Peptic ulcer disease Flashcards
Duodenal ulcer
Pain before meals and at night
Relieved by eating
Gastric ulcer
Pain is worse when eating
Weight loss
Relieved by antacids
Risk factors
- H. pylori
- NSAIDs, steroids
- Smoking, EtOH
- Stress (GU)
Common site of gastric ulcer
Lesser curvature of gastric antrum
or first part of duodenum
Is duodenal ulcer or gastric ulcer more common?
Duodenal ulcer is 4x more common
Complications of ulcers
- Haemorrhage
- Haematemesis or melaena
- Fe deficiency anaemia
- Perforation: peritonitis
- Gastric outflow obstruction
- Vomiting
- Colic
- Distension
• Malignancy
- Increased risk with H. pylori infection
Which artery is most likely disrupted with a peptic ulcer perforation
Gastric - Splenic artery
Duodenal - Gastroduodenal
Investigations for peptic ulcer
Bloods: FBC, urea (↑ in haemorrhage)
- H. Pylori breath test or stool antigen test or serum antibodies to H. pylori
- OGD (stop PPIs >2wks before)
- Biopsy all ulcers to check for malignancy
• Gastrin levels if Zollinger-Ellison suspected
Management of peptic ulcer disease
Medical:
• OTC antacids: Gaviscon
- H. pylori eradication - amoxicillin + clarithromycin + PPI
- Acid suppression
- PPIs: lansoprazole
- H2RAs: ranitidine
Surgery:
- Vagotomy
- Antrectomy with vagotomy
- Subtotal gastrectomy with Roux en Y
H.Pylori eradication
PPI + Clarithromycin + amoxicillin
Vagotomy
Truncal - ↓ acid secretion directly and via ↓ gastrin as vagus NS not stimulated - Prevents pyloric sphincter relaxation - Combined with pyloroplasty (widening of pylorus) or gastroenterostomy
• Selective
- Vagus nerve only denervated where it supplies
lower oesophagus and stomach
- Nerves of Laterjet (supply pylorus) left intact
Antrectomy with Vagotomy
• Distal half of stomach removed • Anastomosis: - Billroth 1: directly to the duodenum - Billroth 2 /Polya: to small bowel loop with duodenal stump oversewn
When is subtotal gastrectomy with Roux en Y done
Occasionally performed for Zollinger-Ellison
Physical complication of peptic ulcer surgery
Physical: • Reflux or bilious vomiting (improves with time) • Abdominal fullness • Stricture • Stump leakage
Metabolic complications of peptic ulcer surgery
• Dumping syndrome
- Abdo distension, flushing, n/v, fainting, sweating
- Early: osmotic hypovolaemia
- Late: reactive hypoglycaemia
• Blind loop syndrome → malabsorption, diarrhoea
- Overgrowth of bacteria in duodenal stump
• Vitamin deficiency
- ↓ parietal cells → B12 deficiency
- Bypassing proximal SB → Fe + folate deficiency
- Osteoporosis
• Wt. loss: malabsorption of ↓ calories intake