus gastrostomy, or the absence of GERD, which was treated by gastrostomy alone, along with gastric malposition involving cascade stomach and organoaxial gastric volvulus (OGV). Gastric emptying parameters (GEPs), which were the emptying half time (T 1/2 , minute), the lag phase time (T lag , minute), and the gastric emptying coefficient (GEC), were measured before and after surgery. We evaluated the relationship between GEPs and GERD, gastric malposition, and surgical intervention. All data were expressed as the median (interquartile range).
Results:The T 1/2 and GEC of patients with OGV were significantly worse than in those without OGV before surgery (T 1/2 with OGV: 241.3 [154.9, 314.3] vs. T 1/2 without OGV: 113.7 [105.2, 151.4], p = 0.01, GEC with OGV: 3.19 [2.46, 3.28] vs. GEC without OGV: 3.65 [3.24, 3.90], p = 0.02). GERD and cascade stomach were not associated with GEPs. The GEPs of all NI patients showed no significant difference between before and after surgery. The surgical change in T 1/2 (ΔT 1/2 ) in the patients with OGV was significantly lower than in those without OGV (ΔT 1/2 with OGV: −47.1 [−142.7, −22.1] vs. ΔT 1/2 without OGV: −3.78 [−26.6, 12.0], p = 0.03).
Conclusion:Stomach malposition, such as OGV, seems to affect gastric emptying and may be improved by surgical intervention.