Upper Gastrointestinal Tract KNH 411. Upper GI – A&P Stomach – Motility Stomach can stretch up to a liter (2oz-32oz) Filling, storage, mixing, emptying.

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Upper Gastrointestinal Tract KNH 411

Upper GI – A&P Stomach – Motility Stomach can stretch up to a liter (2oz-32oz) Filling, storage, mixing, emptying 50 mL empty – stretches to 1000 mL Pyloric sphincter Stomach secretes water, Mucous, HCL © 2007 Thomson - Wadsworth

Pathophysiology - Oral Cavity Nutrition Therapy/Evaluation Increase frequency of meals Bland foods served at room temp. Liberal use of fluids (calorie dense fluids) Preference for cold and frozen foods Oral hygiene Monitor using food diary, observation, or kcal count Monitor weight gain or maintenance

Pathophysiology - Esophagus GERD - reflux of gastric contents into the esophagus Incompetence of LES Increased secretion of gastrin, estrogen, progesterone(loosens sphincter) Hiatal hernia Cigarette smoking Use of medications Foods high in fat, chocolate, spearmint, peppermint, alcohol, caffeine

Pathophysiology - Esophagus GERD - symptoms Dysphagia- difficulty swallowing Heartburn Increased salivation Belching Pain radiating to back, neck, or jaw Aspiration Ulceration Barrett’s esophagus-change in epithelial cells, can result in cancer

Pathophysiology - Esophagus GERD - Treatment Medical management Antacids, histamine blockers, mucosal protectants Modify lifestyle factors Medications – 5 classes Surgery Fundoplication- wrap stomach under esophagus Stretta procedure- transmit radio frequency to lower part of stomach

Pathophysiology - Esophagus GERD - Nutrition Therapy Identify foods that worsen symptoms Avoid fat and caffeine Assess food intake esp. those that reduce LES pressure, or increase gastric acidity Alcohol, pepper, and coffee produces more gastric acids Assess smoking and physical activity Small, frequent meals Weight loss if warranted- fat adds pressure

Pathophysiology - Esophagus Dysphagia – difficulty swallowing Potential causes – GERD Drooling, coughing, choking Weight loss, generalized malnutrition Often stop eating because of difficulties Aspiration(inhalation of food-constant, ongoing) to aspiration pneumonia Treatment requires health care team dg by bedside swallowing, videofluoroscopy, barium swallow

Pathophysiology - Esophagus Dysphagia – Nutrition Therapy Use acceptable textures to develop adequate menu National Dysphagia Diet 1,2,3 1- pudding-like diet (pureed) 2- mechanically altered- soft, liquid, moist 3- advanced- no hard food Use of thickening agents and specialized products Monitor weight, hydration, and nutritional parameters

© 2007 Thomson - Wadsworth Hiatal Hernia

Pathophysiology - Stomach Gastritis (in upper stomach) Inflammation of the gastric mucosa Primary cause: H. pylori bacteria Alcohol, food poisoning, NSAIDs Symptoms: belching, anorexia, abdominal pain, vomiting Type A - automimmune Type B – H. pylori Increases with age, achlorhydria Treat with antibiotics and medications

Pathophysiology - Stomach Peptic ulcer disease (“PUD”) - ulcerations of the gastric mucosa that penetrate submucosa Gastric or duodenal H. pylori NSAIDS, alcohol, smoking Certain foods, genetic link Increased risk of gastric cancer 1 in 4 Americans develop

Pathophysiology - Stomach Peptic Ulcer Disease - Nutrition Restrict only those foods known to increase acid secretion Black and red pepper, caffeine, coffee, alcohol, individually non- tolerated foods Consider timing and size of meal Do not lie down after meals (30-60 minutes after) Small, frequent meals

© 2007 Thomson - Wadsworth

Pathophysiology - Stomach Gastric Surgery - Nutrition Implications Reduced capacity Changes in gastric emptying & transit time Components of digestion altered or lost Decreased oral intake, maldigestion, malabsorption

Pathophysiology - Stomach Gastric Surgery - Dumping Syndrome Increased osmolar load enters small intestine too quickly from stomach Release of hormones, enzymes, other secretions altered Food “dumps” into small intestine

Pathophysiology - Stomach Gastric Surgery - Dumping Syndrome Early dumping – min.; diarrhea, dizziness, weakness, tachycardia Intermediate min.; fermentation of bacteria produces gas, abdominal pain, etc. Late dumping hrs.; hypoglycemia

Pathophysiology - Stomach Gastric Surgery - Dumping Syndrome Other nutritional concerns: vitamin and mineral deficiencies, lack of intrinsic factor, iron deficiency, osteoporosis

Pathophysiology - Stomach Dumping Syndrome - Nutrition “Anti-dumping” diet Slightly higher in protein & fat Avoid simple sugars & lactose Calcium & vitamin D Liquid between meals Small, frequent meals Lie down after meals Assess for weight loss, malabsorption, and steatorrhea

© 2007 Thomson - Wadsworth