GI Flashcards
(41 cards)
What increases the risk of peptic ulcer disease
Countries that have high H pylori infections, nsaid use, older age
What meds can cause peptic ulcers?
NSAIDs and corticosteroids
What are the causes of idiopathic PUD
IBS, gastronomy, smoking, rack cocaine, meth
What are the two major considerations in diagnosing peptic ulcer disease?
Determining whether symptoms are due to PUD and determining the ideology of the ulcer
What two test can you do to find ulcers?
Endoscopy or radiography
What are the traits of H pylori?
It is spiral shaped pH, sensitive, in the mucus layer and surface, epithelial cells of the stomach
What does the H pylori bacteria produce once it’s in the mucosal linings do what does that cause?
Urease which converts Syria in the stomach into ammonium to neutralize stomach acid and allows bacteria to survive
Other than PUD, what does H. pylori also cause an increased risk for?
Gastric adenocarcinoma, and B cell lymphoma of the stomach
How does H. pylori infections present when their symptomatic?
Nausea, vomiting, abdominal pain, heartburn, diarrhea, and halitosis
When is testing for H. pylori indicated
And patient with lymphoma active PUD dyspepsia and adults less than 60 years old, unexplained, iron deficiency, anemia, and one other household members have H pylori
What are the invasive and non-invasive testing for H pylori?
Invasive is an endoscopy obtained biopsy
Non-invasive is a urea breath, test and rapid fecal antigen
What can skew the results of a biopsy urease test?
Patients taking PPI or have recent G.I. bleeding
What is the preferred therapy for treatment naive H pylori infection
A 10-14 day empiric treatment with optimized bismuth quadruple therapy (BQT)
How should you determine if treatment was successful after H pylori treatment?
A urea breath, test or fecal antigen test or upper endoscopy four weeks after treatment and PPI should be withheld for one to two weeks prior to testing for eradication
If a patient fails, H pylori treatment what is the next step?
Salvage therapy
What is the salvage regimen in first line failure for H Pylori
BQT if big previously treated with it, titanium triple therapy or PCAB dual therapy * 14 days.
What medication’s should you avoid use in H pylori salvage regiments
Clarithromycin and levofloxacin
Which drug combination would have the highest likelihood of achieving eradication of H. pylori in a patient that’s allergic to penicillin
PPI metronidazole, tetracycline and Bismith subsalicylate
What are the three stimuli of HCl in the gastric lumen
Acetylcholine, histamine, and gastrin
What do proton pump inhibitors inhibit
H– K – ATPase pump that secretes gastric acid
True or false proton pump inhibitors are more efficacious than H2 blockers
True
Which proton pump inhibitors are the most bioavailable and achieve the highest plasma levels
Lansoprazole Dexlansoprazole, pantoprazole
Which three PPI’s are available over-the-counter
Landsoprazole esomeprazole and omeprazole
What are PPIs indicated in treating
PUD, GERD, gastronoma, prevention of PUD with long term NSAID therapy, dyspepsia, heartburn