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[Intestinal lactase and milk consumption before and after gastrectomy]
Schweizerische Medizinische Wochenschrift
|April 21, 1979
Summary
Lactose intolerance after Billroth II surgery is not caused by reduced lactase levels. Instead, it results from the loss of pyloric function, leading to rapid lactose entry into the small intestine.
Area of Science:
- Gastroenterology
- Digestive Physiology
- Surgical Outcomes
Context:
- Billroth II gastrojejunostomy is a surgical procedure for peptic ulcer disease.
- Postoperative complications can include malabsorption and digestive issues.
- Lactose intolerance is a common gastrointestinal complaint.
Purpose:
- To investigate the relationship between lactase enzyme activity and lactose intolerance following a Billroth II procedure.
- To determine the primary cause of lactose malabsorption after this specific gastric surgery.
Summary:
- Intestinal lactase assays performed before and after the Billroth II procedure showed no significant changes in enzyme levels.
- Postoperative lactose intolerance appears to be linked to the altered gastric emptying and loss of pyloric function.
- Rapid transit of lactose into the jejunum can overwhelm mucosal lactase capacity, especially if baseline levels are low.
Impact:
- This research clarifies the pathophysiology of lactose intolerance post-Billroth II.
- Findings can inform patient counseling and management strategies for individuals undergoing this surgery.
- Highlights the importance of gastric emptying dynamics in nutrient digestion.