title: Confirmation of short solid-food lag phase by continuous monitoring of gastric emptying.
abstract: Reports on the existence of a lag phase before solid-food gastric emptying are conflicting. We studied solid-phase gastric emptying in ten normal-weight male subjects using two opposed cameras and continuous monitoring. Each ingested a 300-g meal containing 99mTc-labeled liver pate. Identical computer-interfaced cameras continuously monitored gastric activity from anterior and posterior projections. Lag phase was determined by three techniques: (1) inspection of the emptying curve; (2) time to a 2% decrease in stomach activity; and (3) the time of visual appearance of duodenal activity. A short lag phase time was found using all methods, averaging 8.6 min. We concluded that a short solid meal lag phase exists that can be missed with conventional radionuclide gastric emptying methods not employing continuous measurements.
authors.affiliation: University of Utah Health Sciences Center, Salt Lake City.
authors.forename: P E
authors.initials: PE
authors.lastname: Christian
authors.forename: F L
authors.initials: FL
authors.lastname: Datz
authors.forename: J G
authors.initials: JG
authors.lastname: Moore
mesh_terms: D005502:Food; D005746:Gastric Emptying / Q000502:physiology*; D006801:Humans; D008297:Male; D013671:Technetium Tc 99m Sulfur Colloid; D013997:Time Factors
chemical_list: D013671:Technetium Tc 99m Sulfur Colloid