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Chapter 10: Principles of Pharmacology
paramedic studies
62 cards·by nasonrumfield
flashcards
What are the 6 "Rights" of medication administration?
Right patient, right medication, right dose, right route, right time, right documentation
and reporting
What are examples of a "Schedule 1" medication?
Heroin, marijuana, LSD
What is the description for a "Schedule 1" medication?
They have no recognized medical purpose and have a high abuse potential
How does a "Schedule 5" medication compare to a "Schedule 1?"
They have the lowest potential for abuse and include things like cough medicine
Regarding medication, what is the difference between synthetic and semi-synthetic?
Synthetic is made completely in a lab, semi-synthetic is made from chemicals that are derived
from natural sources
What is a medication's "chemical name?"
The name given during initial development
Why is a medication given a "generic" name?
To promote consistency and avoid duplication
Why is a medication given a "brand name?"
For marketing purposes
Describe "Pharmacodynamics"
As a med is given, it begins to alter a function or process in the body
Describe "Pharmacokinetics"
The actions the body takes on a medication
What's the difference between endogenous and exogenous?
Endogenous chemicals occur naturally within the body, exogenous is a synthetic form of that
What does an "agonist" drug do?
Enhances cellular activity
What does an "antagonist" drug do?
Blocks cellular activity
What is the agonist effect of an Alpha-1 receptor?
Vasoconstriction of arteries and veins
What is the agonist effect of an Alpha-2 receptor?
Insulin restriction, glucagon secretion, inhibition of norepinephrine release
What is the agonist effect of an Beta-1 receptor?
increased heart rate, increased myocardial contractility and conduction, renin secretion
for urinary retention
What is the agonist effect of an Beta-2 receptor?
Bronchial relaxation, insulin secretion, uterine relaxation, arterial dilation
What is the agonist effect of a dopaminergic receptor?
Vasodilation of renal and mesenteric arteries
What is the agonist effect of a nicotinic receptor?
Allows acetylcholine (ACh) to stimulate muscle contraction
What is the agonist effect of Muscarinic-2 as a receptor?
Offsets sympathetic stimulation, decreases heart rate, contractility, and conduction
velocity
What happens when the "potency" of a medication increases?
The dose required for a particular cellular response decreases
What is "efficacy?"
The ability to initiate or alter cell activity in a desired manner
What are patients at extremes of age disproportionately prone to?
Paradoxical medication reactions
What does the pharmacokinetics section of medication profiles typically state?
The onset, peak, and duration of effect
Meds should be given "off-label" only when they are specifically approved for this by whom?
The service medical director
What are the 4 possible effects of biotransformation?
Inactive med turns active - active med turns inactive - med changes into another med - med
transforms into something easier to eliminate
What types of damage to med containers can make them ineffective or unsafe for use?
Direct sunlight, extreme heat or cold, physical damage to containers
What is an adverse effect vs. a side effect?
Adverse effects are an undesired response to a med - side effects are an addition to the
intended effect
Repeated exposure to a med within a particular class has the potential to cause what?
A tolerance, affecting other medications in the same class
Patients receiving multiple meds are at risk of what?
Unintended interactions between the various substances
What do Class 1 Antidysrhythmic medications do?
Keeps cardiac function undisturbed by slowing movement of Na+ through channels
What do Class 2 Antidysrhythmic medications do?
They act as adrenergic blockers, and inhibit catecholamine activation
What do Class 3 Antidysrhythmic medications do?
Increase the duration of phase 1, 2, and 3 of the cardiac cycle, prolong the absolute
refractory period, and treats tachycardias
What do Class 4 Antidysrhythmic medications do?
Act as calcium channel blockers, reduce blood pressure, control heart rate, and may increase
myocardial oxygen delivery
What do ACE inhibitors do?
Alter the function of the renin-angiotensin system in the body
What is Dopamine frequently used for?
To treat hypotension refractory to volume resuscitation
What is Vasopressin?
A potent vasopressor given with epi during cardiac arrest
What is sodium nitroprusside and what is its use?
A potent IV vasodilator, it is used when hypotension is desired
How does Hydralazine work and when is it used?
It dilates arterioles, and is used for hypertensive emergencies to lower systemic vascular
resistance
What is Furosemide and how is it used?
It's a diuretic, used for managing hypertension, causes renal artery vasodilation, and
promotes urinary excretion from kidneys
What are "PRBCs" and what do they contain?
"Packed" Red Blood Cells - They contain 225-250ml of concentrated RBCs
What is Fresh Frozen Plasma (FFP) used to treat?
Impaired clotting, usually administered following a trauma or hemorrhage
What do Fibrinolytics do?
Dissolve blood clots, and treat AMI and stroke
What are Phenytoin and Fosphenytoin used for?
To prevent seizures and on bipolar disorder
What properties do Promethazine and Prochlorperazine have?
Antiemetic and antipsychotic
What properties do Metoclopramide have and what does it do?
Antiemetic properties, it increases gastric motility
What is magnesium sulfate used for?
Cardiac arrest, corrects hypomagnesemia, treats seizures in pregnant patients, and treats
severe asthma
How does a "partial agonist" compare to an agonist?
It does not initiate as much cell activity or change as an agonist
What factors affect response to meds?
Age, weight, environment, pregnancy, psychosocial factors
What are the changes in pharmacokinetics in geriatric patients compared to?
Those observed in young children
How does an anticoagulant medication work?
Enhances Antithrombin III to inhibit blood coagulation
What is Thrombocytopenia?
A low platelet level in the blood
What are the implications of pregnancy category "A?"
No evidence of risk in any trimester and the possibility of fetal harm appears remote
What are the implications of pregnancy category "B?"
Animal studies have not demonstrated any risks
What are the implications of pregnancy category "C?"
Animal studies revealed adverse effects on the fetus
What are the implications of pregnancy category "D?"
Positive evidence of human fetal risk
What are the implications of pregnancy category "X?"
Studies in animals and humans demonstrated fetal abnormalities
Regarding the GI, what is motility?
The ability a med has to pass through the GI tract and into the bloodstream
What factor is considered in perfusion of the GI system?
GI pH
What in the stomach can affect GI motility and oral med absorption?
Presence of food, liquids, or chemicals
What are the intraosseous sites for the popliteal vein, the axillary vein, and the femoral
vein?
Proximal Tibia, Proximal Humerus, and Femur
What are the intraosseous sites for the Great Saphenous Vein, and the internal mammary and
azygos veins?
Distal Tibia, and Manubrium