An overview of pediatric gastroenterology, including the anatomy and physiology of the gastrointestinal system in children, common gastrointestinal disorders, and the importance of specialized care for pediatric patients.
Introduction to Pediatric Gastroenterology
Key concepts, common conditions, diagnostic tools, and management principles for children’s digestive health.
| Aspect | Description |
|---|---|
| Definition | Medical specialty focused on the gastrointestinal (GI), hepatobiliary, and pancreatic systems in patients from birth to 18 years. |
| Goals | • Diagnose and treat acute & chronic GI diseases. • Support growth, nutrition, and development. • Prevent complications that can affect long‑term health. |
| Differences from Adult GI | • Developmental anatomy and physiology. • Age‑specific disease prevalence (e.g., infantile colic, cow‑milk protein allergy). • Dosing and formulation of medications. • Greater emphasis on nutrition and growth monitoring. |
| System | Pediatric Particularities |
|---|---|
| Esophagus | Lower esophageal sphincter tone is lower in infants → higher risk of gastro‑esophageal reflux. |
| Stomach | Faster gastric emptying in neonates; acid production rises sharply after the first month. |
| Small Intestine | Surface area expands dramatically (≈10 m² by age 2); absorptive capacity matures rapidly. |
| Colon | Motility patterns evolve from “infantile” to adult‑type peristalsis by 3 years. |
| Liver | Bile acid synthesis reaches adult levels by 6 months; hepatic enzyme activity (e.g., CYP450) matures over the first 2 years. |
| Pancreas | Exocrine enzyme output reaches adult levels by 1 year; endocrine function (insulin secretion) matures within the first 6 months. |
| Category | Typical Age | Core Features | First‑Line Management |
|---|---|---|---|
| Functional GI | 0‑5 y | Infantile colic, functional abdominal pain, functional dyspepsia, constipation | Reassurance, diet modification, behavioral strategies, osmotic laxatives (e.g., polyethylene glycol) |
| Reflux Disease | <2 y | Regurgitation, irritability, failure to thrive | Positioning, thickened feeds, proton‑pump inhibitor (PPI) for severe cases |
| Cow‑Milk Protein Allergy (CMPA) | 0‑12 m | Vomiting, diarrhea, eczema, blood in stool | Elimination of cow‑milk protein; hypoallergenic formula if breast‑fed |
| Celiac Disease | 6 mo‑2 y | Chronic diarrhea, abdominal distention, growth failure, dermatitis herpetiformis | Strict gluten‑free diet; monitor serology and growth |
| Inflammatory Bowel Disease (IBD) | 10‑15 y | Persistent abdominal pain, bloody diarrhea, weight loss, extra‑intestinal manifestations | Induction (corticosteroids, biologics), maintenance (immunomodulators, biologics) |
| Hepatobiliary | 0‑18 y | Jaundice, hepatomegaly, cholestasis, pruritus | Treat underlying cause (e.g., biliary atresia → Kasai portoenterostomy) |
| Pancreatic Disorders | 0‑5 y | Recurrent pancreatitis, steatorrhea, failure to thrive | Enzyme replacement, pain control, |