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128 Cards in this Set

  • Front
  • Back
What is the most common cause of upper GI bleeds?
Peptic Ulcer Disease
Peptic ulcer disease is often accompanied by?
Dyspepsia
What drug combo can you use to eradicate HP infection?
Antibiotic and acid suppression or antacid combination
What drug can enhance gastric mucosa?
Sulcrafate
H2 RA's are taken how often?
Twice daily for 8-12 weeks
PPI's are taken how often?
once daily 8-12 weeks
Discontinuation of what class of drugs will assist in improving PUD?
NSAIDS
Sucralfate improves mucosal defense but may impede what?
Endoscopic exam
What prophylactic drug can increase prostaglandin defense?
Misoprostol 200mg QID with meals
What class of drugs decrease gastric acid?
PPI's at standard doses or H2RA's at high doses
What drug or combo should you add concomittantly while reducing NSAIDs dose?
PPI or misoprostol
Celecoxib, Rofecoxib, and Valdecoxib are what class of drugs?
Highly selective COX-2 inhibitors
Name 3 relative selective COX 2 agents.
Acetaminophen, salsalate, etodolac
Is an empiric therapy recommended for management of active HP induced ulcers? What is?
No, Multi-drug regimen (two, three, or four drug regimen)
Why is a multi drug regimen chosen? (name a couple)
1. Anticipated patient adherence
2. Eradication rates
3. Least potential for adverse effects
4. Previous treatment failures
5. Potential drug interactions.
In dual drug therapy, Clarithromycin can be combined w/ what 2 drug/drug class?
PPI or Rantidine
Amoxicillin can be combine with what drug class?
PPI
What causes poor eradication rates?
Resistance
When using triple drug therapy, PPI based should include what combo? For how long?
2 antibiotics and 1 PPI. 10-14 days
Give an example of a triple drug therapy PPI based combo.
Amoxicillin & Clarithromycin or metronidazole and any of the zoles: esomeprazole
When using triple drug therapy, RBC based, what drug classes should be considered?
2 antibiotics and rantidine (400mg) bid x 14 days.
Give an example of a triple drug therapy combination.
Clarithromycin plus amoxicillin or
metronidazole and rantidine
or tetracycline and rantidine
In quadruple drug therapy, what class of drug is added to the combination of antibiotic and H2RA or PPI?
Bismuth subsalicylate-based (BSS) and 2 antibiotics like metronidazole PLUS amoxicillin, metronidazole or tetracycline
What is the % of the US population that is affected by GERD?
20%
Does quadruple Drug therapy have a good or poor compliance rate?
Poor: too many drugs!
What is the mechanism of GERD?
A defective lower esophageal sphincter pressure
What causes excess gastric volume, pylorus obstruction pregnancy, tight clothing?
Increased intra-abdominal pressure
In GERD, is their an increase in tone, or a loss of tone?
GERD occurs due to a loss of tone in the esophageal sphincter
What are some names of drugs that can increase risk of GERD?
Anticholinergics, antiparkinsonian, CCB, Benzodiazipines, Estrogens, progesterones, Narcotics, NSAIDS, Nicotine, Nitrates, xanthines
Your patient presents with the following symptoms: Hoarseness, weightloss, wheezing, bleeding, and non-cardiac chest pains. What are these symptoms characteristic of?
Atypical symptoms of GERD
Name some typical symptoms of GERD.
Belching, heartburn, regurgitation of gastric contents, hypersalivation.
Visible damage to the mucosa upon endoscopy can be seen as a complication of untreated GERD. What is this disease called?
Erosive esophagitis and strictures
Metaplasia resulting in replacement of stratified squamous epithelium with columnar glandular cells may occur with untreated GERD. What is this disease called?
Barretts esophagus
What condition may predispose a patient as much as 24%, to esophageal cancer?
Untreated GERD that has lead to Barretts esophagus
Esophageal adenocarcinoma risk is 8x higher in patients with what symptoms?
Heartburn, regurgitation or both alteast once a week.
Out of 13,900 annual diagnoses of esophageal adenocarcinoma,how many are expected to die?
13,000
What is the 5 year survival rate with esophageal adenocarcinoma?
13%
What is the cornerstone of therapy for esophageal adenocarcinoma?
Acid suppresion with medication management
Metoclopramide binds to what type of receptor and is considered what type of agent?
Dopamine antagonist; prokinetic agent
What is the MOA of metoclopramide?
1. Increased gut motility 2. increased LES resting tone
CNS depressants like ETOH and benzodiazipines can cause drug interactions with what agents?
Prokinetic agents
Your patient presents with a history of seizures, and bowel obstruction, a pheochromoctoma, what drug should be avoided in this patient?
Metoclopramide?
The combination of insulin and metoclopromide can cause what?
Altered food absorption
The use of metoclopramide can cause what type of SE in the pediatric and elderly patient population?
Parkinsonian syndrome
What are the MOA of antacids?
They neutralize pH of stomach acid within the lumen
What are some adverse effects of antacids?
Diarrhea or constipation, mineral deficiencies and gastric acid rebound with chronic use, acid base disturbances and electrolyte imbalances in renal insufficiency
Are there any absolute contraindication to antacids?
No
Anatacids have many drug interactions with what medications?
What do these drugs do?
Tetacyclines, quinolones, antibiotics, ketoconazole, digoxin, indomethacin, ferrous sulfate, isoniazid. Decrease absorption
What is the drawback to antacids?
Frequent adminstration q1-2hrs
What is the MOA of H2 receptor antagonist?
Decrease acid secretion by competitive inhibition of histamine receptors in gastric parietal cells
What is a contraindication for H2 receptor antagonists?
Renal insufficiency
Drugs like warfarin, theophylline, diazepam, phenytoin, metronidazole, propanolol all do what when combining them with an H2 antagonist?
They increase the effects of the drugs; cimetidine increases rantidine
What are some draw backs to H2 antagonist? (2)
Tachyphylaxis, increase CNS effects in elderly
In stage I management of GERD, antacids like tums, maalox, gaviscon, or what other drug class can be initiated?
H2 RA's or omeprzole
In stage II -III, what medication would you place your patient on?
H2RA's or PPIs
When do you treat empiracally?
For typical symptoms
For moderate to severe symptoms of GERD, what drug class should you start your patient on?
PPI's
What prostaglandin analog, inhibits acid and protects mucosa, reducing ulcers related to NSAIDS?
Misoprostol
What GU SE does misoprostol cause?
Uterine contractions!
Bismuth compound can reduce stool requency, and does what to ulcers?
Coats them
What drug can blacken stool and tongue?
Colloidal bismuth compund or Bismuth subsalicylate
What are some CNS SE of bismuth?
Ataxia, H/A, confusion, seizures
An example of a bulk forming laxative that absorbs water, and promotes peristalsis is?
Psyllium
What type of laxative may lead to dependence? Give some examples of these.
Stimulants like aloe, senna, castor oil
Your patient has just taken senna and aloe. When do you anticipate a BM?
6-12 hours
MOM, sorbitol, and lactulose are all what type of laxatives?
Osmotic laxatives
When is the onset of action typically seen in osmotic laxatives?
Caution with what?
1-3 hours. Caution with electrolyte abnormalities
Polyethylene glycol is used prior to procedures. How is it mixed and administered?
4 liters of fluid over 2-4 hours
Castor oil is considered what type of laxative?
A stimulant
Mineral oil is considered what type of laxative?
stool softner
Stool softners on a long term use can affect what nutritional status?
Impair absorption of fat soluble vitamins (ADEK)
Antidiarrhearls have what type of effect? What receptors do they inhibit?
Opiod effects. They inhibit cholinergic receptors
Somatostatin AKA ___ is a naturally occuring peptide in the GI tract.
Octreotide
What are some clinical uses for octreotide?
1. Inhibitor of endocrine tumor effects, 2. Diarrhea; at low doses stimulates motility, and high doses inhibits motility
3. GI bleed
What are some adverse effects of octreotide?
Fat soluble vitamin deficiency
Gallstones
Hypothyroidism
Bradycardia
Where in the world is the highest rate of IBD? (Crohns and UC)
Scandinavia
Great Britian
North America
Rectal bleeding is a common symptom of which IBD?
Crohns
Skin lesions and eye involvement is seen in which IBD?
UC
Which IBD involves the ENTIRE GI tract?
Crohns
Which IBD involves the rectum and colon only?
UC
Aminosalicylates like Mesalamine has antiinflammatory properties and contains what?
5 ASA only
Which aminosalicylate comes in enema form?
Rowasa 4g/60ml q 8hrs
Azathioprine/Imuran is considered what class of drug?
An immunosuppressant
Azathioprine decrease metabolism of what?
Purines
What is important to teach patients about Azathioprine?
That response may take several months.
Because Azathioprine is an immunosuppresant drug, what are some adverse effects?
Rash, nausea, diarrhea, and neutropenia
6-MP is a cell cycle specific antineoplastic drug that may also take several months to work. What are SE?
Similar to Azathioprine; rash, nausea, diarrhea, neutropenia
6 bloody stools a day, and signs of toxicity is a ___ stage in UC.
Severe
<4 stools and no systemic disturbance
>4 stools/day min systemic disturbance
Mild
moderate
Hypoalbuminuria, leukocytosis, fever and tachycardia are all signs and symptoms of what disease process?
Toxic megacolon
What is toxic megacolon?
Acute dilation of colon-severe attack of colitis
Aminosalicylate and metronidazole are the treatment for mild ___
CD
For mild UC, what 2 other treatments can be used
Steroid enema and oral steroids
What are the 2 symptoms that differ between UC and CD?
In UC, eye involvement and skin lesions may be involved.
Azathiorprine, oral steroid, 6-MP, Methotextrate, and infliximab are the treatment regimen for moderate?
CD (MIA O6)
What is the treatment regimen for moderate UC?
None
IV steroids, IV cyclosporines and surgery are the treatment regimens for severe?
BOTH CD and UC
Zelnorm is considered the ___ line treatment option for IBS?
3rd
What receptors does Zelnorm bind to?
Selective serotonin AGONIST (5HT4)
Zelnorm is used only on what gender?
Female
What are some complicated side effects of zelnorm?
Abdominal pain, and increased risk of cholecystectomies, diarrhea, H/A
Zelnorm is contraindicated in whom?
Renal or hepatic impairment, gallbladder disorders and bowel obstruction
Your pt presents to the office with c/o IBS. You want to order a first line treatment for her. What would you recommend?
1 TBS of fiber with EACH meal
Your pt with IBS has tried fiber, and now is wanting something more. What can you recommend as 2nd line treatment?
A laxative or an antispasmodic
If your pt has diarrhea IBS, what can you offer as first line management?
Diet modications like lactose free, caffeine free
Loperamide and other antispasmodics are considered what line management in diarrhea IBS?
2nd line management
Adminstering alosetron in the management of Diarrhea IBS, 3rd line treatment can increase the incidence of?
Perforarted bowel
Zelnorm/Tegaserod differs from Alosetron because Alosetron is a selective serotonin ___.
Antagonist
Zelnorm is a serotonin agonist
What is a major SE of Alosetron?
Severe constipation with bowel obstruction!!!!
Immodium, Lomotil, and cholestyramine are all used for the maangement of?
Diarrhea predominant IBS
Lomotil/Dipendoxylate with atropine cause what types of SE?
Anticholinergic side effects: blurred vision, Dry mouth, etc.
Bentyl and Hyoscyamine are used for the the ___ managment of IBS.
Pain management of IBS
Low dose of TCA or SSRI are used for what 2 things?
To relieve pain and diarrhea.
TCA should be avoided in patients who are?
TCA=C=Constipated
Bentyl reduces fluid in the bowel because it acts as an?
Anticholinergic
The release of serotonin as well as the stimulation of the chemoreceptors ,vestibular, and stress can all induce what?
Vomitting
What antiemetic agents are used for acute chemotherapy associated N/V and post op or post radiation N/V
Serotonin 5HT3 ANTAGONSIT
Which 5HT3 antagonist has the longest half life?
Palonesetron (lon 1/2 life)
5HT3 antagonist can cause what cardiac complication?
QT Prolongation
Ondansetron, Granisetron and dolasetron have a short or long 1/2 life?
GOD a short life...1/2 life that is :)
Neurokinin receptor antagonist like Aprepitatn, commonly used with cisplatin permeates the ___ __ ___ and inhibits what?
Neuro=blood brain barrier, and inhibits CYP 450 metabolism
Inhibition of CYP450 metabolism with increase or decrease INR if on warfarin?
Inhibit=decrease INR
Phenothiazines and Butyrophenones are antipsychotics, and inhibit both ___ and ___ receptors.
Dopamine and muscarinic receptors
Inhibition of dopaminergic receptors like with the use of phenothiazine, butyrophenones , prochorperazine, promethazine, droperidol, all can cause hypotension, prolong QT, and?
cause Extrapyramidal SE
What antiemetic causes QT prolongation the most?
Droperidol
Metoclopramide, a benzamide, blocks what receptors?
What are potential SE due to these receptor blockers?
Dopamine receptor blockers.
EPS is a SE
Dronabinol is a ___ aka as an antiemetic and an ___ stimulant.
Cannibinnoid. Appetite stimulant
SE of cannabinoids like Dronabinol are euphoria, dysphoria, sedation, hallucination, increased appetite and?
Dry mouth