WGU D116 NEWEST UPDATE 2024 COMPREHENSIVE
QUESTIONS AND DETAILED VERIFIED ANSWERS
APPROVED STUDY GUIDE (UNIT 3) A+
A group of nursing students asks a nurse to explain the blood-brain barrier.
The nurse would be correct to say that the blood-brain barrier __________. - (correct
answer) Prevents some potentially toxic substances from crossing into the central
nervous system
Infants are more sensitive to CNS drugs and require lower doses
Prevents highly ionized and protein-bound drugs from entering
Allows lipid-soluble drugs drugs and drugs that use specific transport systems to enter
A patient asks his provider to explain what drug tolerance means.
The provider responds by telling the patient that when tolerance occurs, it means the
patient __________. - (correct answer) may need increased amounts of the drug
over time
When tolerance develops, a dose increase may be needed because a decreased
response may occur with prolonged use
A pregnant patient is in premature labor.
Which class of drug will she be given? - (correct answer) Beta 2 agonist (helper)
Part of the peripheral adrenergic receptor subtypes (epi/norepi)
Beta2 agonists cause relaxation of the uterine muscles, slowing or stopping the
contractions that precipitate labor
*Beta2 ANTagonist would increase constriction of the uterine muscles*
What type of drug class has effects on the heart and arterioles? - (correct answer)
Alpha1 agonist
Anticcholinergic drugs are given for what effects? - (correct answer) Urinary and GI
tracts
They do not affect the urine muscles
A nurse is explaining the activation of beta-2 receptors to nursing students during a
clinical rotation at the hospital.
Which statement by a student demonstrates a need for further teaching? - (correct
answer) "Beta2 activation results in contraction of the uterine muscles"
,*Beta2 activation DOES result in vasodilation of skeletal muscles, bronchodilation, and
glycogenolysis, and RELAXATION of uterine muscles*
A provider is teaching a patient about a medication that alters the sympathetic nervous
system functions. To evaluate understanding, the provider asks the patient to describe
which functions the sympathetic nervous system regulates.
Which answer indicates the need for further teaching? - (correct answer) "The
digestive functions of the body"
All apart of the sympathetic nervous system:
1. fight or flight
2. cardiovascular system
3. body temperature
A patient is experiencing toxic side effects from atropine, including delirium and
hallucinations.
Which medication will the provider ask the nurse to administer? - (correct answer)
Physostigmine (Mestinon, Regonol)
Drug of choice for treating poisoning from atropine and other drugs that cause
muscarinic blockage ie: atropine (Muscarinic Antagonist)
What drug is used to treat Alzheimer's Disease? - (correct answer) Donepezil
A patient who has myasthenia gravis will be taking neostigmine.
What should the nurse emphasize when teaching this patient about the medication? -
(correct answer) Take a supplementary dose before exercise
You have ordered pilocarpine. You understand that the drug stimulates muscarinic
receptors.
Which action would you expect the drug to have? - (correct answer) Lowering of
intraocular pressure in pts with glaucoma
Also used to treat dry mouth because it increases salivary glands "Rest and digest"
Muscarinic agents are related to parasympathetic response
You are teaching a nursing student about the two classes of adrenergic agonist drugs.
Which statement by the nursing student indicates understanding of the teaching? -
(correct answer) Catecholamines often require continuous infusion to be effective
Catecholamines undergo rapid degradtion by monoamine oxidase MAO and COMT.
Brief duration of action and continuous IV to be effective
They DO NOT cross the BBB, noncatecholamines do
, Noncatecholamines can be given orally but catehcholamines can not
Because they cause vasoconstriction, alpha1-adrenergic agonists are especially useful
for __________. - (correct answer) causing hemostasis in skin and mucous
membranes
Example is epinephrine
These agents can increase BP but are not the primary drug used except in emergency
situations
A nursing student asks you why epinephrine, and no other adrenergic agonists, is used
to treat anaphylactic shock.
What will you tell the student? - (correct answer) Epinephrine has the ability to
activate multiple types of adrenergic receptors
Beta 1 receptors increase CO and BP
Beta 2 receptors increase bronchodilation
Alpha 1 receptors causes vasoconstriction and increases HR and BP
Dopamine is administered to a patient who has been experiencing hypotensive
episodes.
Other than an increase in blood pressure, which indicator would the nurse use to
evaluate a successful response? - (correct answer) Increase in urine output
because of the increase in cardiac output which was a result of the increase in BP
A patient is taking a beta-adrenergic antagonist medication for angina pectoris and asks
the nurse how the drug works to relieve the discomfort associated with this condition.
Which statement by the patient after the nurse's teaching indicates understanding of the
drug's effects? - (correct answer) Helps reduce the heart's oxygen needs
Blocking beta 1 receptors in the heart reduces cardiac work by reducing HR, force of
contraction, and the velocity of impulse through the AV node
Beta blockers results in bronchoconstriction
CO decreased
A male patient is being treated for benign prostatic hyperplasia (BPH) and has stopped
taking his alpha-adrenergic antagonist medication because of ejaculatory difficulties.
Which medication should you prescribe? - (correct answer) Alfuzosin
Does not interfere with ejaculation
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