Disorders)
GI Lecture
Movement of food along the GIT (1 Question) Mouth, pharynx, esophagus, stomach, duodenum
Name the sphincters along the GIT and which sections of the GIT they move contents
between:
1) Upper esophageal sphincter- between trachea and esophagus
2) Cardiac sphincter-lower esophageal sphincter (between the esophagus and stomach)
3) Pyloric sphincter- between stomach and duodenum
4) Ileocecal valve- between the small intestine and large
5) Anal sphincter
GERD (2 Questions) Acid coming up in the stomach because of a weakened cardiac sphincter
Potential complications:
• heart burn
• Barret’s Esophagus (precancer),
• ulcers,
• scarring- strictures,
• esophagitis
Function of the lower esophageal sphincter: keeps the stomach acid in the stomach
Upper GI Bleeds (2 Questions)
Causes:
• Ulcers pyloric ulcers
• NSAIDs, Aspirin
• Esophageal varices (enlarged veins)
• Steroids
• GERD
• Inflammation
• Cancer
Signs & symptoms
• dark stools – melena
• red streaks in poop
• hematemesis – bright red vomit
• coffee ground emesis (vomit)
• s/s of shock – hypotension, bradycardia
Gastritis & Peptic Ulcers (4 Questions)
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, Risk factors/causes:
• stress – shock (give PPI to decrease risk of developing an ulcer)
• gastritis (inflammation)
• NG tube damage
• HPylori
• Alcohol/smoking
• NSAIDs, Aspirin, steroids
Laboratory findings of a GI bleed or Peptic Ulcer
• Guaiac test (can’t see bleeds with eyes so use this test)
• Endoscopy -EGD upper scope
• Abdominal x-ray to check for free air
• HPylori -breath test for blood
Differences in symptoms & type of pain between a gastric & duodenal ulcer:
Gastric:
• Pain 1-2 hours after eating. Food stimulates acid production and puts pressure on the ulcer
• Lose weight
Duodenal:
• Pain starts 2-5 hours after meals. Feel better when they eat
• Gain weight
H. pylori treatment regimen:
• Two antibiotics – amoxicillin and metronidazole (Flagyl) or clarithromycin
• Pepto-Bismal and /or PPI (omeprazole)
Gastric Cancer (1 Question)
Risk factors:
• Smoking
• >60 y/o
• Male
• Barret’s Esophagus
• Obesity
• Gastritis
• Family hx
• Smoked and pickled foods
Celiac Disease (1 Question)
Foods to avoid:
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