Maagvolume

Maagvolume refers to the volume the stomach can contain at a given moment. It depends on the stomach's size, wall distensibility, and the presence of ingested material. In healthy adults, the fasting gastric volume is small, about 50–100 mL, but the proximal stomach rapidly accommodates food through gastric accommodation, allowing storage with little rise in pressure.

After a meal, the stomach distends as it holds contents. Typical distended volumes for a normal meal are roughly 0.8–1.5 L; individual variation is common, and larger meals may exceed 2 L. Maximum distension depends on wall compliance and regulatory mechanisms.

Maagvolume is measured in clinical and research settings with imaging (MRI, ultrasound, CT) to estimate intragastric volume, or nuclear medicine studies using radiolabeled meals to gauge volume and emptying. Endoscopy or barostat methods are used in specialized research to assess accommodation and compliance.

Clinical relevance: Variation in maagvolume influences appetite and satiety. Procedures that modify volume, such as sleeve gastrectomy or adjustable gastric banding, alter functional stomach capacity and affect digestion and weight loss. Disorders like gastroparesis or obesity-related changes can also affect gastric volume and distension. Understanding maagvolume aids in diagnosing, planning interventions, and studying digestive physiology.