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PUD
Lecture 14
22
Pharmacology
Professional
11/03/2012

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Cards

Term
What should be reduced in patients with PUD?
Definition
psychological stress, cigarette smoking, and nonsteroidal antiinflammatory drug (NSAID) use and avoid foods and beverages that exacerbate ulcer symptoms.
Term
How should H. pylori be treated generally for PUD?
Definition
Eradication is recommended
Term
How do PPIs affect NSAIDs?
Definition
PPI cotherapy reduces the risk of NSAID-related gastric and duodenal ulcers and is at least as effective as recommended dosages of misoprostol and superior to the histamine-2 receptor antagonists (H2RA)
Term
Are COX2 selective inhibitors better thank PPI + COX1?
Definition
Standard PPI dosages and a nonselective NSAID are as effective as a selective cyclooxygenase-2 (COX-2) inhibitor in reducing the risk of NSAID-induced ulcers and upper gastrointestinal (GI) complications.
Term
When should misoprostol cotherapy be used?
Definition
The cost effectiveness of misoprostol cotherapy is greatest for patients with the highest risk for GI complications
Term
What is the recommended Tx for severe PUD bleeding?
Definition
The recommended treatment for severe peptic ulcer bleeding after appropriate endoscopic treatment is the intravenous administration of a PPI loading dose followed by a 72-hour continuous infusion with a goal of maintaining an intragastric pH of 6 or greater.
Term
What is SRMB?
Definition
Stress-related mucosal bleeding - seen in critically ill patients. Tx with PPI or H2A IV
Term
For which type of ulcers is the mortality rate higher?
Definition
Gastric ulcers
Term
What are the types/causes of PUD?
Definition
- H. Pylori - duodenum > gastric. pH dependent, superficial
- NSAID - gastric > duodenum, pH independent and deep
- SRMB - acute hospital related. Gastric and superficial
Term
What are the properties of H. Pylori?
Definition
Gram negative, spiral, flagellated bacteria.
Can protect itself from the pH of the stomach.
NOT associated w/ GERD or smoking
**Prevalence increases w/ age
Term
What is the mechanism of an NSAID induced ulcer?
Definition
Direct irritation to the epithelium, inhibition of mucosal prostaglandins
**Upper GI bleeds!
**Risk factors: Age, NSAID use. Use w/ steroids, bisphosphonates, anticoags, SSRIs, smoking, alcohol.
Term
What are complications of long-term PUD?
Definition
- Perforation into peritoneal cavity - Mortality higher in gastric ulcers
- Penetration into an adjacent structure
- Gastric obstruction
Term
What are the differences in presentation between a gastric and duodenal ulcer?
Definition
- Gastric - Food worsens pain
- Duodenal - Relieved by food
Term
How is H. Pylori diagnosed?
Definition
- Endoscopy - Invasive, need a biopsy
- Non-endoscopy - antibodies or urea breath test
**Withhold PPIs, antibiotics, bismuth prior to testing
Term
What are the basic components of an H. Pylori regimen?
Definition
- Antibiotics - Clarithromycin, Metronidazole, Amoxicillin
- Bismuth salt
- Antisecretory agent - PPI preferred.
**Initially: Biaxin + Flagyl + PPI x14 days, then add bismuth.
DO NOT substitute or use a short therapy.
Term
What PPIs and their doses are given to heal an ulcer?
Definition
- Omeprazole 20-40 mg/day
- Lansoprazole 15-30 mg/day
- Rabeprazole 20 mg/day
- Pantoprazole 40 mg/day
- Esomeprazole 20-40 mg/day
Term
What H2 antagonists and their doses are used to heal an ulcer?
Definition
- Cimetidine - 300 mg QID, 400 mg BID, 800 mg HS
- Famotidine - 20 mg BID or 40 mg Hs
- Nizatidine - 150 mg BID or 300 mg HS
- Ranitidine - 150 mg BID or 300 mg HS *** most common.
Term
Which PPIs should not be used with plavix?
Definition
Omeprazole and esomeprazole
Term
What are H2 antagonist doses for maintenence of an ulcer?
Definition
- Cimetidine - 400 or 800 mg HS
- Famotidine - 20 or 40 mg HS
- Nizatidine - 150 or 300 mg HS
- Ranitidine - 150 or 300 mg HS
Term
When should a bismuth quadruple regimen be used?
Definition
When a patient is allergic to PCN
Cannot use w/ impaired kidney fxn
Term
What is sucralfate/Carafate used for in PUD?
Definition
Promotion of mucosal defense - for 4-8week tx of active ulcers. Off label radiation use.
Has aluminum - cannot use in renal disease
**Separate from antacids by 30 min
Bewere of bezoars
Term
What can you do if a patient must take NSAIDs chronically?
Definition
- Add a PPI to regimen
- Don't take ASA
- Concurrent Misoprostol use - 200mg TID - QID. Causes DIARRHEA, especially w/ Mg salts.
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