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Pharm
Block 3 - ALL
247
Aerospace Engineering
1st Grade
03/01/2010

Additional Aerospace Engineering Flashcards

 


 

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Term
Penicillins PKs
Definition
absorption impeded by food, except for amoxicillin; excreted via kidney
Term
Penicillin G (IM*) and V (oral): spectrum
Definition
Gram positives, Neisseria and spirochetes
Term
Dicloxacillin, Nafcillin, oxacillin
Definition
penicillinase-resistant penicillins --> given orally to treat resistant staph*
Term
Ampicillin, Amoxicillin
Definition
Spectrum now includes many gram negatives; given orally
Ampicillin to tx Listeria
Amoxicilin - BE prophylaxis
Term
Carbenicillin, Ticarcillin, Pipercillin
Definition
anti-pseudomonas and proteus; given IV
Term
Mezlocillin
Definition
tx klebsiella and pseudomonas
Term
1st generation cephalosporins*
Definition
gram positive cocci, Proteus, E coli, Klebsiella (PEcK)
Term
2nd generation cephalosporins*
Definition
some gram +, PEcK, and Haemophilus, Enterobacter, Neisseria
Term
3rd generation cephalosporins*
Definition
Haemophilus, Bacteroides fragilis and pseudomonas; more resistant to B-lactamase
Term
Cefazolin
Definition
1st gen IM for surgical prophylaxis
Term
Cefoxitin
Definition
2nd gen IV for anaerobes, B. fragilis
Term
Cefuroxime
Definition
2nd gen IV for H flu
Term
Cefotaxime
Definition
3rd gen IV for H flu
Term
Ceftriaxone
Definition
3rd gen IV for H flu and gonorrhea; excreted in BILE
Term
Ceftazidime
Definition
3rd gen IV for Pseudomonas
Term
Cephalosporin Toxicity
Definition
Hypersensitivity, GI disturbances (if PO), renal impairment, thrombophlebitis, and Bleeding (give vit K)
Term
Cephalosporin indications
Definition
UTIs, Klebsiella, resistant staph, Gram neg sepsis (combined with aminoglycoside)
Term
Imipenem/cilastatin: MOA
Definition
Carbapenems that bind PBP-2 and transpeptidase
Term
Imipenem/cilastatin
Definition
Broad spectrum (gram+, gram-, pseudomonas, Bacteroides); Resistance (E. faecium, MRSA, C. dificile); IV, can penetrate CNS; coadminister w/ Cilastatin to increase availability
Term
Erythromycin*
Definition
binds 50s* ribosome (b-static*); Tx Gram+*, corynebacterium, pneumonia; very acid labile; increased penetration w/ inflammation; Liver metabolism
Term
Erythromycin: toxicity
Definition
Inhibits CYP3A4; GI IRRITATION* (#1 problem)
Term
Clarithromycin
Definition
Acid stable macrolide with less GI disturbances but still inhibits p450
Term
Azithromycin
Definition
Acid stable macrolide with no major toxicity or interactions; more potent too
Term
Ketolides (telithromycin)
Definition
Use for macrolide-resistant bacteria as it has higher affinity for ribosome and less for efflux pump; inhibits p450
Term
Macrolide use
Definition
Mycoplasma pneumoniae, Legionnaires, pregnancy chlamydia, Diphtheria
Term
Clindamycin
Definition
50s ribosome so antagonistic w/ macrolides; gram+, bacteroides, anaerobes (clostridium always resistant); liver metabolism
Term
Clindamycin toxicity
Definition
AAC (pseudomembranous colitis)
Term
Vancomycin
Definition
B-cidal by binding D-ala-D-ala; tx resistant Gram+ only esp in soft tissue and bone; tx MRSA and AAC
Term
Vancomycin toxicity
Definition
Ototoxicity (2gm/day max dose), nephrotoxicity
Term
Linezolid
Definition
B-static for staph and B-cidal for strep; binds 50s subunit; Tx MRSA and VRE
Term
Linezolid toxicity
Definition
hematologic toxicity
Term
Tetracyclines (doxy-, mino-, tige-)
Definition
Gram+/- and rickettsiae, chlamydia, spirochetes*, and mycoplasma; binds 30s ribosome*, b-static; major resistance via efflux pump* (plasmid); DC and MOC best orally though affected by divalent cations; only TC and MOC excreted renally (use TGC,DC in renal failure)
Term
Tigecycline
Definition
very broad spectrum (MRSA, VRE), IV only, long half life, non renal
Term
Tetracyclines toxicity
Definition
Hypo-mineralization of bone*, teeth pigmentation + enamal hypoplasia, FATAL hepatotoxicity in preggers (TC,DC)
Term
Aminoglycosides
Definition
Passive diffusion via porins then active transport (O2 mediated), binds S12 of 30s ribosome*, B-cidal*; active against enteric gram- and aerobes; IV use, distributes extracellularly; renal excretion
Term
Aminoglycosides (Gentamicin, Neomycin, Amikacin, Tobramycin, Streptomycin) toxicity*
Definition
Give once daily due to many side effects: Ototoxicity* (vestibular via Genta-, auditory via Kana-), nephrotoxicity (Neo- esp*), and Neuromuscular blocking action*
Term
Gentamicin
Definition
Serious life threating infections that are refractory to other antibiotics (pseudo, ecoli, proteus, klebsiella, enterobacter)
Term
Quinolones* (Ciprofloxacin, trovafloxacin)
Definition
Inhibits topoisomerase II*, B-cidal*; tx anthrax and orally for pseudomonas + gram-
Term
Quinolone toxicity
Definition
GI, CNS disturbances, Inhibits p450 pathway, Avoid in preggers and kids
Term
trovafloxacin
Definition
broader spectrum including anaerobes such as B. fragilis; still excreted in bile
Term
Sulfonamides-trimethoprim
Definition
Blocks folic acid synthesis*; tx UTI, pneumonia, MRSA, PCP, shigellosis, H flu
Term
Methenamine
Definition
decomposes at pH <5.5 in urine to produce formaldehyde; given orally and metabolized in liver; some GI problems
Term
Nitrofurantoin
Definition
same as methenamine but used just for drug-resistant E. coli; BIRTH DEFECTS
Term
Metronidazole
Definition
Anaerobes only (and trichomonas) can reduce nitro group to give metabolite* that inhibits DNA replication; taken orally, distributes well
Term
Metronidazole toxicity
Definition
Disulfiram reaction with alcohol, GI troubles
Term
Secondline TB drugs
Definition
with 2 first line agents: ethionamide, quinolone, capreomycin, PAS
Term
TB and pregnancy*
Definition
Avoid Pyrazinamide, aminoglycosides, quinolones, ethionamide
Term
TB meningitis*
Definition
Pyrazinamide, ethionamide, isoniazid
Term
Isoniazid
Definition
Most active; B-cidal; gets into CSF; Toxicity is hepatitis*, give pyridoxine
Term
Rifampin*, Rifabutin
Definition
B-cidal both intra/extracellular; binds beta-subunit of RNA polymerase*; Toxicity: Orange secretions, hepatitis*, thrombocytopenia, rash, drug interactions with oral contraceptives (p450 inducer is rifampin)*
Term
HIV and TB treatment
Definition
Rifampin contraindicated in HIV patients use Rifabutin (less potent p450 inhibitor
Term
Ethambutol*
Definition
B-static; blocks arabinosyl transferases; synergistic wtih rifampin; poor penetration of cns; excreted in urine; Toxicity is loss of visual acuity and R/G color blindness*; dont give to children
Term
Streptomycin*
Definition
B-cidal for extracellular* TB; toxicity is ototoxicity and nephrotoxicity
Term
Pyrazinamide*
Definition
Intracellular* TB; B-cidal*; toxicity is hepatitis
Term
Ethionamide
Definition
blocks mycolic acid synthesis; GI and neuro toxicity --> dont give to preggers
Term
Levo and moxifloxacin
Definition
Second line agent for TB
Term
Clarithromycin* (macrolides) to treat TB
Definition
Activity against MAC and rapid growers
Term
Clofazimine
Definition
phenazine dye that may alter DNA fxn; Leprosy drug; anti-inflammatory + prevents development of erythema nodosum; toxicity is red-black discoloration of skin
Term
MAC tx
Definition
amikacin, quinolone, clarithromycin*, rifabutin
Term
Tx for chronic wound infection MOTTs*
Definition
Amikacin, cephalosporins, imipenem
Term
Dapsone
Definition
Sulfa-related drug; disrupts folate synthesis; excreted in urine; combo treat leprosy w/ rifampin and clofazimine; toxicity is hemolysis + methemoglobinemia
Term
Amphotericin B*
Definition
Binds to ergosterol* leading to cell death*; IV for systemic disease but poorly for CNS penetration; broad spectrum for candida, crypto, histo, blasto, coccidio
Term
Amphotericin B toxicity
Definition
Renal impairment (dec perfusion, dec EPO, RTA), abnormal liver fxn, infusion related toxicity
Term
Nystatin
Definition
binds ergosterol for cell death; ONLY topical for oral thrush and vaginal thrush; too toxic
Term
Azoles
Definition
Imi- have more side effects, Tri- slower metabolism; Reduce ergosterol byosynthesis*; f-static*, inhibit p450
Term
Ketoconazole
Definition
Oral, inhibits adrenal and gonadal steroid synthesis*, p450 alteration; teratogenic; NOT USED anymore
Term
Itraconazole*
Definition
reduces ergosterol biosynthesis*; Oral, NO p450 effect; tx dermatophytoses and onchomycoses; aspergillus, histo, blasto, sporo
Term
Fluconazole
Definition
Good CNS penetration, most water soluble; Used for Cryto meningitis and prophylactically for bone marrow disease
Term
Voriconazole
Definition
similar to itra-; Excellent activity against candida
Term
Clotrimazole*
Definition
topical; lozenges for oral and vaginal thrush
Term
Miconazole
Definition
topical for athletes foot
Term
Flucytosine*
Definition
deamidated to 5-FU which blocks DNA/RNA synthesis*; f-static*; high resistance, used to treat crypto meningitis with Ampho B; Tox: antineoplastic, bone marrow damage
Term
Griseofulvin
Definition
Orally as a suspension to treat dermatophytic infections*; disrupts mitotic spindle esp polymerized microtubles and keratin
Term
Terbinafine
Definition
inhibits squalene epoxide interfering with ergosterol biosynthesis; f-cidal; orally to treat nail fungus but takes 3 months
Term
caspofungin
Definition
inhibits B-glucan preventing formation of fungal cell wall; for severe refractory candidiasis and aspergillosis; Toxicity includes phlebitis, fever, chills, teratogenic
Term
Chloroquine
Definition
DOC for most plasmodium; interferes with heme detoxification by plasmodium*; little toxicity if oral
Term
Primaquine
Definition
DOC for hypnozoites from vivax and ovale; oral; toxicity is hemolytic anemia in
Term
Quinine + tetracycline
Definition
Chloroquine resistant P falciparum; synergistic relationship; oral; Toxicity: low dose (cinchonism- visual hearing disturbances), high dose (GI, CV, dermal)
Term
Atovaquone + proguanil*
Definition
tx chloroquine resistant malaria; Atovaquone inhibits mitochondrial fxn; proguanil inhibits DHFR
Term
Artemisinin
Definition
chloroquine-resistant malaria; well tolerated
Term
Pyrimethamine
Definition
Always given with sulfa b/c it also inhibits DHFR; toxicity is skin rash and depression of hematopoesis
Term
Sulfonamides-TMP*
Definition
tx for malaria, cyclospora*, toxoplasma; toxicity is agranulocytosis, aplastic anemia
Term
Iodoquinol + Metronidazole
Definition
Tx amebiasis; Iodoquinal treats only LUMINAL trophozoites; Toxicity includes anorexia, metallic taste*
Term
Nitrazoxanide
Definition
Tx Cryptosporidium; prodrug for tizoxanide which inhibits pyruvate:ferredoxin oxidoreductase pathway; well tolerated
Term
Dientamoeba fragilis
Definition
Iodoquinol is DOC
Term
Toxoplasma gondii
Definition
Sulfa-TMP
Term
Metronidazole for parasites
Definition
Giardia and trichomonas
Term
Albendazole
Definition
Larval tapeworms, Cysticercosis, hydatid (pork/dog tapeworms) and adult tapeworms, and larva migrans; inhibits tubulin polymerization by binding to Beta tubulin; also inhibits glucose uptake
Term
Mebendazole
Definition
DOC* for Ascaris, hookworm, pinworms and whipworms, both larval and adult; binds to free B-tubulin* and inhibits glucose uptake
Term
Ivermectin*
Definition
Strongyloides stercoralis; inappropriate release of GABA*
Term
Praziquantel
Definition
Schistosomiasis*; Cell membrane permeability to Calcium resulting in paralysis*
Term
Permethrin
Definition
Topical for Scabies; inhibits insect neuronal activity
Term
Head and pubic lice
Definition
Pyrethrin plus piperonyl butoxide; pyrethrin is similar to DDT by inhibiting neuronal activity; piperonyl butoxide is a p450 inhibitor which increases pyrethrin levels
Term
Acyclovir
Definition
guanosine analog; requires 3 phosphorylations w/ thymidine kinase performing the initial one*; acts as both chain terminator and DNApol inhibitor*; Tx VZV and genital herpes
Term
Valacyclovir
Definition
prodrug of acyclovir; greater bioavailability
Term
Famciclovir
Definition
converted to penciclovir; same mechanism as acyclovir; acute zoster, genital herpes and mucocutaneous HSV
Term
Ganciclovir
Definition
same as acyclovir; effective against Life-threating CMV (retinitis, pneumonitis)*; Toxicity: hematologic myelosuppression* additive w/ AZT
Term
Cidofovir
Definition
Deoxycytodine analog activated by cellular enzymes and inhibits DNApol; long intracellular half-life; treats CMV retinitis by IV; Toxicity: renal(give probenacid)
Term
Foscarnet*
Definition
pyrophosphate analog, blocks its binding site in DNApol*; Tx acyclovir-resistant HSV,VZV* and CMV retinitis*; Toxicity: renal, metabolic, CNS, anemia
Term
Idoxuridine, Trifluridine
Definition
Thymidine analogs used topically in eye for HSV keratitis
Term
Fomivirsen sodium*
Definition
Antisense oligonucleotide* complementary to CMV nucleic acid inhibiting replication; Injected into eye for CMV retinitis; Toxicity: uveitis, glaucoma
Term
Ribavirin
Definition
guanosine analog, inhibits DNA/RNA synthesis; administered by aerosol; Tx RSV pneumonitis and HCV; Toxicity: hemolytic anemia and precipitates in ventilators
Term
Amantadine, Rimantadine
Definition
cyclic amines that target influenza A m2 protein adn prevent uncoating*; tx type A; Toxicity: GI intolerance, CNS effects (amantadine)
Term
Zanamivir(IN), Oseltamivir(oral)
Definition
neuraminidase inhibitors*; Tx type A&B; can be used prophylactically
Term
2 classes of HIV tropic receptors
Definition
CD4 and Chemokine (CCR5-macrophage, CXCR4-Tcell
Term
IL-10
Definition
reduced expression speeds progression to AIDS
Term
CCR5*
Definition
homozygous delta 32 deletion delays HIV progression*, though promotor region mutation increases susceptibility
Term
SDF1
Definition
Promoter mutation delays the onset of AIDS
Term
CCL3L1
Definition
suppressive chemokine; those w/ lower gene copy number have increased susceptibility
Term
Zidovudine, AZT
Definition
NRTI: thymidine analog, requires 3 phophorylations to competitively inhibit RT and DNA chain formation*; Toxicity: Macrocytic anemia, neutropenia, leukopenia*; lactic acidosis and severe hepatomegaly w/ steatosis
Term
Didanosine
Definition
NRTI: deoxyadenosine analog; rapidly degraded if oral; Toxicity: pancreatitis, peripheral neuropathy
Term
Zalcitabine
Definition
NRTI: deoxycytidine analog; Toxicity: peripheral neuropathy, pancreatitis
Term
Stavudine
Definition
NRTI: thymidine analog; 2nd line therapy; Toxicity is peripheral neuropathy, pancreatitis
Term
Lamivudine, Emtricitibine
Definition
NRTI*: cytidine analog; 1st line with zidovudine; less toxicity but some pancreatitis
Term
Abacavir
Definition
NRTI*: guanosine analog, DNA chain terminator; hypersensitivity reaction is toxicity
Term
Tenofovir
Definition
NRTI: acyclic nucleoside phophonate (doesnt need to be phosphorylated); 1st line (some GI complaints)
Term
NNRTIs: nevirapine, delavirdine, efavirenz: MOA
Definition
direct binding and inhibition of RT at allosteric sites, inhibits DNA-dependent DNApol
Term
Delavirdine
Definition
NNRTI, rash that resolves
Term
Nevirapine
Definition
NNRTI, Liver toxicity but given to preggers
Term
Efavirenz
Definition
NNRTI, AVOID in preggers; significant CNS toxicity
Term
Protease inhibitors (-navir)
Definition
Inhibit HIV aspartic protease blocking processing of gag,pol*; Toxicity: GI problems, diabetes, lypodystrophy; p450 inhibitor
Term
ritonovir*
Definition
Strong inhibitor of p450 so used at low levels with other PIs to increase effects
Term
Tipranavir
Definition
only PI where cross resistance does NOT develop very rapidly
Term
Enfuvirtide (T20)
Definition
synthetic peptide that binds gp41 and inhibits fusion
Term
Raltegravir
Definition
Integrase inhibitor
Term
Maraviroc
Definition
CCR5 receptor antagonist
Term
pegylated IFN-alpha
Definition
blocks viral transcription and translation; injected SC; Tx HBV,HCV,HPV
Term
5 things that increase insulin secretion
Definition
sulfonylureas, B2 agonists, prostaglandins, ACh, Calcium
Term
5 things that DECREASE insulin secretion
Definition
somatostatin, a-agonists, diazoxide, thiazide diuretics, verapamil
Term
Sulfonylureas and Meglitinides
Definition
Oral agents for type II; increase sensitivity of B-cell to glucose; weight gain common; Low Toxicity: decreases Iodide uptake, GI reaction (only sulfonylureas); teratogenic
Term
Tolbutamide
Definition
sulfonylurea, increased CV related deaths
Term
Glipizide
Definition
sulfonylurea, once day dosing
Term
Glyburide
Definition
sulfonylurea, use with caution in elderly* due to risk of hypoglycemia
Term
Chlorpropamide
Definition
sulfonylurea, ADH-like effect and used with caution in elderly*
Term
Sulfonylureas and drug interactions
Definition
ASA (displaces), NSAIDS (displace and inhibit metabolism), Warfarin (displace and inhibit metabolism), Chloramphenicol (inhibits metabolism)
Term
Biguanides (Metformin)
Definition
decrease hepatic glucose output and increase insulin sensitivity of periphery*; no risk of hypoglycemia or weight gain; Toxicity: GI disturbances, lactic acidosis
Term
Thiazolidinediones (rosiglitazone, pioglitazone)
Definition
increase number of glucose transporters, reduces plasma glucose, insulin and triglycerides*; weight gain edema and MI (only Rosiglitazone)
Term
Exenatide
Definition
synthetic GLP-1 for injection; causes weight loss; tox: NVD; teratogenic
Term
Sitagliptin
Definition
inhibits DPP-4 protease that degrades GLP-1; Oral
Term
Repaglinide
Definition
Meglitinide; excreted in bile, weight gain
Term
Nateglinide
Definition
meglitinide; excreted in urine, weight gain
Term
INCREASE of OPL/OPG (osteoclastic activity)
Definition
IL-11, IL-6, IL-1, PGE1, PTH
Term
Decrease of osteoclast
Definition
TGF-B, estradiol, calcitonin
Term
Teriparatide
Definition
PTH analog; Tx osteoporosis or diaagnose pseduohypoparathyroidism; Injection but only for 2 years maximum, Tox: nausea, dizziness, leg cramps, altered mood, osteosarcomas
Term
Calcitonin*
Definition
derived from salmon; decreases calcium turnover in bone by increasing cAMP*; used leads to excretion of Ca*,PO4,Mg,CL,K; tx Paget's disease*, hyper-PTH, osteoporosis
Term
Cholecalciferol
Definition
vit D3, endogenous
Term
Ergocalciferol
Definition
Vit D2, from plants
Term
Calcifediol
Definition
25OH-D3, circulating form
Term
Calcitriol
Definition
1,25OH-D3, active form; used for emergency situations
Term
5 inducers of 1-hydroxylase in kidney
Definition
low Ca, PTH, low Phos, Estradiol, Prolactin
Term
FGF23
Definition
inhibits 1-hydroxylase
Term
Paricalcitol
Definition
1,25OH-D2; IV Tx hyper-PTH in patients with renal failure on dialysis; works b/c it doesnt affect Ca/P levels
Term
Doxercalciferol
Definition
1,25OH-D2; given orally for hyper-PTH secondary to renal failure
Term
Vitamin D effects*
Definition
Increase Ca and PO4; induces calcium transport proteins in intestine (ECa2, Calbindin, PMCA1b atpase)*; increases renal reabsorption of both*; stimulates Ca mobilization in bone*; potentiates action of PTH on bone*; increases number of osteoclasts*; decreases lymphoid cells, induces osteocalcin/osteopontin
Term
Calcipotriene
Definition
Vit D derivative used to tx psoriasis
Term
Dihydrotachysterol
Definition
Vit D2 derivative that only needs to be modified by liver to tx hypocalcemia (good for renal patients)
Term
Visphosphonates
Definition
pyrophosphate analogs which bind directly to hydroxyapatite crystals in bone impairing resorption; VERY POOR oral absorption
Term
Etidronate
Definition
Non-nitrogenous bisphosphonate that is internalized by osteoclasts impairing functions and leading to apoptosis*; tx Pagets, neoplasms, trauma; Toxicity: GI bleeds, diarrhea, osteomalacia
Term
Alendronate*, Ibandronate
Definition
aminobisphophonates; block farnesyl diphosphate synthase which impairs post-translation modification of regulator proteins such as Ras,Rho,Rac*; also induces apoptosis; NO osteomalacia or reflux; TOXICITY: osteonecrosis of jaw
Term
Zolendronate
Definition
IV bisphos once/year; reduce hip,wrist,vertebrae fracture; Toxicity: nausea and severe bone pain, osteonecrosis of jaw
Term
Raloxifene
Definition
SERM (bone liver agonist) (uterus brain antagonist); strong bones, good LDL, hot flashes, procoagulant
Term
Fluoride
Definition
slow release stimulates bone formation highly but bone has less mechanical strength
Term
Strontium ranelate
Definition
stimulate bone formation in post-menopausal osteoporosis; can cause nausea, diarrhea, headache, dermatitis
Term
Ethinyl estradiol
Definition
Estrogen used primarily in contraceptives
Term
Estradiol and conjugated equine estrogens
Definition
used primarily in menopausal HRT
Term
Anastrazole* and exemestane
Definition
aromatase inhibitors used to treat breast cancer; toxicity: hot flashes, long term bone/chol effects
Term
Progesterone, Medroxyprogesterone acetate
Definition
menopausal HRT
Term
Northindrone, Norgesterol
Definition
19-nor steroids used in contraceptives with some androgenic side effects
Term
HRT for menopause
Definition
tx hot flashes (Estrogen), Maintenance of bone (E), vaginal dryness (E); Side effects: endometrial cancer*(E so give P), risk of breast cancer and stroke
Term
Combination OCP
Definition
Block ovulation at hypothalamus* (19norP), decrease dysmenorrhea, anemia, ovarian/uterine cancer*; Toxicity: stroke, VTE, breast cancer risk
Term
Progestin only OCP
Definition
either low dose 19-norP or medroxyprogesterone injection; can cause menstrual irregularities
Term
Emergency contraception
Definition
high dose Progesterone; N/V and possibly teratogenic if already preggers
Term
Tamoxifen
Definition
blocks ER in breast cancer tumor cells; Toxicity: endometrial cancer*, VTE*, hot flashes; good for lipids
Term
Clomiphene
Definition
Inhibits estrogen inhibition at pituitary to enhance FSH*; increases ovulation
Term
Mifepristone
Definition
Anti-progestin at receptors (causes detachment) used wtih a PG for medical abortion
Term
Methyl-testosterone
Definition
17-alkyl substituted compound; causes Hepatic toxicity*
Term
Flutaminide
Definition
Anti-andrgoen receptor antagonist to treat prostate cancer
Term
Leuprolide
Definition
GnRH analog, continuous administration to shut down the pituitary
Term
Sodium bicarbonate
Definition
Systemic, short duration, can cause hypertension
Term
calcium carbonate
Definition
partially stystemic, prolonged activity, can lead to acid rebound (via gastrin) and kidney stones
Term
Magnesium hydroxide
Definition
local, rapid onset, cause diarrhea
Term
Aluminum hydroxide
Definition
local, rapid onset, cause constipation, deplets phosphate* leads to bone destruction
Term
Anti-muscarinics (propantheline, isopropamide, pirenzepine)
Definition
block ACh mediated motility and secretions but cause systemic anti-Ach effects (Pirenzipine is more selective of M1 so less effects)
Term
H2 antagonists
Definition
decrease acid secretion by all stimuli though high relapse rates
Term
Cimetidine
Definition
H2 antagonist; bad in elderly, renal pts, prolonged thereapy can cause mental confusion, increased creatinine, hematologic changes; anti-androgen effects in high doses; inhibits p450*
Term
Ranitidine
Definition
H2 antagonist with less p450 effects and does NOT bind androgen receptor
Term
famotidine
Definition
H2 antagonist with no p450 effects and no other side effects
Term
nizatidine
Definition
H2 antagonist with rare hepatic toxicity but no p450 or androgen effects
Term
Misoprostol
Definition
PGE1 derivative, opposes cAMP in ECL cells (decreases acid secretion), increases bicarb, mucus, blood flow; tx high risk patients on NSAIDs; Toxicity: bloating and diarrhea, preggers
Term
Proton pump inhibitors (omeprazole, lansoprazole, rabeprazole, esomeprazole)
Definition
Weak bases that get trapped and activated in secretory canaliculi irreversibly inhibiting H/K atpase*; Toxicity: inc infxns, osteoporosis, CI with clopidogrel, hypergastrinemia
Term
Sulcrafate
Definition
sucrose+AlOH, in acid polymerizes to create a barrier, H. pylori suppressive; stimulates PGE, inhibits pepsin
Term
Rebamipide
Definition
stimulates mucus and scavenges free radicals; tx ulcers
Term
carbenoxylone
Definition
stiulates mucus secretion
Term
Bismuth compounds
Definition
promot mucus secretion, adherence, adn antibacterial
Term
Neostigmine
Definition
inhibits AChE increasing ACh; increases GI motility and stomach emptying; Toxicity: SLUDS* rarely used
Term
Metoclopramide
Definition
D2 antagonist which increases ACh; increases LES tone, esophageal clearance, gastric emptying, bowel motility; Toxicity: somnolence, nervousness, dystonia, increased prolactin
Term
Cisapride
Definition
5HT4 agonist* increasing ACh activity; promotes gastric emptying, increases LES tone and esophageal clearance; Toxicity: increased bowel movements and FATAL cardiac effects
Term
Erythromycin and role in GI motility
Definition
binds motilin receptors; tx diabetic gastroparesis; Toxicity: abdominal cramps
Term
Chenodeoxycholic acid
Definition
natural bile acid; inhibits HMG-CoA reductase; tx for up to years for gallstone dissolution; Toxicyt: diarrhea, liver dysfunction, LDL increase
Term
Ursodiol
Definition
hydrophylic bile acid taht does not inhibit 7a-hydroxylase (dec diarrhea,LDL, liver problems); still requires up to 2 years and CI in chronic liver disease
Term
Methyl tert-butyl ether
Definition
Infused directly into gallbladder; is a solvent for lipids
Term
Monoctanoin
Definition
semi synthetic veggie oil that is infused into common bile duct for 7-21 days
Term
Psyllium, methyl-cellulose, bran
Definition
Bulk forming laxatives (increase water) and least SEs
Term
Lactulose
Definition
Osmotic laxatives
Term
Magnesium salts and sodium phosphates
Definition
stimulate bowel contractions; Toxicity: Mg (accumulates w/ renal failure), Phosphates (htn)
Term
Bisacodyl, sennasoids, castor oil
Definition
secretory laxatives (induce mild irritant injury to mucosa); Castor oil can reduce absorption of lipid soluble vitamins
Term
Tegaserod
Definition
5HT4 partial agonist*; works presynaptically in bowel to promote transit; Toxicity: CARDIAC problems
Term
Lubiprostone
Definition
Activates local Cl- channels; tx idiopathic chronic constipation
Term
Morphine, codeine, opium tincture
Definition
natural opiates, SE include constipation and CNS effects
Term
Diphenoxylate
Definition
synthetic opiate; Little abuse but does cross BBB so give with atropine
Term
Loperamide
Definition
synthetic opiate; does NOT cross BBB, NO abuse
Term
Atropine, scopolamine
Definition
muscarinic antagonists; reduce secretion and colonic peristalsis*, primarily relieve cramping
Term
Kaolin, pectin, attapulgite
Definition
Hydrated aluminum silicate clays, act as absorbants/protectants; not used
Term
Bismuth subsalicylate
Definition
binds abcterial toxins, prevents PG production, some antibacterial activity; Tx travelers diarrhea; Toxicity: avoid ASA use, turns tongue/stool black
Term
Corticosteroids
Definition
Increase Na/K atpase in intestinal lumen thus increasing absorption; delayed effect; tx chronic diarrhea
Term
Clonidine
Definition
Decrease secretions, can cause hypotension
Term
Octreotide
Definition
somatostatin analog*; inhibits GI hormones, decreases blood flow, reduces motility, increases absorption; *Tx carcinoid and VIPomas and AIDS patients; give parenterally
Term
ORT
Definition
increases absorption along dextrose-sodium cotransport system; tx acute childhood diarrhea
Term
Rifaximin
Definition
non-absorbable antibiotic used to tx travelers diarrhea and some IBS
Term
Sulfasalazine
Definition
broken down to sulfapyridine and 5-ASA; used for mild to moderate ulcerative colitis
Term
Mesalamine (5-ASA)
Definition
active agent; remains in colon inhibiting AA metabolism esp preventing leukotriene B4 production and can scavenge free radicals; give as enema for active ulcerative colitis
Term
Sulfapyridine
Definition
completely absorbed; commonly causes NV, headache, abdominal discomfort, malaise, arthralgia, anorexia
Term
Olsalazine
Definition
covalent dimer of 5-ASA* which is activated by bacteria in colon, taken orally
Term
hydrocortisone
Definition
can be given via enema for severe ulcerative colitis
Term
Azothioprine, 6-mercaptopurine
Definition
purine anti-metabolites that inhibit lymphocyte production; tx ibd
Term
Methotrexate
Definition
inhibits purine and thymidine synthesis, promotes Tcell apoptosis; tx Crohn's in remission
Term
Cyclosporine
Definition
tx flare-ups in ulcerative colitis unresponsive to steroids
Term
Infliximab, adalimumab
Definition
TNFa chimeric monoclonal antibody; can cause serum sickness, lymphoma, CNS demyelination
Term
Natalizumab
Definition
Integrin a4 receptor antibody; tx IBD; can cause PML and infections
Term
Ipecac syrup
Definition
emetic used for acute poisoning; contains emetine which directly stimulates peripheral sensory afferents in stomach to induce reflex vomiting*, can also hit up CTZ; Toxicity: heart in large doses
Term
Scopolamine
Definition
muscarinic antagonist, reduces transmission of vestibular system and depresses labyrinth receptors; synergistic with ephedrine; Tx motion sickness!; Toxicity SLUDS
Term
Dimenhydrinate, Diphenhydramine
Definition
H1 antagonists w/ antimuscarinc activity; block labyrinth neural pathways; tx motion sickness, postop nausea and vomiting; sluds
Term
Metoclopramide, Chlorpromazine
Definition
D2 receptor antagonists in CTZ and VC; inhibit vagal nerve stimulation; prokinetic drug; Tx mild cancer regimens, irradiation, post-op nausea; Toxicity: sedation, diarrhea, EPS, orthostatic hypotension, seizures, if chronic admin
Term
Dronabinol
Definition
cannabinoid used for cancer chemotherapy, predictable side effects
Term
Dexamethasone
Definition
High dose IV bolus for chemo, oral for delayed nausea; often prescribed w/ ondansetron to block delayed emesis
Term
Lorazepam
Definition
BZ, prevents anticipatory emesis and vertigo (NOT motion sickness)
Term
Ondansetron
Definition
5-HT3 antagonist*; DOC for acute nausea caused by chemo esp higher emotgenic potential, used postoperatively and during preggers
Term
Aprepitant
Definition
High affinity antagonist of NK1 receptors in brain; blocks both acute and delayed chemo vomiting, very powerful; Toxicity: inhibits p450
Term
anti-emetogenic triple therapy
Definition
Ondansetron, aprepitant, dexamethasone
Term
amphetamines
Definition
Not recommended*
Term
Diethylpropion
Definition
similar to amphetamine, decrease appetite with less CNS effects
Term
Phentermine
Definition
similar to amphetamine, lower cns effects with increased insomnia
Term
Mazindol
Definition
similar to amphetamine (also inc 5HT); short lived effect; NO dependence and safer but still dont give to patients with bad hearts
Term
Rimonabant
Definition
appetite suppresant; CB1 receptor blocker; may cause severe depression
Term
Fenfluramine
Definition
increases serotonin; promotes satiety; TOO TOXIC TO USE
Term
Sibutramine
Definition
promotes satiety; inhibits NE/5HT reuptake; approved for long-term use; After cessation body weight rapidly regained
Term
Orlistat
Definition
inhibits pancreatic/intestinal lipases; not absorbed, use long term; causes flatulence, steatorrhea, fecal leakage
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