Pharm one liners and other high yield pharm Flashcards
Time it takes for amount of drug to fall to half of its value, constant in first order kinetics (majority of drugs)</p>
Half-life (T1/2)
Barbiturates, phenytoin, carbamazepine, and rifampin all do this
Induce CYP450
Cimetidine, ketoconazole, isoniazid, and grapefruit all do this
Inhibit CYP450
Ability of drug to produce the maximal biologic effect
Efficacy
Mechanism of action (MOA) utilizes intracellular receptors
Steroid and hormones
Mechanism of action (MOA) utilizes transmembrane receptors that have intrinsic enzymatic activity
Insulin, EGF, TGFbeta, PDGF, ANP
Antidote used for organophosphate/anticholinesterase poisoning
Atropine, pralidoxime (2-PAM)
Antidote used for acetaminophen (APAP) toxicity
N-acetylcysteine
Antidote used for heparin toxicity
Protamine Sulfate
Antidote used for warfarin toxicity
Vitamin K and Fresh frozen plasma (FFP)
Antidote for tissue plasminogen activator (t-PA), streptokinase
Aminocaproic acid
Antidote used for opioid toxicity
Naloxone (IV), naltrexone (PO)
Antidote used for benzodiazepine toxicity
Flumazenil
Interaction with this drug requires dose reduction of 6-MP
Allopurinol
May protect against doxorubicin cardio-toxicity by chelating iron
Dexrazoxane
Blows DNA (breaks DNA strands), limiting SE is pulmonary fibrosis
Bleomycin
Binds tubulin and prevents the disassembly of microtubules during the M phase of the cell cycle inducing mitotic arrest
Paclitaxel (taxol)
Anti-estrogen used for estrogen receptor + breast cancer
Tamoxifen
Anti-emetics used in association with anti-cancer drugs that are 5-HT3 (serotonin receptor subtype ) antagonist
Odansetron, granisetron, dolasetron, palonosetron
Hormone inhibiting prolactin release
Dopamine
ACTH analog used for diagnosis of patients with corticosteroid abnormality
Cosyntropin
Synthetic analog of ADH hormone used for diabetes insipidus and nocturnal enuresis
Desmopressin (DDAVP)
Agent of choice for the treatment of hypothyroidism
Levothyroxine (T4)
Thioamide less likely to cross placenta, inhibits peripheral conversion of T4 to T3 in high doses, and indicated for pregnant women in 1st trimester
Propylthiouracil (PTU)
Propylthiouracil (PTU) mechanism of action
Inhibits thyroid peroxidase
Some side effects of corticosteroids
Hyperglycemia, Osteopenia, impaired wound healing, inc. risk of infection, inc. appetite, HTN, edema, PUD, euphoria, psychosis
Diuretic used to antagonize aldosterone receptors
Spironolactone
Common SE of spironolactone
Gynecomastia and hyperkalemia
Selective estrogen receptor modulator (SERM) used for prevention of osteoporosis and currently being tested for treatment of breast cancer (Stars study)
Raloxifene
Non-steroidal estrogen agonist causes clear cell adenocarcinoma of the vagina in daughters of women who used it during pregnancy
Diethylstilbestrol (DES)
Converted to more active form DHT by 5 alpha-reductase
Testosterone
Product of proinsulin cleavage used to assess insulin production
C-peptide
Long acting insulin
NPH Insulin
Amino acid derivative for treatment of Type II diabetes
Nateglinide
Increase bone density, also being tested for breast CA tx
Raloxifene (SERM-selective estrogen receptor modulator)
Used intranasally and decreases bone resorption
Calcitonin (salmon prep)
Drug that causes contraction of the uterus
Oxytocin
Distribution of histamine receptors H1, H2, and H3
Smooth muscle and mast cells; stomach, heart, and mast cells; nerve endings, CNS respectively
1st generation antihistamine that is highly sedating
Diphendydramine
2nd generation antihistamines
Fexofenadine, loratadine, and cetirizine
H2 blocker that causes the most interactions with other drugs
Cimetidine
5HT-1D/1B agonist used for migraine headaches
Sumatriptan, naratriptan, and rizatriptan
Agents for reduction of postpartum bleeding
Oxytocin and ergonovine
Agents used in treatment of carcinoid tumor
Cyproheptadine
5HT-3 antagonist used in chemotherapeutic induced emesis
Ondansetron, granisetron, dolasetron and palonosetron
Ergot alkaloid used as an illicit drug
LSD
Dopamine agonist used in hyperprolactinemia
Bromocriptine
Mediator of tissue pain, edema, inactivated by ACE, and may be a contributing factor to the development of angioedema
Bradykinin
Drug causing depletion of substance P (vasodilator)
Capsaicin
Prostaglandins that cause abortions
Prostaglandin E1 (misoprostol), PGE2, and PGF2alpha
Inhibitor of lipoxygenase
Zileuton
Used in pediatrics to maintain patency of ductus arteriosis
PGE1 (Alprostadil)
Prostaglandin used as 2nd line treatment of erectile dysfunction
PGE1 (Alprostadil)
MOA and effect of nitric oxide
Stimulates cGMP which leads to vascular smooth muscle relaxation
Muscarinic antagonist used in COPD
Ipratropium, tiotropium
MOA action of cromolyn
Blocks opening of Cl channels to prevent mast cell degranulation
SE of long term (>5 days) corticosteroid therapy and remedy
Adrenal suppression and weaning slowly, respectively
MOA of fluoroquinolones
Inhibit DNA gyrase (topoisomerase II) and topoisomerase IV
Drug used for MRSA
Vancomycin
Vancomycin MOA
Binds D-Ala-D-Ala on murein monomers and prevent polymerization of the murein monomers
Meningitis prophylaxis in exposed patients
Rifampin
Technique used to diagnose perianal itching, and the drug used to treat it
Scotch tape technique and mebendazole
MOA of sulfonamides
Inhibit dihydropteroate synthase
Cheap wide spectrum antibiotic DOC of otitis media
Amoxicillin
Drug of choice for tx of pseudomembranous colitis
Metronidazole
Anemia caused by trimethoprim
Megaloblastic anemia
DOC for giardia, bacterial vaginosis, pseudomembranous colitis, and trichomonas
Metronidazole
Treatment for TB patients (think RIPE)
Rifampin, Isoniazid, Pyrazinamide, and Ethambutol
Common side effect of Rifampin
Orange urine discoloration
DOC for influenza A and B
Oseltamivir or Zanamivir
DOC for RSV
Ribavirin
HIV antiviral class known to have severe drug interactions by causing inhibition of metabolism
Protease inhibitors
DOC for N. gonorrhea
Ceftriaxone
DOC for herpes and its MOA
Acyclovir; activated by viral thymidine kinase, results in inhibition of viral DNA replication
Anti-bacterials that cause hemolysis in G6PD-deficient patients
Sulfonamides
Reason benzos are used cautiously in pregnancy
Ability to cross the placenta
Antidote to benzodiazepine overdose (antagonist that reverses the CNS effects)
Flumazenil
Agent that is metabolized to acetaldehyde by alcohol dehydrogenase and microsomal ethanol-oxidizing system (MEOS)
Ethanol
System that increases in activity with chronic exposure and may contribute to tolerance
Microsomal ethanol oxidizing system MEOS
The most common neurologic abnormality in chronic alcoholics
Peripheral neuropathy (also excessive alcohol use is associated with HTN, anemia, and MI)