Pharmacology Review Flashcards
Ionization
Decreases a molecule or drug’s ability to pass through membranes
Potency
The amount of drug needed to produce a pharmacological effect
Efficacy
The maximum effect of a drug
Schedule 1 Drug
Use is forbidden except for research
Drugs remain here if the potential for abuse is too high
Researchers must apply to the FDA for clearance to use for research
Schedule 2 Drug
High potential for abuse, may lead to physical and/or psychological dependence
Prescription may be written for a maximum 30 day supply with no refills (or 3 separate prescriptions each for a 30-day supply)
Prescription may be renewed by telephone in an emergency, but a written prescription must follow within 72 hours
“Rx Only”
Monitored by DEA, which sets quotas for amount manufactured and distributed
Schedule 3 Drug
Moderate to low physical dependence possible
High psychological dependence possible
Prescription must be renewed after 6 months or 5 refills
May be renewed by telephone or fax
Higher penalties than Schedule 4 for illegal possession
“Rx Only”
Monitored by DEA, which has quotas for amount manufactured and distributed
Schedule 4 Drug
Lower potential for abuse
Prescription must be renewed after 6 months or 5 refills
May be renewed by telephone or fax
Lower penalties than Schedule 3 for illegal possession
“Rx Only”
Monitored by DEA
Schedule 5 Drug
No prescription necessary, except in California
Not over-the-counter
Monitored by DEA, which has quotas for amount manufactured and distributed
Official Name
The name of the drug used in the official drug reference, the U.S.P.
Generic Name
The name handed down through antiquity, or the “code” name used during the test phased that is based on the chemical name
Trade Name
AKA Brand name or proprietary name, copyrighted and restricted to use by a single company
PDR
Manufacturers buy space and provide information similar to drug inserts
Cross-referenced to generic and chemical names
Manufacturers may not promote off-label use
The Pharmacopeia of the United States of America (U.S.P.)
Includes single drugs
Very authoritative, one of 2 official drug reference texts
Older drugs removed in favor of newer, more effective ones
National Formulary (N.F.)
Very authoritative, one of 2 official drug reference texts
Includes single drugs and formulas for drug mixtures
Often includes drugs removed from the U.S.P.
AMA Drug Evaluations
Drugs grouped according to use
General discussion provided of each group, with both favorable and unfavorable judgments expressed
Drug Facts and Comparisons
Drugs grouped according to use
Comparison of various drug forms, including over-the-counter drugs
Color photos
American Hospital Formulary Service (A.H.F.S.)
Similar to Drug Facts and Comparisons
Local drug administration
Drug action occurs only at the site of application (usually topical)
Systemic drug administration
Drug is distributed throughout the body, and action may be on whole body or on target organ(s)
Parasympathetic Nervous System
Rest and Digest
Wet and Juicy
Muscarinic cholinergic receptors at effector organs
2 effector neurons
Sympathetic Nervous System
Fight or Flight
Adrenergic receptors at effector organs
2 effector neurons
Voluntary Nervous System
1 effector neuron
Alpha adrenergic receptors
Targets of sympathetic nervous system, stimulated by norepinephrine
Contracts smooth muscle of vasculature, pupil lens (dilation), and sphincters of GI tract (slows motility)
Beta 1 adrenergic receptors
Targets of sympathetic nervous system, stimulated by norepinephrine
Positive inotropic and chronotropic effects on the heart
Beta 2 adrenergic receptors
Targets of sympathetic nervous system, stimulated by norepinehrine
Relaxation of bronchiole smooth muscle and urinary bladder
Muscarinic cholinergic receptors
Targets of parasymoathetic nervous system, stimukated by acetylcholine
Contraction of smooth muscle in bladder and pupil lens (constriction), stimulates exocrine glands, negative chronotropic effect on heart, and slight dilation of peripheral blood vessels
Nicotinic cholinergic receptors
Targets in ganglia, neuromuscular junctions, and the adrenal medulla
Postural hypotension
Body is unable to constrict blood vessels in response to to postural changes, blood remains pooled in the lower half of the body
Adrenergic antagonists may cause this, may be treated with adrenergic agonists
Pressor
Indicated for: Hypotension
MOA: Elevates blood pressure
Beta blockers
Indicated for: Hypertension, atrial fibrillation, atrial flutter, angina, wide angle glaucoma (timolol maleate), counteracting digitalis toxicity
MOA: Negative chronotropic, negative inotropic, negative dromotropic effects. Inhibits the release of renin, decreases fluid production in the eye
SE: GI, possible AV-block, bronchiole constriction
CI: Asthma, AV-block, heart failure
ACE Inhibitors
Indicated for: Heart failure (first-line therapy), hypertension, reduce diabetic nephropathy NOT A GOOD OPTION FOR BLACK PATIENTS
MOA: Decreases release of aldosterone (less fluid retention), less vasoconstriction
SE: Persistent cough, rash, proteinuria, GI
CI: Pregnancy, hyperkalemia, potassium-sparing diuretics (aldosterone antagonists/spironolactone, triamterene/amiloride)
Nitric Oxide (NO)
Indicated for: Angina
MOA: Relaxes smooth muscle of vasculature, decreases workload of heart, slightly dilates coronary vessels
SE: Tachycardia, headache, postural hypotension, GI
CI: Administration which send it to the liver, glaucoma, head trauma, storage in heat or light
Glycosides
Indicated for: Congestive heart failure, atrial flutter
MOA: Increase Ca release within heart muscle for positive inotropic effect and negative dromotropic effects, increase vagal tone
SE: GI, tinted vision, double vision, nervous irritability, ventricular tachycardia, ventricular fibrillations, A-V block
CI: Recent heart attack, ventricular tachycardia, partial heart block, cardioversion, Ca administration, hypokalemia, renal/hepatic disorder in older patients, non-potassium-sparing diuretics (thiazide, furosemide, ethacrynic acid, bumetanide, torsemide)
Adrenergic agonists/Antocholinergic agents
Indicated for: EMERGENCY cardiac arrest, hypotensive crisis, AV block, bradycardia
MOA: Positive inotropic effect, positive dromotropic effect, or blocks muscarinic negative chronotropic effect
SE: Tachycardia/arrhythmias, CNS stimulation, hypertenion
CI: Chronic use, congestive heart failure, angina (unless emergency), hypertension
Lidocaine
Indicated for: Ventricular tachycardia, cardiac surgery, heart attack, digitalis toxicity
MOA: Na channel blocker, negative dromotropic effect
Quinidine
Indicated for: Atrial fibrillation, atrial flutter, ventricular tachycardia, premature systoles
MOA: Na channel blocker, decrease excitability, negative dromotropic effect, negative inotropic effect, anticholinergic action at AV node to prevent cardiac slowing
SE: Cinchoism (GI, ototoxicity, blurred vision/blindness, headache)
CI: AV block, cardiac failure, allergy, glaucoma, urinary retention, hypokalemia or hyperkalemia
Heparin
Indicated for: Blood clot prevention, anaphylaxis
MOA: Prevents conversion of prothrombin to thrombin and fibrinogen to fibrin
CI: Bleeding tendencies
Must be given parenterally
Coumarin derivatives
Indicated for: Blood clot prevention
MOA: Interference with vitamin K and with formation of prothrombin
CI: Bleeding tendencies
Aspirin/Salicylates
Indicated for: Pain, fever, inflammation, and venous/coronary thrombosis prevention
MOA: Long-lasting COX-2 Inhibition
SE: GI irritation, CNS stimulation, possible respiratory aklalosis from respiratory stimulation, transient ototoxicity, possible decrease in GFR
CI: Children/teenagers with flu or chicken pox, bleeding disorders
Plasma-protein bound, CP450
NSAIDS
Indicated for: Pain, fever, inflammation and blood clot prevention
MOA: Short-acting COX-2 inhibition
SE: Kidney damage, liver damage, bone marrow effects
Minimal GI effects
Recombinant Tissue Plasminogen Activator (rTPA)
Indicated for: Acute pulmonary embolism, coronary thrombosis, strokes, deep venous thrombosis, arterial clots
MOA: Convert plasminogen to plasmin, dissolving the clot and preventing clot formation
CI: Bleeding disorders, cerebrovascular accident over 2 hours old, tumor, surgery/childbirth within the last few months
Iron
Indicated for: Anemia
MOA: Replaces necessary component of hemoglobin
SE: Headache, GI, staining/injury of teeth
Vitamin B12
Indicated for: Anemia
MOA: Replaces necessary component for DNA synthesis
Folic acid:
Indicated for: Anemia
MOA: Replaces necessary component for DNA synthesis
SE: May allow nerve damage to progress if B12 deficiency
Red blood cells/whole blood
Indicated for: Anemia
MOA: Replaces blood cells
CI: Hepatitis, transfusion reactions
Erythropoietin
Indicated for: Anemia
MOA: Stimulates production of red blood cells
CNS Stimulants
Amphetamines/Ritalin: ADHD
Xanthines: Pain from headaches, asthma, bronchitis, emphysema, drowsiness
Cocaine: Derivatives used as local anesthetic