Veterinary Pharmacology

Lecture Topics

Behavioral Objectives

Key Words

 

Topic 1: Introduction to Pharmacology
Topics 2-3: Molecular Mechanisms of Drug Action
Topics 4-5: Drug Biotransformation
Topics 6-10: Basic Pharmacokinetics
Topics 11-15: Autonomic Nervous System
Topic 16: Pharmacology of the Central Nervous System
Topics 17-20: Autacoids and Antiflammatory Agents
Topics 21-22: Introduction to Antiinfectives and Synthetic Antimicrobial Agents
Topics 23-28: Antibiotics and Antifungals
Topics 29-30: Antiviral Agents and Antineoplastics
Topics 31-32: Agents Acting on the Gastrointestinal Tract
Topics 33-37: Cardiovascular Drugs
Topic 38: Topical Agents
Topics 39-40: Drug Interactions

 

 

 

TOPIC 1

INTRODUCTION TO PHARMACOLOGY (L/Ehrich/1) 

  1. Define terms relating to pharmacology. Compare and contrast pharmacodynamics and pharmacokinetics.
  2. Identify characteristics of drugs and characteristics of patients and describe how these characteristics affect how drugs act in the body.
  3. Consider pharmaceutical preparations and describe how they may affect the action of drugs used in veterinary medicine. Name some different types of preparations for drug delivery.
  4. Describe differences in the various names a drug may have.
  5. Explain drug laws of importance in veterinary medicine.

 

KEY WORDS:

pharmacology U.S. Pharmacopeia - National Formulary (USP - NF)
drug scheduled drug, controlled drug
disease prescription
prevention legend drug
treatment Federal Food Drug and Cosmetic Act
cure Durham Humphrey Amendment
diagnosis Kefauver-Harris Amendment
indication Animal Medicinal Drug Use Clarification Act
contraindication Veterinary Feed Directive
pharmacokinetics Comprehensive Drug Abuse Prevention and Control Act
pharmacodynamics Food and Drug Administration
therapeutics Center for Veterinary Medicine
clinical pharmacology health regulatory boards of Virginia
toxicology solution
pharmacy suspension
adverse effect emulsion
side effect syrup
toxic effect elixir
drug interactions capsule
addition tablet
synergism/potentiation approved drug
antagonism unapproved drug
official name safe and effective
chemical name no human hazard
generic name over-the-counter, non-prescription
brand or trade name  

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TOPICS 2,3

MOLECULAR MECHANISMS OF DRUG ACTION (L/Ehrich/2)

  1. Receptors are important in drug action at the molecular level. Explain the role of agonists and antagonists at receptor sites.
  2. Describe the bonds between a drug and receptor
  3. Express dose-response relationships using log dose plots.
  4. Represent graphically the responses that may occur when drugs and receptors interact. Note threshold, intrinsic activity, efficacy, potency, surmountable antagonism and insurmountable antagonism.
  5. Describe and depict graphically how drug safety measurements can be determined using quantal responses. Note margin of safety and therapeutic index.
  6. Describe the factors regulating the diffusion of drug molecules across biological membranes and correlate them to drug pharmacology. Include the drug's molecular size, lipophilicity, and pH/pKa relationship in the discussion

 

 

KEY WORDS: 

pharmacodynamics threshold
receptor graded response
ligand quantal response
logarithmic normal distribution curve
van der Walls forces therapeutic index (risk-benefit ratio)
ionic bonds margin of safety
hydrogen bonds certain safety factor
covalent bonds lipid solubility, lipophilicity
agonist ion-trapping
antagonist pKa
partial agonist pharmacokinetics
competitive or surmountable antagonism passive diffusion
noncompetitive or insurmountable antagonism concentration gradient
desensitization of receptors (tolerance) partition coefficient
affinity molecular exclusion
efficacy pH/pKa relationship
intrinsic activity Henderson-Hasselbach equation
potency weak acid
dose response weak base
maximal effect oil/water partition coefficient
absorption
distribution
clearance

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TOPICS 4 - 5

DRUG BIOTRANSFORMATION (L/Ehrich/1; AT/Ehrich/1)

  1. Delineate the purposes of nonsynthetic reactions of drug biotransformation and give examples of each (Phase I pathways).
  2. Delineate the purpose of synthetic (conjugation) reactions of drug biotransformation and give examples of each (Phase II pathways).
  3. List some nonmicrosomal reactions resulting in drug biotransformation.
  4. Indentify the major organs and describe the parts of the cell involved in drug biotransformation.
  5. Identify some factors which can affect drug biotransformation, explain reasons for their effects, and relate these actions to the actions of drugs in the body.
  6. Discuss species differences in drug metabolism and what this means in terms of drug safety and efficacy.
  7. Explain the role of enzyme induction and inhibition on drug actions and interactions, including mechanisms and factors affecting induction and inhibition of drug biotransformation.

 

KEY WORDS:

biotransformation

mitochondria
Phase I soluble enzymes
  water solubility
nonsynthetic polar molecules
oxidation acetylation
hydroxylation glutathione
reduction mercapturic acid
hydrolysis methylation
esters, amides S-adenosyl methionine
Phase II liver
synthetic microflora
conjugation mixed function oxidases
glucuronic acid cytochrome P450
uridine diphosphoglucuronic acid (UDPA) cytochrome P450 isozymes
ß-glucuronidase species differences
sulfates nutritional status
transferases interactions
smooth endoplasmic reticulum enzyme induction
microsomes enzyme inhibition

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TOPICS 6 -10

BASIC PHARMACOKINETICS (L/Wilcke/5)

A.

Describe effects that pharmaceutical, physiological and pathological factors can have on drug absorption and relate these effects to drug efficacy and toxicity.
B. Differentiate between routes of administration in terms of:
a) Specific physiologic and pathologic processes that may affect drug absorption;
b) Advantages and disadvantages of each in economic, compliance and therapeutic terms;
c) Clinical situations where each might be appropriate or inappropriate.
C. Describe pharmaceutical, physiological and pathological factors that influence the rate and extent of drug distribution among the various tissues of the body.
D. Describe the pharmaceutical, physiologic and pathologic factors that influence elimination of drugs from the body via renal, hepatic and respiratory mechanisms.
E. Describe drug disposition (absorption, distribution, and elimination) in terms of simple mechanical and mathematical models.
F. Each of the following pharmacokinetic concepts plays a role in determining drug concentrations at various times following drug administration to patients. Describe the role and discuss any inter-relationships between them.
a) Bioavailability
b) Volume of distribution
c) Total clearance
d) Half-life of elimination; rate constant of elimination

 

Dr. Wilcke's Class Notes: http://cpharm.vetmed.vt.edu click on VM8314

 

KEY WORDS: 

passive diffusion one compartment model
partition coefficient two compartment model
pKa zero-order kinetics
weak acid first-order kinetics
weak base protein binding
ion trapping drug depot
injection volume placental barrier
absorption clearance
bioavailability biological half-life
translocation elimination rate constant
metabolism kidney
excretion glomerular filtration
elimination tubular reabsorption
enteral active tubular secretion
surface area passive tubular reabsorption
parenteral organic anions
topical rate of elimination
inhalation biliary excretion
tissue infusion enterohepatic circulation
intravenous fecal excretion
water soluble elimination rate constant
vascular space fraction of drug absorbed (F)
extracellular fluid saliva
intracellular fluid tears
clearance milk
diffusion limited distribution hair
subcutaneous skin
intraperitoneal lungs
first-pass effect effective drug concentration
intramuscular body storage
intrathecal cumulative toxicity
intradermal priming doses
topical solubility
bioavailability dose dependent kinetics
bioequivalence dose independent kinetics
drug disposition steady state
drug distribution
apparent volume of distribution
fluid compartment

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TOPICS 11-15

AUTONOMIC NERVOUS SYSTEM (L/Ehrich/5)

  1. Describe the divisions of the autonomic nervous system, its transmitters, and the receptors at which drugs act. Relate these to effects on innervated organs.
  2. Derive the structure-activity relationship among sympathomimetics and relate these to their pharmacologic actions.
  3. Identify uses and side effects of direct and indirect sympathomimetics and describe the reasons for their action.
  4. Identify the types of direct and indirect sympatholytic agents used in therapeutics and compare their pharmacodynamics.
  5. Compare direct and indirect parasympathomimetic agents, and contrast their pharmacodynamics. Give examples of each.
  6. Describe uses for anticholinergic drugs that act at muscarinic and nicotinic sites and explain their mechanisms of action.

 

KEY WORDS:

autonomic nervous system ephedrine (Sudafed®) pilocarpine
sympathetic nervous system phenylephrine (Neo Synephrine®) glaucoma
agonist amphetamine parasympathomimetic
antagonist xylazine (Rompun®) cholinergic agent
norepinephrine tricyclic antidepressants physostigmine (eserine)
a1 receptors monoamine oxidase (MAO) inhibitors neostigmine
a2 receptors reuptake inhibitors organophosphate
b1 receptors methylxanthines neurotoxicity
b2 receptors theophylline, aminophylline cholinesterase reactivator
parasympathetic nervous system phosphodiesterase inhibitors pralidoxime (2-PAM)
acetylcholine sympatholytic parasympatholytic
nicotinic acepromazine Belladonna
muscarinic calcium channel blockers atropine
sympathomimetic a1 antagonist scopolamine
adrenergic a2 antagonist competitive antagonism
phenylethylamine b blocker anticholinergic
monoamine oxidase dibenamine (Dibenzyline®) tachyphylaxis
substituent propranolol (Inderal®) drug abuse
vasoconstriction acetylcholine neuromuscular junction
decongestant acetylcholinesterase nicotinic agonist
hypotension cholinesterase inhibitor nicotinic antagonist
mydriatic reversible inhibitor ganglionic blocking agents
narcolepsy irreversible inhibitor nondepolarizing blocker
epinephrine (Adrenalin) anionic site depolarizing blocker
isoproterenol (Isuprel®) esteratic site tubocurarine
dopamine (Intropin®) carbachol succinylcholine
dobutamine bethanechol (Urecholine®) neuromuscular blocker
  metoclopramide (Reglan®)  

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TOPIC 16

PHARMACOLOGY OF THE CENTRAL NERVOUS SYSTEM (L/Ehrich/1)

  1. Identify CNS receptors and neurotransmitters that can be altered by drugs used as therapeutic agents.
  2. Describe uses for drugs that alter neurotransmitters such as acetylcholine, monamines, GABA or glutamate, or interact with their receptors in the CNS. Relate the uses and side effects of these drugs to their molecular action. Also consider opioid receptors.

KEY WORDS:

acetylcholine benzodiazepine
dopamine diazepam (Valium®)
norepinephrine phenothiazines
serotonin (5-HT) acepromazine
chloride channels metoclopramide (Reglan®)
GABA opioid
glutamate ketamine
glycine agonist
neuropeptides partial agonist
enkephalins, endorphins antagonist
opioid receptors MAO
mu and kappa receptors tricyclic antidepressant
tranquilizer serotonin reuptake inhibitor
neuroleptic alpha-2 receptor
analeptic xylazine
analgesic convulsant; anticonvulsant
antiemetic general anesthetic
emetic  
antitussive  
barbiturate  
pentobarbital
thiopental
phenobarbital

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TOPICS 17-20

AUTACOIDS AND ANTIINFLAMMATORY AGENTS (L/Ehrich/4)

  1. Explain the principles guiding the use of peptide and steroid hormones in therapy.
  2. Delineate how thyroid and antithyroid agents exert their pharmacological action.
  3. Relate insulin pharmaceutics and insulin pharmacokinetics.
  4. Relate structure to adrenal hormone pharmacodynamics. Explain why both pharmacodynamics and pharmaceutics are important in therapeutics with these agents.
  5. Describe pharmacodynamics and pharmacokinetics of reproductive hormones and relate this to their use as therapeutic agents.
  6. Compare and contrast the physiological role of prostaglandins and their uses and side effects as therapeutic agents.
  7. Relate the mechanisms of action of nonsteroidal antiinflammatory agent to their usefulness and side effects.
  8. Relate mechanism of action to usefulness of methylxanthines, DMSO, cytotoxic agents, and mucopolysaccharides for treatment of the manifestation of inflammation.
  9. Compare and contrast the actions, uses and side effects of antihistamines that act at H-1 and H-2 receptors

 

KEY WORDS: 

replacement androgens
additive testosterone propionate
antagonistic methyltestosterone
palliative anabolic steroids
anterior pituitary stanozolol (Winstrol®)
growth hormone mibolerone (Cheque®)
Somatropin estrogens
anabolic agent feminization
thyroid stimulating hormone diethylstilbestrol (DES)
thyrotropin (Thytropar®) estrus synchronization
corticotropin (Acthar®, ACTH progestins
gonadotropin megestrol acetate (Ovaban®)
FSH antiinflammatory
LH glucocorticoid
ICSH Cushing's Disease
antidiuretic hormone (ADH, vasopressin) Addison's Disease
diabetes insipidis hydrocortisone
oxytocin prednisone, prednisolone
gonadotropin mineralocorticoid
Insulin capillary permeability
U-100 insulin; U-40 insulin o,p'-DDD (Lysodren, Mitotane®)
short duration insulin L-thyroxin
zinc insulins L-triiodothyronine
hypoglycemic Graves Disease
diabetes mellitus propylthiouracil
insulin dependent diabetes potassium iodide (KI)
insulin independent diabetes I 131, radioactive iodine
oral hypoglycemics arachidonic acid
glucagon abortifacient
parathyroid hormone estrus synchronization
calcitonin luteolytic
prostaglandin F2 (dinoprost tromethamine, Lutalyse, Prostin F2 alpha) cyclooxygenase
prostaglandins inflammation
histamine antiinflammatory
H1 receptors analgesic
H2 receptors salicylism
bradykinin phenylbutazone (Butazolidin®)
acute allergic reaction flunixin (Banamine®)
delayed allergic reaction immunosuppressive
inflammation ulcers
cromolyn dimethyl sulfoxide (DMSO)
cimetadine (Tagamet®) gold sodium thiosulfate (Myochrysine®)
competitive antagonism glucocorticoids
phenothiazines hydrocortisone
diphenhydramine (Benadryl®) sympathomimetics
dimenhydramine (Dramamine®) epinephrine
pyrilamine methylxanthines
chlorpheniramine (ChlorTrimeton®, Teldrin®) aminophylline, theophylline
acepromazine phosphodiesterase inhibitors
teratogenic cytotoxic agents
cyclooxygenase mucopolysaccharides
salicylates sodium hyaluronate
aspirin glucosamine
ASA hepatotoxic
antipyretic superficial pain
  visceral pain
  acetaminophen (Tylenol®)
  codeine

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TOPIC 21-22

INTRODUCTION TO ANTIINFECTIVES AND SYNTHETIC ANTIMICROBIAL AGENTS (L/Ehrich/2)

  1. Describe factors to consider for appropriate treatment of infections and explain why they are important.
  2. Describe mechanisms of action by which antiinfective agents are useful in treatment of disease.
  3. Identify mechanisms causing resistance to antimicrobial agents.
  4. Describe and explain mechanisms for uses and side effects of sulfonamides.
  5. Describe the mechanism of action of trimethoprim-sulfonamide combinations and explain why this therapy is useful.
  6. Relate mechanism of action to use of fluroquinolones.
  7. Discuss mechanism of action of metronidazole and relate this to its usefulness.

 

KEY WORDS: 

antiinfective minimal inhibitory concentration (MIC)
antimicrobial agent minimal bacteriocidal concentration (MBC)
antibacterial protein binding
antibiotic drug interactions
antifungal synergism
antiviral antagonism
anthelmintic superinfection
antiparasitic agent allergy
antiseptic resistance
disinfectant prophylactic
infection cell wall
infecting agent cell membrane
inoculum effect protein synthesis
pathogenicity ribosome
transmissibility nucleic acid
invasiveness antimetabolite
host defense spectrum
symptoms bacteriocidal
chemotherapeutic agent bacteriostatic
diagnosis pharmacokinetics
initial blood level clinical pharmacology
maintenance blood level client considerations
sulfonamide antiinfective misuse
para-aminobenzoic acid (PABA) sulfamethoxazole
sulfanilamide sulfamethazole
competitive antagonist sulfadiazine
folic acid sulfasalazine (Azulfidine®)
dihydrofolic acid triple sulfas
tetrahydrofolic acid trimethoprim
acetylation ormetoprim
glucuronidation nitrofuran
ion trapping isoniazid
passive diffusion metronidazole
pH/pKa relationship fluoroquinolones
crystalluria enrofloxacin
blood dyscrasia weak acids
sensitization povidone iodide

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TOPICS 23-28

ANTIBIOTICS AND ANTIFUNGALS (L/Ehrich/6)

  1. Describe structural modifications of the basic penicillin molecule and explain how they may change absorption, resistance, or spectrum.
  2. Describe the pharmacokinetics of penicillin and relate this to its usefulness in therapeutics.
  3. Derive the basic structure of the cephalosporins and give the mechanism of action for this type of antibiotic. Compare pharmacokinetics and pharmacodynamics with penicillins.
  4. Explain what is unique with aminoglycoside antibiotics with regard to structure, spectrum, and side effects and relate this to use in therapeutics.
  5. Describe the mechanism of action of tetracyclines and chloramphenicol. Relate this to uses and problems associated with use.
  6. Describe the mechanisms of action, uses, and side effects of lincosamides and macrolides.
  7. Compare pharmacokinetics, pharmacodynamics and adverse effects of b -lactam, polypeptide, aminoglycoside, phenicol, tetracycline, macrolide and lincosamide antibiotics and relate these to choices made for therapeutic uses.
  8. List some antifungal agents and describe how they are used. Compare pharmacokinetics and pharmacodynamics of amphotericin B and the imidazoles.

 

KEY WORDS: 

antibiotic ß-lactamase bacitracin
antimicrobial agent penicillinase detergent
penicillin constitutive chloramphenicol
Penicillium cephalosporin florfenicol
spectrum cefadroxil (Cefatabs®) conjugation
repository cephazolin resistance
prototype compound cephalexin lincomycin
penicillin G ceftiofur (Naxcel®) anaerobe
benzyl penicillin tetracycline clindamycin
hypersensitivity ribosome macrolide
benzathine penicillin G bacteriostatic erythromycin
thiazolidine ring chelation tylosin
b-lactam ring superinfection novobiocin
bacteriocidal oxytetracycline (Terramycin®) avermectin
cross-linking chlortetracycline (Aureomycin®) invermectin
cell wall doxycycline ionophore
peptidoglycan aminoglycoside undecylenic acid
N-acetyl glucosamine neurotoxic salicylic acid
procaine penicillin G nephrotoxic polyene
transpeptidase diarrhea nystatin
phenoxymethyl penicillin gentamicin griseofulvin
(Penicillin V) amikacin amphotericin B (Fungizone®)
oxacillin streptomycin ketoconazole
cloxacillin 8th cranial nerve itraconazole
dicloxacillin neuromuscular blockade benzimidazole anthelmintics
ampicillin neomycin doxycycline (Vibramycin®)
amoxicillin parenteral protein binding
ticarcillin
polymyxin
clavulanic acid

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TOPICS 29-30

ANTIVIRAL AGENTS AND ANTINEOPLASTICS (L/Ehrich/2)

  1. Explain how and why viral chemotherapy is different from bacterial chemotherapy.
  2. Describe how nucleoside analogs act as antiviral agents.
  3. List other mechanisms for antiviral action.
  4. Describe principal problems associated with cancer chemotherapy.
  5. Describe the major mechanisms of actions of cancer chemotherapeutic agents.
  6. Differentiate between antineoplastic agents that affect existing DNA and agents that act on the cell cycle.
  7. Describe the rationale for using hormones and antihormones in cancer chemotherapy.

 

KEY WORDS: 

RNA virus free radical
DNA virus nitrogen mustard
replication vessicant
host resistance nephrotoxic
nucleoside analogs cyclophosphamide (Cytoxan®)
idoxuridine (5-IUDR, Stoxil®, iododeoxyuridine) chlorambucil (Leukeran®)
triluidene (Viroptic ®) cisplatin
herpes simplex antimetabolite
adenosine arabinoside pyrimidines (e.g., uracil)
Ara A, vidarabine, Vira-A folic acid
zidovudine (AZT) 5-fluorouracil
encephalitis mitotic inhibitor
amantadine (Symmetrel®) intercalate
influenza doxorubicin (Adriamycin®)
acyclovir bleomycin
interferon L-asparaginase
immunotherapy glucocorticoids
spectrum sex hormones
entry inhibition vinca alkaloid
cancer vincristine
cell cycle specific vinblastine
phases of cell cycle (G,S,M) estradiol
cell cycle nonspecific prednisone
cytotoxic iodine-131
combination chemotherapy mitotane (DDD, Lysodren)
body surface area DNA
immunosuppressive
drug resistance
alopecia
anorexia
alkylating agent

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TOPICS 31-32

AGENTS ACTING ON THE GASTROINTESTINAL TRACT (L, AT/Ehrich/2)

  1. Describe mechanisms associated with induction and control of emesis.
  2. Discuss mechanisms of agents used for treatment of peptic ulcer disease.
  3. Compare mechanisms of drugs used to increase and decrease gastrointestinal motility.
  4. Differentiate among irritant cathartics, volume increasing cathartics, and lubricant/surfactants.
  5. Describe methods used to control manifestations of diarrhea, comparing mechanisms and side effects of drugs used to obtain this therapeutic objective.
  6. Describe methods used to control severe visceral pain.

KEY WORDS: 

rumen prostaglandins
pH/pKa relationship anticholinergics
antacid parasympathomimetics
sodium bicarbonate metoclopramide
calcium carbonate prokinetic agent
aluminum hydroxide cisapride
magnesium hydroxide proton pump inhibitor
protectant atropine
astringent glycopyrrolate
antidiarrheal scopolamine
bismuth subsalicylate laxative
kaolin cathartic
activated charcoal cholinergic
emetic irritant
apomorphine bisacodyl (Dulcolax®)
chemoreceptor trigger zone (CTZ) dirlotapide (Slentrol®)
ipecac, emodin polyethylene glycol with electrolytes (GoLYTELY®)
antiemetic saline cathartics
phenothiazines magnesium sulfate (Epson salts)
acepromazine sodium sulfate (Glauber's salts)
antihistamines bulk
trimethobenzamide (Tigan®) methylcellulose
opioids psyllium (Metamucil®)
paregoric lubricant
diphenoxylate (Lomotil®) mineral oil
omeprazole surfactant
cimetidine (Tagamet®) docusates (dioctyl sulfosuccinate)
hydrogen peroxide butorphanol
sucralfate flunixin (Banamine®)
misoprostol aspirin
xylazine (Rompun®)

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TOPIC 33-37

CARDIOVASCULAR DRUGS (L/Ehrich/5)

  1. Discuss the differences between heparin and warfarin as anticoagulants, including chemistry, pharmacodynamics, pharmacokinetics, and antidotes.
  2. Discuss therapeutic uses of iron.
  3. Compare and contrast the pharmacokinetics and pharmacodynamics of diuretics that work at Site 1, Site 2, Site 3 and Site 4 in the kidney tubule and relate this to therapeutic uses.
  4. Discuss mechanisms of diuretic action associated with osmotic diuretics.
  5. Compare and contrast organic nitrates with other vasodilators.
  6. Compare and contrast advantages and disadvantages of angiotensin-converting enzyme inhibitors and cardiotonics with regard to their pharmacokinetics, pharmacodynamics, side effects, and uses in cardiac disease.
  7. Discuss the mechanism of action of cardiac glycosides and relate this to their uses and side effects. Include pharmacokinetics in the discussion.
  8. Classify the antiarrhythmia agents, describing the physiology responsible for the classification. Include ion transport and neurogenic mechanisms in the discussion.
  9. Compare and contrast the pharmacokinetics and therapeutic usefulness of the Class I antiarrhythmia agents quinidine, procainamide, and lidocaine.

KEY WORDS:

dehydration potassium-sparing ischemic heart disease
ion balance aldosterone organic nitrate
sodium spironolactone (Aldactone®) nitroglycerin
potassium thiazide sodium nitroprusside
chloride hydrochlorothiazide
phosphodiesterase inhibitors
hyalazine
bicarbonate methylxanthine isoxsuprine
pH balance aminophylline, theophylline b adrenergic blockers
isotonic saline saluretic a adrenergic blockers
Ringer's solution furosemide (Lasix®) propranolol
Lactated Ringer's solution antidiuretic hormone hypovolemic shock
acidifying solutions proximal convoluted tubule vasculogenic shock
alkalinizing solutions loop of Henle cardiogenic shock
diuretic distal convoluted tubule vasopressors
edema hypokalemia angiotensin converting enzyme inhibitors
congestive heart failure high ceiling diuretic enalapril
electrolyte disturbances loop diuretic xylazine
osmotic diuretic anuria calcium channel blockers
mannitol vasodilator epinephrine
carbonic anhydrase antihypertensive vasoconstrictor
glaucoma congestive heart failure calcium transport
acetazolamide myocardial infarction verapamil (Isoptin®)
dichlorphenamide (Daranide®) dysrhythmia diltiazem
Site 1 tachycardia therapeutic index
Site 2 atria Class Ia
Site 3    
Site 4 ventricle Class Ib
cardiac glycoside automaticity Class II
digitalis depolarization Class III
Digitalis purpurea conductivity Class IV
Na+K+ATPase sodium transport Class V
inotropic infarction Phase O
ECG quinidine sulfate dV/dt
arrhythmia cinchona QT interval
bradycardia atrial fibrillation supraventricular arrhythmias
vagotonic SA node ventricular fibrillation
emesis procainamide HCL sympathomimetics
digitalization beta blockers parasympatholytics
potassium depletion propranolol (Inderal®) thrombolytic agent
amrinone lidocaine HCl (Xylocaine®) anticoagulant
bioavailability trocainide pulmonary embolism
clearance bretylium aspirin
acid-base reaction dobutamine streptokinase
mucopolysaccharide digoxin (Lanoxin®) heparin
hemostatic digitoxin hemorrhage
antidote vitamin K coumarins
antagonist vitamin K antagonists warfarin
iron protamine sulfate hematinics
ferrous sulfate hemoglobin deferoxamine (Desferal®)

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TOPIC 38

TOPICAL AGENTS (L/Ehrich/1)

  1. Discuss the pharmacodynamics and pharmacokinetics of local anesthetics.
  2. Compare and contrast emollients, protectants, irritants, keratolytics, and antiseptics.
  3. Discuss the types of topical agents that may be applied to skin, the eye, and the ear in certain disease states.
  4. Compare and contrast antitussives, expectorants, and mucolytics.

 

KEY WORDS:

irritants ophthalmic agent
emollient antiseptic
demulcent otic agent
lanolin glucocorticoids
petrolatum DMSO
protectant glaucoma
absorbent infection
astringent inflammation
talc mydriatics
artificial tears atropine
methyl salicylate phenylephrine
menthol miotics
keratolytic pilocarpine
salicylic acid antitussive
local anesthetic expectorant
ester mucolytic agent
amide productive cough
Na transport nonproductive cough
lidocaine opioids
procaine guaifenesin (glycerol guaiacolate, guaiacol)
cocaine acetylcysteine (Mucomyst®, Respair®)
streptokinase hydrocodone (Hycodan®)
antibiotics codeine
bacitracin chloramphenicol
polymyxin
antifungal agents

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TOPICS 39-40

DRUG INTERACTIONS (L/Ehrich/1); (AT/Ehrich/1)

  1. Discuss at least 3 mechanisms of drug interactions, comparing outcome and management for each.
  2. Provide examples of drugs that have direct chemical or physical interactions and relate this to effects on drug efficacy.
  3. Discuss interactions involving protein binding, provide examples where this occurs, and identify means for management that maintain safety and efficacy.
  4. Discuss agonist/antagonist interactions at drug receptor sites, describing effects on potency and efficacy.
  5. Discuss drug interactions involving changes in gastrointestinal absorption, relating this to changes in drug efficacy.
  6. Describe the role of metabolism in drug interactions, provide examples where this occurs, and discuss means for maintaining drug safety and efficacy when the interactions occur.
  7. Discuss drug interactions due to alteration in pH or electrolyte concentrations, including effects on safety and efficacy.
  8. Review therapies where consideration of drug interactions is needed, identifying mechanisms involved and potential methods for management to maintain safety and efficacy.
  9. Identify the primary characteristics of a drug that contributes to its potential to be involved in drug interactions. Provide examples of drugs with these properties.
  10. Explain how drugs with multiple receptors, actions, and/or uses could be involved in drug interactions. Provide examples.

 

KEY WORDS:

additive enzyme induction
antagonistic enzyme inhibition
antidote cytochrome P450
synergistic/potentiation drug excretion
electrostatic (acid-base) reactions tubular secretion
chelation tubular reabsorption
binding barbiturates
receptor steroid hormones
agonist antibiotics
antagonist coumadins
receptor adaptation vitamin K
tolerance diuretics
absorption neuromuscular blocking agents
transit time epinephrine
protein binding sulfa drugs
blood flow phenylbutazone
excretion rate parasympathomimetics
hepatic microsomal enzymes parasympatholytics

 

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