CLASSIFICATIONS AND DOSAGE CALCULATIONS BY CYNTHIA WATKINS
Chapter 1. History of Pharmacology
Pharmacology Clear and Simple-
A Guide to Drug Classifications and Dosage Calculations 3rd Edition Watkins Test Bank
1.
A nurse working in radiology administers iodine to a patient who is having
acompute d tomography (CT) scan. The nurse working on the oncology unit
administers chemo therapy to patients who have cancer. At the Public
HealthDepartment, a nurse admi nisters a measles-mumps-rubella (MMR) vaccine
to a 14-month-
old child as a routine immunization. Which branch of pharmacology best describes th
A) Pharmacoeconomics
B) Pharmacotherapeutics
C) Pharmacodynamics
D) Pharmacokinetics
Ans: B
Feedback:
Pharmacology is the study of the biologic effects of chemicals. Nurses are involved
with clinical pharmacology or pharmacotherapeutics, which is a branch of
pharmaco logythat deals with the uses ofdrugs to treat, prevent, and diagnose
disease. The ra diology nurse is administering a drug to help diagnose a disease.
The oncology nurse is administering a drug to help treata disease.
Pharmacoeconomics includes any cos ts involved in drug
therapy.Pharmacodynamics involves how a drug affects the body
, and
pharmacokinetics is how the body acts on the body.
2.
A physician has ordered intramuscular (IM) injections of morphine, a nar
cotic, every 4 hours as needed for pain in a motor vehicle accident victim.
The nurseisaware thisdrughas a highabusepotential. Under what categ
A) Schedule I
B) Schedule II
C) Schedule III
D) Schedule IV
Ans: B
, Feedback:
Narcotics with a high abuse potential are classified as Schedule II drugs be
cause of severe dependence liability. Schedule I drugs have high abuse pot
ential and no accepted medical use. Schedule III drugs have a lesser abuse
potential than II and an accepted medical use. Schedule IV drugs have lo
w abuse potential and limited dependence liability.
3.
When involved in phase III drug evaluation studies, what responsibiliti
A) Working with animals who are given experimental drugs
B) Choosing appropriate patients to be involved in the drug study
C) Monitoring and observing patients closely for adverse effects
D) Conducting research to determine effectiveness of the drug
Ans: C
Feedback:
Phase III studies involve use of a drug in a vast clinical population in
which patients are asked to record any symptoms they experience
while taking t he drugs. Nurses maybe responsible for helping
collectandanalyze the in formation to be shared with the Food and
Drug Administration (FDA) but w ould not conduct research
independently because nurses do not prescribe medications. Use of
animals in drug testing is done in the preclinical trials
. Select patients who are involved in phase II studies to participate in
studi es where the participants have the disease the drug is intended to
treat. T hese patients are monitored closely for drug action and
adverse effects. P
hase I studies involve healthy human volunteers who are usually paid for
t heir participation. Nurses may observe for adverse effects and toxicity.
4.
What concept is considered when generic drugs are substituted for br
A) Bioavailability
B) Critical concentration
C) Distribution
D) Half-life
Ans: A
Feedback:
, Bioavailability is the portion of a dose of a drug that reaches the systemic
circulation and is available to act on body cells. Binders used in a generic
drug may not be the same as those used in the brand name drug. Therefore
, the way the body breaks down and uses the drug may differ, which may
eliminate a generic drug substitution. Critical concentration is the amount
of a drug that is needed to cause a therapeutic effect and should not differ
between generic and brand name medications. Distribution is the phase of
pharmacokinetics, which involves the movement of a drug to the bodys ti
ssues and is the same in generic and brand name drugs. A drugs half-
life is the time it takes for the amount of drug to decrease to half the peak
level, which should not change when substituting a generic medication.
5.
A nurse is assessing the patients home medication use. After listening to
A) Do you take any generic medications?
B) Are any of these medications orphan drugs?
C) Are these medications safe to take during pregnancy?
D) Do you take any over-the-counter medications?
Ans: D
Feedback:
It is important for the nurse to specifically question use of over-the-
counter medications because patients may not consider them
important. T he patient is unlikely to know the meaning of orphan
drugs unless they too
are health care providers. Safety during pregnancy, use of a generic
medicat ion, or classification of orphandrugs are things the patientwould
be unable
to answer but could be found in reference books if the nurse wishes to
res earch them.
6.
After completing a course on pharmacology for nurses, what will the nu
A) Everything necessary for safe and effective medication administration
B)
Current pharmacologic therapy; the nurse will not require o
C)
General drug information; the nurse can consult a drug guide for s
D)
The drug actions that are associated with each classific
Ans: C
Feedback: