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Test Bank for Karch’s Focus on Nursing Pharmacology 9th Edition by Rebecca G. Tucker Chapter 1-60| Complete Guide €11,76
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Test Bank for Karch’s Focus on Nursing Pharmacology 9th Edition by Rebecca G. Tucker Chapter 1-60| Complete Guide 9781975180409 Chapter 01 - Introduction to Drugs A nurse working in radiology administers iodine to a patient who is having a computed tomography(CT) scan. The nurse working on the on...

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,Chapter 01 - Introduction to Drugs


A nurse working in radiology administers iodine to a patient who is having a computed tomography(CT) scan.
The nurse working on the oncology unit administers chemotherapy to patients who have cancer. At
the Public Health Department, a nurse administers a measles-mumps-rubella (MMR) vaccine to a
14-month-old child as a routine immunization. Which branch of pharmacology best describes the
actions of all three nurses?


Pharmacoeconomics


Pharmacotherapeutics


Pharmacodynamics


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 pharmacology that deals with the uses of
drugs to treat, prevent, and diagnose disease. The radiology nurse is administering a drug to help
diagnose a disease. The oncology nurse is administering a drug to help treat a disease.
Pharmacoeconomics includes any costs involved in drug therapy. Pharmacodynamics involves how a
drug affects the body and pharmacokinetics is how the body acts on the body.


A physician has ordered intramuscular (IM) injections of morphine, a narcotic, every 4 hours as neededfor
pain in a motor vehicle accident victim. The nurse is aware this drug has a high abuse potential. Under
what category would morphine be classified?


Schedule I


Schedule II


Schedule III


Schedule IV


Ans: B


Feedback:


Narcotics with a high abuse potential are classified as Schedule II drugs because of severe dependence

, liability. Schedule I drugs have high abuse potential and no accepted medical use. Schedule III drugs
have a lesser abuse potential than II and an accepted medical use. Schedule IV drugs have low abuse
potential and limited dependence liability.


When involved in phase III drug evaluation studies, what responsibilities would the nurse have?


Working with animals who are given experimental drugs


Choosing appropriate patients to be involved in the drug study


Monitoring and observing patients closely for adverse effects


Conducting research to determine effectiveness of the drugAns: 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 the drugs. Nurses may be responsible for helping collect
and analyze the information to be shared with the Food and Drug Administration (FDA) but would 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
studies where the participants have the disease the drug is intended to treat. These patients are monitored
closely for drug action and adverse effects. Phase I studies involve healthy human volunteers who are
usually paid for their participation. Nurses may observe for adverse effects and toxicity.


What concept is considered when generic drugs are substituted for brand name drugs?


Bioavailability


Critical concentration


Distribution


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 body’s tissues and is the

, same in generic and brand name drugs. A drug’s 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.


A nurse is assessing the patient’s home medication use. After listening to the patient list current medications,
the nurse asks what priority question?


Do you take any generic medications?


Are any of these medications orphan drugs?


Are these medications safe to take during pregnancy?


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. The patient is unlikely to know the meaning of orphan drugs unless
they too are health care providers. Safety during pregnancy, use of a generic medication, or classification
of orphan drugs are things the patient would be unable to answer but could be found in reference
books if the nurse wishes to research them.


After completing a course on pharmacology for nurses, what will the nurse know? Everything


necessary for safe and effective medication administration


Current pharmacologic therapy; the nurse will not require ongoing education for 5 years.


General drug information; the nurse can consult a drug guide for specific drug information.


The drug actions that are associated with each classification of medicationAns: C


Feedback:


After completing a pharmacology course nurses will have general drug information needed for safe and
effective medication administration but will need to consult a drug guide for specific drug information
before administering any medication. Pharmacology is constantly changing, with new drugs entering the
market and new uses for existing drugs identified. Continuing education in pharmacology is essential to
safe practice. Nurses tend to become familiar with the medications they administer most often, but there
will always be a need to research new drugs and also those the nurse is not familiar with because no
nurse knows all medications.

, A nurse is instructing a pregnant patient concerning the potential risk to her fetus from a Pregnancy
Category B drug. What would the nurse inform the patient?


Adequate studies in pregnant women have demonstrated there is no risk to the fetus.


Animal studies have not demonstrated a risk to the fetus, but there have been no adequate studiesin pregnant
women.


Animal studies have shown an adverse effect on the fetus, but there are no adequate studies inpregnant
women.


There is evidence of human fetal risk, but the potential benefits from use of the drug may beacceptable
despite potential risks.


Ans: B


Feedback:


Category B indicates that animal studies have not demonstrated a risk to the fetus. However, there have
not been adequate studies in pregnant women to demonstrate risk to a fetus during the first trimester of
pregnancy and no evidence of risk in later trimesters. Category A indicates that adequate studies in
pregnant women have not demonstrated a risk to the fetus in the first trimester or in later trimesters.
Category C indicates that animal studies have shown an adverse effect on the fetus, but no adequate
studies in humans. Category D reveals evidence of human fetal risk, but the potential benefits from the
use of the drugs in pregnant women may outweigh potential risks.


Discharge planning for patients leaving the hospital should include instructions on the use of over-the- counter
(OTC) drugs. Which comment by the patient would demonstrate a good understanding of OTC drugs?


OTC drugs are safe and do not cause adverse effects if taken properly.


OTC drugs have been around for years and have not been tested by the Food and Drug
Administration (FDA).


OTC drugs are different from any drugs available by prescription and cost less.


OTC drugs could cause serious harm if not taken according to directions.


Ans: D


Feedback:


It is important to follow package directions because OTCs are medications that can cause serious harm
if not taken properly. OTCs are drugs that have been determined to be safe when taken as directed;
however, all drugs can produce adverse effects even when taken properly. They may have originally
been prescription drugs that were tested by the FDA or they may have been grandfathered in when
the

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