GI Flashcards
Peptic Ulcer Dz Causes
Causes:
- H. Pylori (90% duodenal ulcers, 75% gastric ulcers)
- NSAIDS & Glucocorticoids
- More common in men 3:1
- >1/2 PPD smkr
- Alcohol and other dietary factors do NOT cause PUD
- Stress?
PUD Signs / Symptoms
- Gnawing epigastric pain
- Relief with eating (duodenal) “RED”
- Pain worsens with eating (gastric) “PEG”
PUD Physical Findings
- Mild epigastric tenderness
- GI Bleeding (20%) Melena, hematemesis, coffee-ground emesis (ususally duodenal ulcer)
- Perforation (5-10%) severe epigastric pain, board-like abd, quiet bowel sounds, rigidity, free air
Are duodenal ulcers more common in the young or the old?
- Duodenal=Young “DIY”
- Gastric=OLD “GO”
Are duodenal ulcers located in the fundus or the antrum of the stomach?
Antrum
3 causes of Perforation
- PUD
- Ruptured Appendix
- Ruptured Diverticula
Melena Definition
Blak, tarry stools
PUD Diagnostics
- Anemia on CBC
- H.Pylori testing
- Consider endoscopy after 6-8 weeks of tx
What time frame should endoscopy be considered for PUD?
After 2-8 weeks of treatment
First line PUD Out-pt Management
H2Antagonists - take at night
- Cimetadine/ tagamet 800mg
- Ranitidine/ zantac 300 mg
- Famotidine/ pepcid 40mg
- Nizatidine/ axid 300mg
Increase to BID then if no improvement, change to PPI
Second Line Out-Pt PUD Management
PPI’s - 30 min before meals in the morning
- Lansoprazole/ Prevacid 15mg
- Rabeprazole/ Aciphex 20mg
- Omeprazole/ Protonix 40mg
- Dexlansoprazole / Dexilant 30mg
- Esmoprazole / Nexium 20mg
List common PPI’s
Lansoprazole
Rabeprazole
Pantoprazole
Omeprazole
*give 30 min before meals*
Mucosal Protective Agents
Give 2 hrs apart from other medications
- Sucralfate 1 gm QID /Carafate requires acidic environment -avoid antacids and H2 blockers
- Bismuth subsalicylate (Pepto-bismol) -tx traveler’s diarrhea and gastroenteritis, direct action against H.Pylori, promotes prostaglandin production, stimulates gastric bicarbonate
- Mistoprostol / Cytotec QID with food - pt’s with RA, prophylaxis against NSAID ulcers, may stimulate uterine contraction and induce abortion
- Antacids- local help with heartburn symptoms, does not reduce gastric acidity
ABD Conditions by Quadrant
LLQ- diverticulitis
RUQ- gallbladder
RLQ-appendix
List common H2 receptor antagonists
Cimetidine
Ranitidine
Famotidine
Nizatidine
*Give at night*
What test is used for H.Pylori?
Breath test
H.Pylori Eradication Therapy Resistance
*Must use combination therapy*
Resistance develops quickly to metronidazole/flagyl and clarithromycin/ biaxin
Does not develop quickly to amoxicillin or tetracycline
H.Pylori Therapy ATB Options
2 ATB’s + either a PPI OR bismuth
- ATB are BID dosing (AOC, MOC, MOA)
A moxicillin + omeprazole + clarithromycin x 7 days
O meprazole
C larithromycin
MOC (Metronidazole + omeprazole+clarithromycin x 7 days)
O meprazole
A moxicllin x 7-14 days
H. pylori therapy Bismuth regimens
Bismuth regimens are QID dosing
Bismuth 2 tabs QID
Metronidazole 250mg QID
Tetracycline 500mg QID
OR
BMT + omeprazole- above regimen +omeprazole 20mg BID x 7 days
What is the recommended anti-ulcer therapy duration after H.Pylori treatment?
Duodenal= Omeprazole or lansoprazole for additional 7 weeks
H2 blockers or sucralfate for 6-8 weeks
What medication is associated with a decrease in nosocomial PNA?
Carafate
What condition can lead to esophageal cancer?
Untreated GERD => Barrett’s esophagus=> cancer
Which mucosal protective agent is used in RA pt’s as prophylaxis against NSAID induced ulcers?
Misoprostol/Cytotec