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drugs GI
drugs GI
93
Medical
Graduate
01/28/2012

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Term
agrerssive factors ofpepdtid disease
Definition
acid, epspin bile
Term
defensive factors of bile
Definition
mucous and bicarb secretion, prostaglandins, blood flow ,restitutionafter cellular injury
Term
peptic ulcer drugs subdiciosn
Definition
reduce acidity, and increse mucousal defense
Term
thre agonists of acid secertion
Definition
histamine, acetylcholaine, and gastrin.
Term
final common pathway of acid secretion
Definition
h/k proton pump.
Term
h2 receptor antagonist naming
Definition
cimetidine, ranitidine, famotidien ,nizaditine
Term
h2 receptor agonists pharmacokinetics
Definition
nizatididne has greatest oral bioavailbilty, with short half lives, all have alot of first pass metabolism, Dose dependant DOA.
Term
2 receptor agonist clerance
Definition
combiantion fo hepatic metabolism and kidney.
Term
h2 receptor agonist dose reduciton onsiderations
Definition
in patients with renal sufficiency and in the elderly
Term
h2 receptor agonists pharmacodynamics
Definition
compettivie inbhitiors of histamine- suppress basaland meal stimualted acid secretion.
Term
h2 recepetor selectivity
Definition
highly selective for h2 reeceptors.
Term
h2 agonists clincial utility
Definition
no logner front line, PPI are stronger.

OTC preps are available.
Term
h2 agonists clincial utility
Definition
no logner front line, PPI are stronger.

OTC preps are available.
Term
h2 receptor antagonists GERD
Definition
h2 antagonists is useful for infrequent ( <3 times a week) heartburn of dyspepsia. frequent heartubrn better treated wit PPIs
Term
h2 receptor antagonists GERD
Definition
h2 antagonists is useful for infrequent ( <3 times a week) heartburn of dyspepsia. frequent heartubrn better treated wit PPIs
Term
h2 antagonists in peptic ulcer disease
Definition
ppis largely replace it. however efective for nocturanal acid suppresion. with signiciant ulcer healing.
Term
h2 antagonists adverse effects
Definition
safe drugs. Cimetidie has most side effects- poor clearance in elderly- toxic properties of cimetidine  ; glaactorhea in women, gynecomastia in men., also confusion states. h2 antagonists cross placenta, dontgive to pregnant women, also in breast milk.
Term
h2 antagonist drugi nteractions
Definition
cimetidine only one that is problematic, inhibits manyp cyp enzymes in cluding cyp3a4
Term
PPI names
Definition
omeprazole, esomeprzole Iansoprazole, pantoprazole, rabeprazole.
Term
PPis phramacokinetics
Definition
lipohillic weak base prodrug. Diffuses readily acorssl iid emmbrane, and goes into acidic comparments of secretory canalliculus of parietal cels. There it is converted to active form via protenaation, and forms covalvent Disulfide bonds with H/k atpase- irreversibly inactving enzyme
Term
differneces between different PPIs
Definition
minimal, different drugs are basically same use.
Term
PPI bioavailability
Definition
is decreased severely by food, admiister on empty stomach (1 hr before meal)
Term
ppi DOA
Definition
24 hours , despite halflife of 2-3 hours.

takes 3-4 days to full acid inhibiting potential, also 3-4 days of nto taking drug for full acid secretion to return.
Term
PPI dOA
Definition
Term
PPI metabolism
Definition
hepatically metabolzied , no renal clearance, onlyworry about patients with very severe liver disease.
Term
ppi pharmacodynamics
Definition
pPIs supress both fasting and meal stimualted acid secretion, much betetr htan h2 antagoninsts. inhibit 90-98 percent of 24 hr acid secretion.

Little difference between different PPis for lcincial utility
Term
GERD clincial utility PPI
Definition
most effective agents for treatmetn of nonerosive/erosive GeRD. Once dialy dosing for relief and tissue healingi n most patients. First line therapyfor GERD.
Term
PPI clinical utility peptic ulcer disease
Definition
more rapid symtpom relief adn faster ulcer healing than h2 antagonists
Term
h pylroi ulcers threatpy
Definition
tripletherapy: PPI, clarithromycin, and amoxicillin or metronidzole.
Term
PPI inhibitors clinical utility for NSAID associated ulcers
Definition
if can discontinue NSAIDS h2 antagonists and PPI are equally effectivei n ulcer ealing.

However with conitnued NSAID use PPIs only are used
Term
PPI adverse reactions
Definition
PPIs are safe. GI effects.

total acid block is problematic- increased susceptiblity - particularly enterigus bug int ravle to udnerdeveloped countried, and C. Dif infections in hospitals
Term
antacids types
Definition
magnesium hydroxide and aluminum hydroxide (basicall weak bases).
Term
antacids clinical utility
Definition
too short acting, may promote healing in duodenal ulcersl

weak nuetralizing capacity,

For treatmetnof GERD- may beaffective in symptoamtic treatmetn but wont efefct natural progresison of disease
Term
antacids clinical utility
Definition
too short acting, may promote healing in duodenal ulcersl

weak nuetralizing capacity,

For treatmetnof GERD- may beaffective in symptoamtic treatmetn but wont efefct natural progresison of disease
Term
antacids adverse effects
Definition
magnesium can cause diarrhea, aluminum can be cosntipation.

renal impairtment- may result in catioanbsorption adn systemic alkalosis
Term
sucraflate moa
Definition
viscosu substance insoluble inwater.

Binds to nectoric ulcer tissue creating barreier to acids,pepsin , bile

Possible binding to bile salts (which implicatedi n gastric ulcer formaiton).

Simtaulets protsaglandin syntehiss, which sitmaultes secreiton of bicarb and mucus.
Term
sucraflate uitlity
Definition
Effective in the healing of duodenal ulcers.
Term
sucrafalte concorruent use
Definition
requreis acidic ocnditiosn so cant bet ken with antacids, h2 recpetor antagoinists , or ppis.
Term
collidal bismuth compounds nams
Definition
bismuth subsalicylate and bismuth subcitrate potassium
Term
colloidal bismuth compounds moa
Definition
sleelctive bindign ot ulcer, coating nit and protecting form acid and pepsin.

May also inhbiit pepsin activity, stimatle mucus produciotna nd increase PGsyntehsis.

May have direct antimicrobial activity to H pylori
Term
coloidal bismuth uses
Definition
whe ncombined with antibiotics , h pylori healing rates are increased.

minimal adverse effects
Term
prostaglandin analog name
Definition
misoprostol
Term
prostaglandin analog usage
Definition
prevnetion of nsadi induced ulcers
Term
mistoprostol moa
Definition
stimaulted mucus and bicarb, with a little bit of acid inhibition.
Term
misprostol adverse effects
Definition
diarrhea, and contriandicated in childbearing wome ndue to stimaulti ono hte uterus.
Term
prokientic agents moa
Definition
increase LES Presusre to be us efu lfor GERD.

increases gastric emptying for usrei n gastroparesis or post surgical gastri cemptying
Term
prokineticagnet name
Definition
metoclopramide
Term
metcoloparmide efefcts
Definition
raises LES presusre and accelerate gastric emptying
Term
metocoloparmiade receptor acitons
Definition
dopamine d2 antagonists and serotonin receptor agonist. enters CNS for antiemesis
Term
metcoloparmide clincial uitlity
Definition
sypmatomtic releif in gastricm otor failure.

treamtn of symapotmtic GERD in combo with atnisecretory agents.

antiemetic agnet- for cnacer chemotherpay , medical procedures where gastric contetns may be aspirated.
Term
metocolparmide adverse effects
Definition
extrapyramidal sympotms, anxiety, depresison, other cns symtpoms.

- icnreasign pitauritary lactin, causign galactorrhea, gyecomastia, impotence,menstrual disorders.
Term
bulk forming laxatives name
Definition
metamucel- psyllium
Term
bulk forming laxatives moa
Definition
indegetsticllic hydrophillic colloids absorb water and form bulk that distends colon promoting peristalasis
Term
adverse effects of bulk forming laxatives
Definition
bacterial digestion leads to bloating/gas
Term
stool softeners moa
Definition
softenign of stool permits water and lipids to penetrate
Term
stool softener adminsitration
Definition
orally or rectally
Term
stool softeners name
Definition
colace, glycerin suppository ,a nd mineral oil
Term
osmotic laxxatives moa
Definition
argents are soluble compoudnsth at dont get absorbed, increasing stool liquidity
Term
osmotic laxatives naems
Definition
milk ofm agnesia, sorbitol and lactulose
Term
magnesium citrate
Definition
surgical bowel emptying osmotic laxative
Term
sodium phosphate
Definition
surgical emptyign laxative osmotic
Term
stimulant laxatives
Definition
these agents induce bowel movements bystimaultign enteric nervosu system and secretion of electrolytes/fluid.
Term
stimualtn laxatives name
Definition
aloe, senna, cascara
Term
antidarrheal agents usage
Definition
mild to moderate acute diarrhea, not bloody or high fever though
Term
antidiarrheal agents, name
Definition
diphenoxylate, loepramide
Term
atndiarrheal agents moa
Definition
inbhitie ach release via presynaptic opiod recpetors in ENs.
Term
atndiarrheal agents moa
Definition
inbhitie ach release via presynaptic opiod recpetors in ENs.
Term
irritibale bowel sydnrome : diarrhea symtpoms treatment
Definition
loperamide
Term
IBS consitpaition symtpom treamtnt
Definition
fibert suplpemetnand osmotic laxatives
Term
ibs chronci abodminal pain
Definition
low doses of TCA (amitriptyline, desiparmine)- help withotu altering mood. ,also 5-ht3 ecpetor antagonists, since 50ht3 receptors, actiate pain sensations in enteric systemc
Term
mesalamine
Definition
5-aminosaylic acid
Term
5 aminosalicylates mechanism of action
Definition
nsaid that works topcially in areas of diseased mucosa
Term
aminosalyicylate naems
Definition
sulfalazina, oslalaizne, balsalazide.
Term
5 asa drugs use
Definition
first lineagents for trematnet of milde- meoderate ulcerative colitis, firrst line for mile to moderate crohns diseas einvoling prox colon or distal ileum
Term
5 asa drugs use
Definition
first lineagents for trematnet of milde- meoderate ulcerative colitis, firrst line for mile to moderate crohns diseas einvoling prox colon or distal ileum
Term
sulfalazine adverse effects
Definition
due tosystemic effects of sulfapyrdidine metabolite
Term
glucoroctiouds clincial use
Definition
moderate to sever ibd
Term
most common glucoridtoics for ibd
Definition
prednisone andpredinosolne
Term
hydrcooroistone for ibd
Definition
used as suppository.
Term
budenoside administration
Definition
controlled release oral formulaion. glucoritcoid
Term
budenoside pharmacokinetics
Definition
rapid firs tpass hepatic metaoblism with bioavailabilty of 10 percent
Term
azathioprine,
Definition
purine antimetabolite
Term
6-mercaptopurine moa
Definition
purine antimetabolite
Term
azathiprioen and 6 mercaptourpine use
Definition
used for ulcerative colitis and crohns disease induction and maintenance of remission
Term
methotrexate
Definition
folate antimetabolite to induce and maintain remission in corhns disease
Term
anti tnf names
Definition
influximad, adlimumab, certozliumab
Term
anti tnf tehrpay uses
Definition
for patients with moderate to severe corhns with inadequte repsonset o conventionalt herpaies.
Term
inflaximab use
Definition
only anti tinf used for ulcerative colitis- also only used for tnf refracotyr to other forms of therapy
Term
anti tnf adverse effects
Definition
severe predispostion infeciton i.e. bacterial supresison and Tb, due to th1 suppresive effects
Term
anti integrin therapy moa
Definition
integrins mediate of luekcoyte adheison to vascular walls
Term
natulzumab
Definition
anti itnegrin
Term
adverse effects of antiintegrin therapy
Definition
reactivation of human polyoma virus.
Term
antiintegrin therapy use
Definition
moderate to severe crohsn diseasei npatients who wont respond to anything else.
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