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100 Cards in this Set
- Front
- Back
round shaped bacterial
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cocci
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rod shaped bacteria
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bacilli
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oval shaped bacteria
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coccobacilli
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organism can be inhibited by serum drug concentrations
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susceptible
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organism cannot be inhibited by drugs
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resistant
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drug factor that relies on the intact immune system
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bacteriostatic
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drug factor that doesn't rely on the intact immune system
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bactericidal
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term that means the suppression of certain bacteria = increased potential resistance
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collateral damage
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interaction between 2+ agents that results in a greater-than expected effect
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synergism
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interaction between 2+ agents that results in a less-than expected effect
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antagonism
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Penicillin, cephalosporin, B-lactamase inhibitor, carbapenems, monobactams
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B-lactams, which inhibit cell wall synthesis
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MOA of penicillins? Can you take them with food?
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lysis of bacterial cell. All except amoxicillan cannot be taken with food
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AE of penicillin?
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hypersensitivity
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Penicillin G, Penicillin V. Do they have a narrow or broad spectrum of activity?
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natural penicillins. Narrow spectrum
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Nafcillin, Dicloxacillin. Do they have a narrow or broad spectrum of activity? Other note-worthy feature?
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Antistaphylococcal penicillins. Narrow spectrum and penicillinase-resistant
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Ampicillin, Amoxicillin. Do they have a narrow or broad spectrum of activity? Other noteworthy features?
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Aminopenicillins. Broad spectrum and penicillinase sensitive
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Ticarcillin
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carboxy penicillin
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Piperacillin
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Antipseudomonal penicillins
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Most common mechanism of bacterial resistance to penicillins?
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B-lactamase production
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Functions of B-lactamase inhibitor combinations?
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extends the spectrum of coverage: gram -/+ aerobes, gram - anaerobes, and now B-lactamase-producing organism
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Cephalosporins AE, metabolism, side chain?
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Hypersensitivity and a 10% cross reactivity with penicillins. 40% metabolized by liver. MTT side chain prolongs the prothrombin time
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Cefazolin, Cephalexin. Work against what gram bacterial?
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1st generation Cephalosporins. work against gram + bacteria
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Cefoxitin, Cefuroxime axetil
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2nd generation Cephalosporins
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Do cephamycins ony work against aerobes?
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No, also have anaerobic coverage
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Ceftazidime, Ceftriaxone. What's unique about Ceftazidime?
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3rd generation Cephalosporins. Ceftazidime is an anti-pseudomonal agent
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Cefepime. What does it cover?
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4th generation Cephalosporin. Covers gram +/- and anaerobes
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Imipenem, ertapenem, meropenem. Spectrum of activity? AE?
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carbapenems. Broadest spectrum commercially available. May cause hypersensitivity rxns or seizures
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Aztreonam. What does it cover?
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monobactam. moderate to excellent activity against gram - aerobes
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Vancomycin. Spectrum of activity? AE? Half life?
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glycopeptide. Narrow spectrum: only covers against gram -. May cause hypersensitivity, Red Mans Syndrome, ototoxicity, nephrotoxicity. PO absorption is very low; half life = 5 hours - days
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High exposure to which drugs can damage mammalian tissue?
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protein synthesis inhibitors
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Which drug classification undergoes chelation (decreased absorption when taken orally with divalent or trivalent cations?
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Tetracyclines
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Doxycycline? AE? dose-adjusted?
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Tetracycline used to inhibit protein synthesis of bacteria. AE = phototoxicity NOT DOSE-ADJUSTED
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Aminoglycosides must be administered how? Are they metabolized? dose-adjusted? Work against what? AE?
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systemic infections must be treated with parenteral therapy. Not metabolized. DOSE-ADJUSTED for renal impairment. Work against gram - aerobes. AE = nephro/oto toxicity
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Are macrolides bacteriostatic or bacteriocidal? How are erythromycin and azithromycin metabolized? Contraindications?
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bacteriostatic. erythromycin is extenzively metabolized (possible drug interractions via cytochrome P450), and azithromycin is not metabolized. contrain = hypatic dysfunction
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Clindamycin has what spectrum of activity? AE?
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gram + and anaerobes. AE = pseudomembranous colitis
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Tetracyclines, aminoglycosides, macrolides, clindamycin, quinupristin/dalfopristin, linezolid, chlorampenicol
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protein synthesis inhibitors
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Quinupristin is used for what kind of infections?
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multi-drug resistant gram + infections
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Linezolid oral absorption? Spectrum of activity? AE?
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PO = 100%. Used against multi-drug resistant gram + orgamisms. AE = tyramine diet restriction
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Co-trimoxazole? MOA? protein binding? AE?
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sulfa drug. MOA = inhibits DNA, RNA, and protein production. Very highly protein bound. AE = dermatologic (photosensitivity and rash), HIV pts, and drug fever.
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ciprofloxacin, enoxacin, lomefloxacin, norfloxacin, ofloxacin, levofloxacin, trovofloxacin, gatifloxacin, mofloxacin, gemifloxacin. Spectrum of activity? AE? Contraindications?
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floroquinolones. work against very broad agents including anaerobes. AE = prolonged QT interval and phototoxicity. Contrain = pregnancy, nursing mothers, and children under 18
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which classification of drugs is the most highly abused?
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floroquinolones
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Which drugs are associated with increased risk of tendinitis and tendon rupture?
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floroquinolones
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What is the spectrum of activity for metronidazole? AE?
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only works against anaerobes. AE= avoid the use of alcohol disulfram-like reaction)
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Amphotericin B MOA? Spectrum of activity? AE?
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Antifungal agents. Broadest spectrum of activity. MOA = binds to ergosterol. AE = immediate fever, chills, spasm, vomiting, headache, hypoTN. slower toxicity can cause renal impairment
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Flucytosine: dose-adjusted? AE?
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DOSE-ADJUSTED in renal dysfunction. AE = result from 5-FU metabolism; bone marrow toxicity, LFT changes, and toxic enterocolitis
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Amphotericin B and Flucytosine?
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Antifungal agents.
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ketoconazole, itraconazole, fluconazole, voriconazole? AE? Which interacts with CYP450? Which has the lowest effect on hepatic enzymes?
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Antifungal imidazoles (ket) and triazoles. Ket has greater affinity for P450. Itra has less affinity for P450. Flu has low drug interactions because of low effect on hepatic enzymes. AE = immediate rash, VF disturbances, and increased hepatic enzymes
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Caspofungin, Griseofulvin, Terbinafine, Nystatin. What are they for? PO or IV? Which ones cause oral candidiasis? hepatitis? increased LFT? Which ones are used for dermatophytosis? onychomycosis?
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Antifungal echinocandins. Used as salvage therapy and for invasive aspergillosis. IV only.
G- only used for systemic tx of dermatophytosis. AE = hepatits T- used for onychomycosis. AE = increased LFT N- AE = oral candidiasis |
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Foscarnet, gangciclovir, valgangciclovir, cidofovir, fomivirsen
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antiviral agents
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foscarnet is used against which virus? AE?
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cytomegalovirus. AE = renal insufficiency and electrolyte disturbances
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what is a big problem with using ganciclovir? AE?
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resistance is a big problem. AE = myelosuppression, retinal detachment
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is Valganciclovir administered PO or IV? Cidofovir? AE of cidofovir?
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V = PO only
C = IV only. AE = dose-dependant nephrotoxicity |
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What is a big problem with using formivirsen?
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cannot be taken with alternative therapies
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Acyclovir, valacyclovir, famcyclovir, penciclovir, trifluridine.
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antiviral agents used to treat primary or recurrent herpes attacks or as suppressive therapy
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Interferon Alfa. AE What drug does this work synergistically with?
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antiviral agent that treats Hep B and Hep C. AE = flu-like symptoms. Works with Ribavirin
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amantadine, rimantadine.
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antiviral agents
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zanamivir, oseltamavir. AE?
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antiviral agents that work against influenza A and B. AE = GI effects (N&V)
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Briefly explain malaria: where do organisms grow and what happens to RBCs? Which species is the most common / most deadly?
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organisms grow in the liver. RBCs fill with protozoa and BURST! = fever. Most common species is P. falciparum
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99% of malaria treatment are used how? Features?
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They're used in the prophylaxis of malaria and are either chloroquine-resistant or chloroquine-sensitive
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Atovaquone, chloroquine, doxycycline, hydroxychloroquine, mefloquine, primaquine,
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antimalaria drugs
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Which antimalaria drug is started 1-2 days before travelling and ended 7 days after return? Contraindications?
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Atovaquone. Contrain = severe renal impairment
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Which antimalaria drug is started 1-2 weeks before travel, weekly during the trip, and 4 weeks after return? Contraindications?
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chloroquine. Contrain = retinopathy and worse psoriasis
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Which antimalaria drug is used for dormant liver malaria bugs? Contraindications?
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primaquine. Contrain = G6PD-deficiency
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Which antimalaria drug could cause psychosis, depression, and encephalopathy?
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mefloquine
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Which antimalaria drug may cause photosensitivity and GI side effects?
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doxycycline
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Metronidazole, iodoquinol, pentamidine, quinine / quinidine, pyrimethamine / proguanil
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protozoal infection medication
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Which protozoal infection medication fights pneumocystis jiroveci in AIDS patients? AE?
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pentamidine. AE = hypoTN, tachycardia, dizziness, dyspnea, pancreatic toxicity, hypoglycemia
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AE of metronidazole?
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disulfram-like rxn with alcohol
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What is the main problem with quinine and quinidine? AE?
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toxicity. AE = tinnitus, VF defects, QT prolongation, Blackwater fever
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Albendazole, ivermectin, mebendazole? AE of ivermectin? Is mebendazole IV or PO?
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helminthic medications. AE = Mazotti rxn. Mebendazole is a chewable PO because there's only 10% absorption otherwise
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permethrin, malathion?
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antilouse medications (ivermectin also useful for scabies)
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MOA of antacids? Place in therapy? AE?
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MOA = neutralize gastric acid by raising the intragastric pH
PIT = adjunctive therapy for pain relief, not GERD AE = constipation (Al), diarrhea (Mg), gastric distention and belching (CO2) |
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Which two molecules react with HCl to produce CO2?
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Na bicarb and Ca carbonate
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cimetidine, famotidine, nizatidine, ranitidine? MOA? How much acid secretion is inhibited? Half life?
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H2 antagonists. MOA = inhibit histamine receptors on parietal cells of gastric mucosa. Inhibits 60-70% of total gastric secretion and is especially effective at night. Half life depends on the dose (OTC has shorter half life than Rx)
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drug interactions of cimetidine? Place in therapy?
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DI = interferes with CYP450 pathways and endocrine effects
PIT = treatment of DU, GU and GERD |
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Lansoprazole, omeprazole, esomeprazole, rabeprazole, pantoprazole, dexlansoprazole. Administration limitations? DI?
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proton pump inhibitors. Must give on an empty stomach since food decreases absorption by 1/2. They inhibit both fasting and meal-stimulated gastric secretions. DI = might decrease the efficacy of clopidegrel
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metoclopramide? MOA? AE?
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prokinetic agent. MOA = cholinergic stimulation. AE = extra pyramidal syndrome and sedation
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What is the drug regiment for H. pylori?
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2 antibiotics, and 1 acid reducing agent
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AE, Administration limitations, and DI (effects on other meds) of laxatives?
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AE = esophageal/intestinal obstruction
AL = must take with water DI = will decrease the effects of other meds |
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psyllium, methylcellulose, polycarbophil, malt soup extract. AE?
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bulk-forming laxatives. AE = dependency
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Senna, bisacodyl
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stimulant laxatives
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lactulose, sorbitol
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osmotic laxatives
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Docusate sodium, docusate calcium
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stool softners
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loperamide, diphenoxylate + atropine, opium tincture? MOA? Contraindications? AE?
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antiperistaltic antidiarrheals. MOA = inhibits GI peristalsis
Contrain = traveler's diarrhea, pseudomembraneous colitis AE = constipation |
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Kaolin-pectin, polycarbophil, attapulgite, methylcellulose, psyllium
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adsorbent antidiarrheals
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prochlorperazine? MOA? AE?
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phenothiazine (antiemetic agent). MOA = dopamine antagonist. AE = sedation and extrapyramidal / anticholinergic symptoms
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ndansetron, granisetron, dolastrone. AE?
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serotonin antagonists (antiemetic agent). AE = constipation.
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Dimenhydrinate, scopolamine. AE?
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antihistamine/ anticholinergic agents (antiemetic agent). AE = dry mouth, blurry vision, sedation
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simethicone
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anti-foaming agent (anti-flagulent)
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fat soluble vitamins?
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KADE
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this vitamin plays an important role in vision and functions as an antioxidant. What name is given to its form in animal products vs fruits and vegetables? How is it absorbed? Overdose?
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vitamin A. Animal products contain preformed vitamin A, fruits and veggies contain provitamin A carotenoid. It is absorbed as retinol. Too much Vit A = birth defects, liver abnormalities, reduced bone mineral density, CNS disorders. Too much carotinoids turns the skin yellow
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Which vitamin is involved in protein and RBC metabolism and allows the CNS to function efficiently? What foods contain it? What patients need this as a supplement? Overdose?
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Vitamin B6 (pyridoxine). Found in fortified foods. Supplement for patients on INH to treat TB. Too much Vit B6 causes nerve damage
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Which vitamin is bound it protein in food? DI?
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Vitamin B12. Interacts with proton pump inhibitors and H2 antagonists
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Which vitamin functions as an antioxidant, antiHTN, antiviral, immunomodulator? Overdose?
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Vitamin C. Too much Vit C causes bladder / kidney stones
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Which vitamin can be obtained through food or UV light? What is its most active form? What is its physiologically active form? It increases the absorption of which two minerals?
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Vitamin D (most active form is calciferol). physiologically active as 1,25 dihydroxyvitamin D. Increases Ca and (P) absorption
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function of vitamin E?
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antioxidant
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Calcium absorption ___________ as the amount of calcium consumed at a meal increases
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decreases
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High intake of fluoride causes what condition?
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dental fluorosis
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This mineral is important in oxygen transport. 2/3 body content is found where? Deficiency?
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Iron found in hemoglobin. Deficiency causes GI side effects
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Which mineral supports a healthy immune system?
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zinc
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