Final GI review Flashcards
Rx that covers that creates a protective coating over esophagus
gavison
the antacid is chewed tabelets that alters the elasticity of mucous covered bubbles
Simethicone
can help with flatulance?
H2 blockers names and dosage
cimitidine 400-800
ranitidine 150
nizatidine 150
famotidine 20
ADE with antacids
alkuria
CaP04 stones
risk of UTI in pts w/ DM
why do you want to avoid taking other medications with antacids
because of the enteric coating medications have may release prematurely
Alka seltzer can cause
alkalosis and should always be avoided in renal failure
H2 blockers are especially effective at
night
at high doses H2 blockers cna cause
reversible thrombocytopenia CNS confusion rare arrhythmia or angioedema
famotidine specifice ADE
HA
cimetidine specific ADE
gynecomastia also a CYP guy so not practical q
PPIs how do they work
irreversibly pink to the H/k-atpase in gastric parietal cell and inhibits 90% of gastric acid keeping pH greater than 4
inidcations PPI and how to use
active ulcer H pylori ZES Barretts take on an empty stomach 30-60 before food
ADE of PPI
n/d/c HA dizzy B12 deficiency respiratory infections increased risk of hip fractures observational MI risk
what is the thing about asians and PPI
have 4x increase in omeprazole do not use especially if on clopidrigrol
which pregnancy category are PPI
B unless omeprazole which is C
what should we give our stress ulcer pt to prevent bleeding in the ICU
NOT AN H2 BLOCKER–> DEATH
only prophylax with famotidine 20 mg
mucosal protective agents for pts with PUD
misprostol, sucralfate, bismuth
what is misoprostol and what is the most important thing about it
PGE1 anaolg binds to pG receptor on parital cell
ABORTS PREGNANCY
CATEGORY X
but you can give for protection in a pt on NSAID
sucralfate
this is for difficult to treat ulcers can use in critically ill ICU pt instead of PPI
must give alone because it attaches to a lot of drugs
which population should we not use sucralfate on
really any pts on a lot of durgs but especially NOT pts on dialysis
wat population should we avoid bismuth in
Avoid in renal –> toxic
two types of quad therapy
PPI BID (Ph >6) + CAMX2days clair, amox, metro
or PPI BID+ BMT4xd = bismuth, metro, tetra.
need to use BMT w/ PNC allergy
when would you use metoclopramide
if failed PPI in GERD
increases LES pressure accelerates gastric emptying and dopamine agonist
cholinomimetic agents for GI motility
bethanechol and neostigmine
cause SLUD
macrolides like erh
how can macrolides work for upper GI hemorrhage
to clean tract prior to endoscopy
ertythromycin=diarrhea
definition of constipation
≥ 2: straining, incomplete evac, ≤ 2 BMs in 1 week. F>M.
drugs that cause constipation
PG synthesis inhibitors, opiates, Antichol (Antihist, Parkinsons drugs, Phenothiazines, TCAs), Muscle bockers (D-tubocurarine, Succinyl), Al antacids, Barium, CCB, Clonidine, Non-K-sparing diuretics (Spirono), IRON.
1st line for constipation
Psyllium. Bulk forming. Use: Constipation, diarrhea, IBS, can lower total cholesterol and LDL
ADE of bulk forming meds like psyllium
Bloating, flatus, OBSTRUCTION, can affect blood sugar
all mush and no push. May not work. Use with laxative.
: Docusate
ADE: skin rash, cramping, throat irritation.
Osmotic laxatives
Magnesium citrate, sodium phosphate, Magnesium hydroxide, Bisacodyl rectal.
Osmotic lax like mag cirtrate should be avoided in
Lyte changes, can increase Mg, AVOID IN CHF, OLD, RENA
bowel prep for colonoscopies
PEG-ES. Drink 4L prior to exam, mix with ice cold water.
Prevention of chronic constipation in pt with cramps without flatulance
: Polyetheylene glycol (Mirilax
very expensive anti constipation med
Lubiprostone (Amitizia, $$). Preg C. Stimulates CHLORIDE channel opening. ADE: Dyspnea
peripheral mu receptor antag for cosntipation
Naloxegol (Movantik)
Dana thinks these are terrible because they can throw people into with-drawl
Pegylated to reduce BBB crossing but still can.
good sample regimen Dana gave us for constipation
Mirilax (for prevention, no cramps), Senna (gentle stimulant laxative), Docusate (stool softener)
NEVER give antidiarrheal for
for bloody diarrhea, high fever, or systemic tox!
1st line for diarrhea
Stop solids 24hr, avoid dairy, oral rehydration if volume depleted
you can fast with this type of diarrhea
osmotic
Bacterial diarrhea in children: FEED THEM
treats diarrhea and constipation
Bismuth
Bismuth ADE
TINNITUS, n/v, GOUT ATTACK
DDI bismuth
Anticoagulants, decreases tetracycline.
opioid agonists
Diphenoxylate with atropine (Lomotil),
Difenoxin + atropine (Motofen),
Loperamide (Immodium, OTC), Paregoric.
Motofen what type of drug is it and what are the ADE
opioid agonists
anti-SLUD, tachy, hyperthermia, esp in kids.
this antidiarrheal durg is Preg C. Fatal arrhythmia if you try to inject/OD
Loperamide
Bile binding resins useful in diarrhea
Cholestyramine
Colestipo
Octreotide can be used for many things , like AIDS-related diarrhea, dumping syndrome whata re some ADE
Sinus brady, A.R., HA, pruritis, hyper/hypoglycemia, hypothyroidism if used long-term, GI discomfort (30-60% in ppl with acromeg), gallstones (rare cholecystitis), steatorrhea, rare ADEK defi
IBS first line
Dietary mod. 2 week trial no lactose or gluten. Eat less gas-producing food, exercise more
IBS second line
SSRI
IBS constipation tx
fiber, NO TCA, Lubriprostone (Amitzia)
Alosetron (Lotronix) can be used for
severe diarrhea IBS with consent
ADE if scopolamine
VERY antichol (Anti-SLUD), hallucinations in elderly!
red
hot
mad
blind
other motion sickness med
Dimenhydrinate (Dramamine), diphenhydramine (Benadryl)
meclizine (Antivert).
ADE: avoid ETOH. Avoid in narrow angle glaucoma, BPH, asthma
only motion sickness for pts iwht narrow angle glaucoma
zofran
Phenothiazines
Prochlorperazine/Compazine, promethazine
Block dopamine and muscarinic receptors in CTZ.
can be used for N/V
prochlorperazine/Compazine, PROMETHAZINE (lil wayne)
SE
EPS (tardive dyskinesia), hypot, LOWER SEIZURE THRESHOLD, hypersensitivity, Compazine makes you really sleepy. Rare: Blood dyscrasias, QT prolong, melanosis, SKIN NECROSIS
most popular benzamide
metoclopromide
how is corticosteroids used for N/V
enhance the effectiveness of zofran
for chemo
5HT3 antagonist
anti n/v
odansetron (ZOFRAN)
can give to pregnant women or chemo pts
ADE of 5ht3
prolonged QT especially in dolasteron
bad tachy too with dolasetron
odansetron and granisetron cause brady
apprepitant or emend is what class of drug
neurokinin receptor antagonist used for N/v
crosses BBB and used for highly emetogenic chemo
dronnabinol is a
cannabinoid and antiemetic
what aminosalicylates could you give for UC
5-ASA
mesalamine -liquid enema
sulfasalazine- need to give with folic acid
balsalazide
osalazine (last line)
mesalamaine ADE
pericarditis, pancreatitis, hepatitis rare
when would you use corticosteroids for IBD
moderate to severe ACTIVE
not for maintenance
prednisone 1-2wek
can be used in pregnancy
azathioprine is what kind of medication
immunosupressive used in Chron’s and UC that allows for the reduction of steroids
azathioprine is CI in
pregnancy (D)
and can’t be used with allopurinol
methotrexate can be used for what form of ibd
Chrons
can TNF inhibitors be used in pregnancy?
yes!
for chron’s and mod/severe UC
can reduce number of fistulas and maintain closure
TNF inhibitors
prevent TH1 response
infliximab
adalimumab
certolizumab
humaizide IgG that can be used for chron’s
natalizumab
monoclocnal AB
adjuncts to pancreatic enzymes include
H2Ra or PPI
bile acid therapy for gallstones
ursodiol
portal hypertension and cirrohsis
propranolol to prevent bleeding
2nd line nitrates
variceal bleed: oreotide
w/ hepatic encephalopathy you need to
limit dietary protein and take lactulose