This document discusses gastrointestinal procedures including gastrostomy, vagotomy, and gastrectomy. It describes the relevant anatomy and physiology of the stomach. Gastrostomy involves placing a feeding tube into the stomach and can be done openly or percutaneously. Vagotomy involves dividing the vagus nerves to reduce acid secretion and is often combined with drainage procedures. Gastrectomy removes part of the stomach, with options including Billroth I and II procedures. Complications of these surgeries include bleeding, leakage, obstruction, and nutritional deficiencies. Overall, these procedures provide satisfactory relief of symptoms in 80% of patients.