-
what are the gastric stimulants that activates the proton pump
- acetylcholine
- histamine
- gastrin
-
what are the gastric protective substances that diminishes proton pump action
prostaglandins E2 and I2
-
what are the commonly used ways to control excess gastric acid secretions
- antacids
- H2 receptor antagonists
- proton pump inhibitors
-
what are the less common methods in controlling excess gastric acid secretion
- mucosal protective agents
- prostaglandins
- antimuscarinic agents
-
what are the treatments for GERD
- antacids
- H2 antagonists
- PPI
-
what is the treatment for phase I GERD
- lifestyle changes, OTC
- mild: lifestyle changes, antacids, OTC H2 antagonists
-
what is the treatment for phase II GERD
standard/high dose anti-secretory Rx
Mod/Severe: acid suppressive tx; maintenance therapy
-
what is the treatment for phase III GERD
surgical intervention
-
these medications have an MOA that are weak bases that neutralize gastric acids
antacids
-
which antacid may cause constipation
aluminum hydroxide (amphojel)
-
which antacid may be used as antacid or laxative (diarrhea)
magnesium hydroxide (Milk of Magnesia)
-
which antacids have a less acid neutralizing capability compared to the other agents
calcium carbonate (Tums)
-
which antacid needs to be avoided for long term and excessive use due to systemic alkalosis
sodium bicarb
-
which antacid relieves flatulence with a defoaming action (the gas bubbles combine and are more easily freed)
simethicone
-
aluminum hydroxide and magnesium trisilicate contain which acid that creates a foamy layer above the stomach contents (reduces reflux)
alginic acid
-
what are your H2 receptor antagonists
- cimetidine (Tagamet)
- ranitidine (zantac)
- famotidine (Pepcid)
- nizatidine (axid)
-
these medications competitively block the binding of histamine to H2 receptors whereby inhibiting gastric acid secretion induced by histamine
H2 antagonists
-
which class of medications are indicated for peptic ulcers, ZOLLINGER-ELLISON syndrome, acute stress ulcers, and GERD
H2 antagonists
-
which H2 antagonist can act as an antiandrogen causing gynecomastia, galactorrhea, and reduced sperm count
cimetidine (Tagamet)
-
which H2 antagonist does not cause endocrine side effects, does not inhibit the P450 system and requires BID dosing for most indications
ranitidine (zantac)
-
what are you proton pump inhibitors
- omeprazole (Prilosec)- BCF
- esomeprazole (nexium)- BCF
- rabeprazole (aciphex)
- lansoprazole (prevacid)
- pantoprazole (protonix)
- dexlansoprazole (dexilant)
-
which gastric medication class binds to the H+/K+ ATPase enzyme system (proton pump) of the cells suppressing secretion of hydrogen ions (acid)
PPI
-
which medication class is indicated for PUD, erosive esophagitis, zollinger-ellison syndrome, GERD, stress ulcer prophylaxis
PPI's
-
what are the adverse reactions associated with the proton pump inhibitors
- GI discomfort, N/V/D, HA and dizziness
- C DIFF infx association during acid suppression
-
what are the drug/drug interactions associated with proton pump inhibitors
P450 inhibition varies slightly with each agent. ALL PPIs can decrease the absorption of ketoconazole or itraconazole
-
how are proton pump inhibitors to be taken
recommended to take in the morning 15 min to 20 min before breakfast to maximize efficacy
-
what are the drug /drug interactions associated with omeprazole (prilosec)
- clopedigrel (decreased effectiveness of Plavix)
- potential to inhibit the metabolism of warfarin, diazepam and phenytoin
-
which proton pump inhibitor is available in granules (used for PEG? tubes)
lansoprazole (prevacid)
-
which gastric medications decrease gastrointestinal motility (antispasmodic) and inhibit gastric acid secretion
anti-muscarinic agents
-
this class of medication is indicated as an adjunct agent to H2 blockers or PPIs, high doses are required to heal peptic ulcers
anti-muscarinic agents
-
what are the adverse reactions of anti-muscarinic agents
- anticholinergic side effects
- dry mouth, urinary retention, mydriasis
-
what are the cautions/warnings associated with anti-muscarinic agents
glaucoma, GI obstructive disease, and heat prostration in high temps
-
what is the name of your anti-muscarinic agents
hyoscyamine (levsin)
-
which medications MOA is that it is a synthetic, oral prostaglandin E1 analog that has both antisecretory and mucosal protective properties
misoprostol (cytotec)
-
which medication is used for the prevention of NSAID induced gastric ulcers
misoprostol (cytotec)
-
which mucosal protective medication causes diarrhea, abd pain and is a category X due to causing uterine contractions and may cause a miscarriage
misoprostol (cytotec)
-
which mucosal protective medication has a MOA the covers the ulcer site and protects it against acid, also stimulates prostaglandin release
sucralfate (Carafate)
-
how is sucralfate (Carafate) dosed
take before meals and hs- requires acidic
* do not administer with agents that increase gastric pH
-
which medication stimulates motility of the upper GI track without effecting secretions; dopamine antagonist
metoclopramide (reglan)
-
which medication is indicated for GER, N/V from chemotherapy, diabetic gastroparesis
metoclopramide (reglan)
-
which medication can cause CNS side effects, can cause drowsiness and restlessness, can cause drug induced Parkinsonism and tardive dyskinesis
metoclopramide (reglan)
-
how long should H pylori treatment last
10-14 days
*continue antisecretory agent for ~4 weeks for duodenal and 8 weeks for gastric ulcers
-
what are the two popular H pylori treatment options
clarithromycin 500 mg BID, Amoxicillin 1 gm BID, and a PPI BDI
bismuth subsalicylate 2 tabs QID, tetracycline 500mg QID, metronidazole 250mg QID, and PPI BID
* continue PPI or H2 antagonist therapy for 4-8 weeks after eradication therapy
-
what is the #1 drug for H. pylori treatment (both PPI based triple therapy and bismuth based quadruple therapy)
- PPI once or twice daily
- PPI or H2 antagonist once or twice daily
-
what is the failure rate of triple therapy for the eradication of H pylori, due to clarithromycin resistance
20%
-
what are the mechanisms of mucosal injury with NSAID induced ulcers
- direct or topical irritation of gastric epithelium
- systemic inhibition of mucosal prostaglandin synthesis
-
this is a rate- limiting enzyme in the conversions of arachidonic acid to prostaglandins and is inhibited by NSAIDS
cyclooxygenase (COX)
-
this produces protective prostaglandins that regulate physiologic processes such as GI mucosal integrity, platelet homeostasis and renal function
COX-1
-
this is induced by inflammatory stimuli, such as cytokines and prostaglandins involved in inflammation
COX-2
-
what are your anti-emetic 5HT3 antagonists
- ondansetron (Zofran)
- granisetron (kytril)
- dolasetron (anzemet)
-
what is the place in therapy for 5HT3 antagonists
- antiemetic for CA therapy
- N/V following surgery
-
this class of medication improves the response rates of serotonin-receptor antagonists by 15-30% and its place in therapy is for the use in chemotherapy-induced emesis with serotonin blockers
corticosteroids (usually dexamethasone)
-
what are your dopamine antagonists that are used as anti-emetics
- phenothiazines (prochlorperazine (Compazine); promethazine (Phenergan))
- metoclopramide (reglan)
-
which dopamine antagonist used as an anti-emetic, is the effective first line oral, injectable and rectal anti-emetics for inpt and outpt use
phenothiazines (Compazine or Phenergan)
-
this drugs MOA is it blocks dopamine receptors in chemoreceptor trigger zone and cause sedation
phenothiazines (Compazine or Phenergan)
-
what are the side effects of phenothiazines
- HoTN
- restlessness
- extrapyramidal SE
- drowsiness
-
this phenothiazine is indicated for the treatment of nausea and vomiting only
prochlorperazine (Compazine)
-
this phenothiazine is indicated for the treatment of nausea, vomiting and motion sickness
promethazine (Phenergan)
-
this dopamine antagonist is indicated for nausea and vomiting in addition to being a GI stimulant
metoclopramide (reglan)
-
this dopamine antagonist blocks dopamine receptors in the CTZ (chemoreceptor trigger zone) of the CNS, it enhances the response to ACh of tissue in the upper GI tract causing enhanced motility and accelerated gastric emptying without stimulating gastric, biliary, or pancreatic secretions
metoclopramide (reglan)
-
what are the adverse reactions to metoclopramide (reglan)
- drowsiness
- agitation
- confusion
- possible extrapyramidal symptoms
-
this class of medication works to prevent vomiting due to motion sickness
antihistamines
-
what are the different antihistamines used for motion sickness
- meclizine (antivert)
- dimenhydrinate (Dramamine)
- diphenhydramine (Benadryl)
-
which anticholinergic is used to treat motion sickness
scopolamine transdermal
-
which anti-emetic drug augments the antiemetic activity of the 5HT3 receptor antagonists and corticosteroids
aprepitant (emend)
-
this antiemetic was approved for the treatment of anorexia associated with weight loss in AIDS pts and also approved for nausea associated with chemotherapy
THC; dronabinol (marinol)
-
which benzodiazepine antiemetics can be used in anticipatory N/V
lorazepam (Ativan) or alprazolam (Xanax)
-
which benzodiazepine antiemetic is used for pre-treatment in parkinsons patiens and used for post-op N/V and for nausea associated with gastroenteritis
trimethobenzamide (tigan)
-
which class of medications are used to treat severe diarrhea
fluoroquinolones
-
what is the antibiotic therapy for travelers diarrhea
fluoroquinolones or Zithromax or rifampin
-
how is antibiotic associated diarrhea treated
- metronidazole (flagyl)
- oral vancomycin
-
this medication should be considered first line anti-diarreal for acute diarrhea
loperamide (Imodium)
-
this anti-diarrheal will cause opioid activity at high doses so atropine is included to discourage abuse, is contraindicated in acute diarrhea
diphenoxylate (lomotil)
-
this medication prevents travelers diarrhea by anti-inflammatory and anti-bacterial action, has antisecretory, antimicrobial, antacid, and possibly anti-inflammatory properties
bismuth subsalicylate (Pepto-Bismol)
-
what are your bulking agents used in constipation
- metamucil
- fibercon
- citrucel
- bran powder
-
which constipation meds have a prophylactic use in pts who should not strain and for pts on opioid therapy
stool softners (Colace, Surfak)
-
this stool softener may cause lipoid pneumonia if aspirated
mineral oil
-
this class of medications have a place in therapy for acute constipation and in older patients to prevent chronic constipation and fecal impaction
osmotic/saline laxatives
-
what are your osmotic and saline laxative agents
- MOM
- magnesium citrate
- magnesium sulfate
-
this osmotic/saline laxative should be used first due to it being the cheapest but is CI in pts with renal insufficiency
magnesium sulfate
-
what are the adverse effects of osmotic/saline laxatives
-
which medication can be used for chronic use in constipation
miralax
-
what are the short term treatments of constipation
- bisacodyl (dulcolax)
- senna (senokot, exlax)
- cascara (natures remedy)
- Castrol oil (causes severe cramping and diarrhea)
-
which constipation medications induce bowel movements/diarrhea to cleanse the bowel usually within 4 hours
- Polyethylene (GoLye, GoLYTELY)
- sodium phosphate (fleets)
-
this medication is used for acute constipation and for use prior to a medical procedure
fleets enema
-
what are the adverse effects associated with fleets enemas
- hyperphosphatemia
- hypocalcemia
- hypernatremia
- hypokalemia
-
how is constipation predominant IBS treated
lubiprostone (amitiza)
-
this IBS treatment has a MOA that works on the chloride channel activator in the small intestines
lubiprostone (amitiza)
-
how is diarrhea predominant IBS treated
aloesetron (5HT3 serotonin antagonist)
-
this class of medications inhibit peripheral mu opioid receptors without impacting analgesic effects within the CNS
mu-opioid receptor antagonists
-
this mu-opioid is approved for the tx of opioid induced constipation in pts receiving palliative care for advanced illness who have had inadequate response to other agents
methylnaltrexone (relistor)
-
this mu-opioid is approved for short term used to shorten the period of postoperative ileus in hospitalized pts who have undergone small or large bowel resection
alvimopan (entereg)
-
these agents have an MOA that act primarily on the brain (CNS) and perhaps spinal reflexes to relax skeletal muscle by unknown mechanism
anti-spasmodic
-
what are your anti-spasmodic agents
- cyclobenzaprine (flexeril) *BCF
- methocarbamol (robaxin) *BCF
- metaxalone (skelaxin)
- orphenadrine (norflex)
- carisoprodol (soma)
- tizanidine (zanaflex) *both anti-spasmodic and antispasticity
- diazepam (valium) * both anti-spasmodic and antispasticity
-
what are the adverse effects of cyclobenzaprine (flexeril)
- drowsiness
- anti-muscarinic effects (dry mouth, urinary retention, increased IOP)
-
what are the CI associated with cyclobenzaprine (flexeril)
CI in pts with MI, cardiac conduction defects, and pts receiving MAOI
-
what are the clinical uses of cyclobenzaprine (flexeril)
acute local muscle spasms; use as adjunctive tx with PT
-
this anti-spasmodic can lower seizure threshold, especially if used in combination with tramadol
cyclobenzaprine (flexeril)
-
this drugs clinical use is to treat acute local muscle spasm with PT; is approved to treat muscle spasticity associated with tetanus (toxin) poisoning
methocarbamol (robaxin)
-
what are the adverse effects of methocarbamol (robaxin)
- drowsiness
- urine discoloration (brown)
-
which antispasmodic is not administered IV to pts with renal impairment
methocarbamol (robaxin)
-
this antispasmodic is used in the treatment of acute muscle spasms associated with musculoskeletal conditions
metaxalone (skelaxin)
-
this antispasmodic is categorized as an anticholinergic and skeletal muscle relaxant
orphenadrine (norflex)
-
this is a centrally acting alpha 2 agonist that is used for the treatment of muscle spasticity
tizanidine (zanaflex)
-
this class of medications act directly on the muscle fibers altering the influx of calcium and the release of substance P
anti-spasticity
-
what are your anti-spasticity medications
- baclofen (lioresal)
- tizanidine (zanaflex)
- gabapentin (Neurontin)
- tiagabine (gabtril)
- dantrolene sodium (dantrium)
- denervating relaxant (botulinum toxin A)
-
this anti-spasticity is the DOC for multiple sclerosis
baclofen (lioresal)
-
this is the drug of choice for malignant hyperthermia
dantrolene sodium (dantrium)
-
this anti-spasticity MOA reduces skeletal muscle strength by interfering with excitation-contraction coupling in the muscle fibers
dantrolene sodium (dantrium)
-
which anti-spasticity had adverse effects of muscle weakness, sedation, and occasional hepatitis
dantrolene sodium (dantrium)
-
this anti-spasticity (denervating relaxants) has an MOA that temporarily blocks the nerve receptors on the muscle causing a temporary reduction in muscle activity
botulinum toxin A
-
this drug is used in the treatment of cervical dystonias; dynamic muscle contractures in cerebral palsy, blepharospasm, and bladder dysfunction
botulinum toxin a
-
what are your nonopioids
- NSAIDS
- salicylates
- acetaminophen (APAP)
-
what are your opioids used in pain management
- phenanthrenes (morphine-like)
- phenylpiperidines (meperidine-like)
- diphenylheptanes (methadone-like)
-
this class of medications MOA is reversible inhibition of COX 1&2 enzymes resulting in decreased prostaglandin formation
NSAIDS
-
what are the effects of NSAIDS
- analgesia
- anti-inflammatory
- antipyretic
- antiplatelet
-
what type of pts may have a hypersensitivity to NSAIDS
- pts with:
- asthma
- nasal polyps
- chronic urticaria
-
what is the drug interaction between NSAIDS and low dose ASA
increased GI bleeding
-
what is the drug interaction between NSAIDS and ACE-inhibitors
reduce anti-HTN effects
-
what is the drug interaction between NSAIDS and warfarin
increased drug levels and risk of bleeding
-
this NSAID is an irreversible COX 1&2 inhibitor
ASA
-
what are the adverse effects of mild salicylate toxicity
- N/V
- hyperventilation
- H/A
- confusion
- tinnitus
-
what is the treatment for severe salicylate toxicity
- IV fluids
- activated charcoal dialysis
- monitor acid-base and electrolyte balance
-
what is the most commonly used NSAID in the US
ibuprofen
-
this NSAID appears to have the smallest cardiovascular risk of OTCs
naproxen
-
this NSAID appears to have the highest cardiovascular risk, has a sulf component so don't give to pts with a sulfa allergy, is recommended for use in osteoarthritis and RA
celecoxib (Celebrex)
-
what is the only nonacid NSAID, it preferentially inhibits COX-2 over COX-1
meloxicam (Mobic)
-
this NSAID is a potent nonselective COX inhibitorand is the 1st NSAID that showed accelerate closure of PDA
indomethacin (Indocin)
-
which NSAID may effect the tumor necrosis factor and is associated with unique neurologic symptoms (cogwheel rigidity, tremor, and myoclonus)
flurbiprofen (Ansaid)
-
which ophthalmic NSAID is used for the inhibition of intraoperative miosis starting at 2 hours before surgery
flurbiprofen (ocufen)
-
this ophthalmic NSAID is used in postoperative inflammation following cataract extraction
diclofenac (voltaren)
-
this ophthalmic NSAID is used in the relief of ocular itching caused by seasonal allergic conjunctivitis and post operative inflammation
ketorolac (acular)
-
this medications MOA inhibits the synthesis of prostaglandins in the CNS (COX inhibition) and blocks pain impulses in the periphery
acetaminophen
-
what increases bowel motility to speed up elimination of toxic substances
sorbitol
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