NR565 / NR 565 MIDTERM STUDY GUIDE
(LATEST 2026 UPDATED): ADVANCED
PHARMACOLOGY FUNDAMENTALS –
CHAMBERLAIN. EXAM QUESTIONS
AND ANSWERS 100% PASS 2026
EDITION
APRN prescribing role - ANS Prescriptive authority for nurse practitioners also regulates
prescribing rights beyond medications and controlled substances. These rights include
therapeutic devices and services and are outlined in state practice laws and regulations and
include Durable Medical Equipment (DME) such as wheelchairs, power scooters, hospital beds,
portable oxygen equipment, handicap placards, etc. and medical services such as Physical
Therapy (PT), Occupational Therapy (OT), home health services, etc. Prescriptive authority
encompasses more than writing a prescription correctly. It requires adherence to ethical
guidelines to ensure that patients are safeguarded from harm. Ethical prescribing starts with
being well-informed about medications. Mechanism of action, efficacy, and safety are important
considerations, as are a patient's distinct needs and circumstances, including the number of
medications prescribed (Mitchell & Oliphant, 2016). Most patients receiving a prescription are
taking other medications, whether prescription or over-the-counter. Appropriate selection,
dosing, and duration of pharmaceutical agents are key to maximizing outcomes and minimizing
adverse effects
benefits of full practice authority - ANS Nurse practitioners have the autonomy to evaluate
patients, diagnose, order and interpret tests, initiate and manage treatments and prescribe
medications, including controlled substances without physician oversight
1
@2026 EDITION ALLRIGHTS RESERVED
,promoting positive outcomes through prudent prescribing practices - ANS Administering
medications and prescribing medications are two distinct processes. Prescription writing
requires prudent and deliberate decision-making processes to maintain patient safety and
reduce liability, including:
*documentation of a provider-patient relationship for the recipient of the prescribed
medications
*documentation of a thorough history and physical examination for the recipient
*documentation of discussions regarding risk factors, side effects, or therapy options
*documentation of drug monitoring or titration plan, if applicable
*documentation of consultations, if any
avoidance of prescribing medications for self, family, or friends
Rational drug selection requires a logical approach that includes the formulation of a diagnosis
based on clinical reasoning and the selection and monitoring of the most appropriate
pharmacological treatment
Considerations include: Cost, guidelines, availability, interactions, side effects, allergies,
hepatic/renal functions, need for monitoring, & special populations
Beer's Criteria - ANS identifies drugs with a high likelihood of causing adverse effects in older
adults. Accordingly, drugs on this list should generally be avoided in adults older than 65 years
except when the benefits are significantly greater than the risks.
Pharmacodynamics - ANS the study of the biochemical and physiologic effects of drugs on
the body and the molecular mechanisms by which those effects are produced
Pharmacokinetics - ANS the study of drug movement throughout the body
2
@2026 EDITION ALLRIGHTS RESERVED
,Pharmacogenomics - ANS the study of how genes affect a person's response to drugs. The
purpose of this is to combine the sciences of genomics and pharmacology to provide
individualized, targeted, safe drug therapies to patients
CYP450 inducers - ANS Inducers are xenobiotics (medications and environmental agents) that
elevate CYP450 enzyme activity by increasing enzyme synthesis. This action leads to additional
sites available for biotransformation. The increased number of sites enhances medication
metabolism, decreasing the concentration of the "parent drug" while increasing metabolite
production.
Inducers = Increase medication metabolism
(Carbamazepine, Rifampin, Alcohol, Phenytoin, Griseofulvin, Phenobarbital, Sulfonylureas)
CYP450 inhibitors - ANS Inhibitors are medications that inhibit the metabolic activity of one
or more of the CYP450 enzymes. Medications that inhibit an enzyme potentially slows that
enzyme's activity or blocks the activity required for the metabolism of other medications,
thereby increasing the levels of medications dependent on that particular enzyme for
biotransformation. Inhibitors = decrease medication metabolism (Valproate, Isoniazid,
Sulfonamides, Amiodarone, Chloramphenicol, Ketoconazole, Grapefruit Juice, Quinidine)
cultural influences in prescribing - ANS The greatest concern surrounding race-based therapy
has to do with genetic variability. We know there is great diversity within and among racial
groups; therefore, a "one fits all" approach based on race is unwise. Still, we can use known
associations to guide choices. For example, differences in metabolism between people with East
Asian and European heritage are common. The provider can use this knowledge to guide initial
dosing (with adjustment, as indicated based on response) if genetic testing is not feasible or
warranted
Polypharmacy: Definition, challenges, and outcomes - ANS treatment with multiple drugs
greatly increases the risk for interactions. Some of these interactions are negligible, but some
can have life-threatening consequences. It is of crucial importance to ask the patient about all
current drugs, including over-the-counter (OTC) medications and other herbal preparations.
3
@2026 EDITION ALLRIGHTS RESERVED
, Many patients do not consider OTC or alternative pharmaceuticals as "medications" and may
not mention them unless you ask specifically.
Acute Pain Management - ANS
Chronic Pain Management - ANS
Opioid Management - ANS
Regulations of Controlled Substances - ANS The U.S. Department of Justice Drug Enforcement
Agency (DEA) coordinates with local, state, and federal agents to reduce illicit drug use. The DEA
enacted the Controlled Substances Act (CSA) in 1970 to regulate drugs and other substances
based on their potential for abuse and dependency. Five schedules of controlled substances
were created that are updated annually. Classes of scheduled substances include narcotics,
depressants, stimulants, hallucinogens, and anabolic steroids. The DEA issues eligible providers
with a registration number to write prescriptions for controlled substances. Characteristics of a
valid DEA number include:
-The first letter identifies the type of provider: A=before 1985; B=after 1985; F=after 2007;
M=nurse practitioner or physician assistant
-The 2nd letter the 1st letter of the provider's last name at the time of initial registration
Example: Tammy Greene applies for and receives a DEA number of MG2705208
M=nurse practitioner and G=Greene
Opioid Epidemic & Responsible Prescribing - ANS
Opioid Use Disorder - ANS a pattern of use that leads to significant impairment or distress.
Typically, this disorder is marked by unsuccessful efforts to reduce or control use resulting in the
inability to fulfill work, school, or home responsibilities. Opioid use disorder is different from
drug tolerance and physical dependence, which may also exist. Opioid use creates high levels of
positive reinforcement, increasing the likelihood of continued use. It is often a chronic lifelong
disorder, leading to serious consequences such as disability and death. Although it is similar to
other substance use disorders, it has distinct features that have fueled the current opioid
epidemic. Opioids can lead to physical dependence in only 4-8 weeks. Abruptly stopping use in
4
@2026 EDITION ALLRIGHTS RESERVED
(LATEST 2026 UPDATED): ADVANCED
PHARMACOLOGY FUNDAMENTALS –
CHAMBERLAIN. EXAM QUESTIONS
AND ANSWERS 100% PASS 2026
EDITION
APRN prescribing role - ANS Prescriptive authority for nurse practitioners also regulates
prescribing rights beyond medications and controlled substances. These rights include
therapeutic devices and services and are outlined in state practice laws and regulations and
include Durable Medical Equipment (DME) such as wheelchairs, power scooters, hospital beds,
portable oxygen equipment, handicap placards, etc. and medical services such as Physical
Therapy (PT), Occupational Therapy (OT), home health services, etc. Prescriptive authority
encompasses more than writing a prescription correctly. It requires adherence to ethical
guidelines to ensure that patients are safeguarded from harm. Ethical prescribing starts with
being well-informed about medications. Mechanism of action, efficacy, and safety are important
considerations, as are a patient's distinct needs and circumstances, including the number of
medications prescribed (Mitchell & Oliphant, 2016). Most patients receiving a prescription are
taking other medications, whether prescription or over-the-counter. Appropriate selection,
dosing, and duration of pharmaceutical agents are key to maximizing outcomes and minimizing
adverse effects
benefits of full practice authority - ANS Nurse practitioners have the autonomy to evaluate
patients, diagnose, order and interpret tests, initiate and manage treatments and prescribe
medications, including controlled substances without physician oversight
1
@2026 EDITION ALLRIGHTS RESERVED
,promoting positive outcomes through prudent prescribing practices - ANS Administering
medications and prescribing medications are two distinct processes. Prescription writing
requires prudent and deliberate decision-making processes to maintain patient safety and
reduce liability, including:
*documentation of a provider-patient relationship for the recipient of the prescribed
medications
*documentation of a thorough history and physical examination for the recipient
*documentation of discussions regarding risk factors, side effects, or therapy options
*documentation of drug monitoring or titration plan, if applicable
*documentation of consultations, if any
avoidance of prescribing medications for self, family, or friends
Rational drug selection requires a logical approach that includes the formulation of a diagnosis
based on clinical reasoning and the selection and monitoring of the most appropriate
pharmacological treatment
Considerations include: Cost, guidelines, availability, interactions, side effects, allergies,
hepatic/renal functions, need for monitoring, & special populations
Beer's Criteria - ANS identifies drugs with a high likelihood of causing adverse effects in older
adults. Accordingly, drugs on this list should generally be avoided in adults older than 65 years
except when the benefits are significantly greater than the risks.
Pharmacodynamics - ANS the study of the biochemical and physiologic effects of drugs on
the body and the molecular mechanisms by which those effects are produced
Pharmacokinetics - ANS the study of drug movement throughout the body
2
@2026 EDITION ALLRIGHTS RESERVED
,Pharmacogenomics - ANS the study of how genes affect a person's response to drugs. The
purpose of this is to combine the sciences of genomics and pharmacology to provide
individualized, targeted, safe drug therapies to patients
CYP450 inducers - ANS Inducers are xenobiotics (medications and environmental agents) that
elevate CYP450 enzyme activity by increasing enzyme synthesis. This action leads to additional
sites available for biotransformation. The increased number of sites enhances medication
metabolism, decreasing the concentration of the "parent drug" while increasing metabolite
production.
Inducers = Increase medication metabolism
(Carbamazepine, Rifampin, Alcohol, Phenytoin, Griseofulvin, Phenobarbital, Sulfonylureas)
CYP450 inhibitors - ANS Inhibitors are medications that inhibit the metabolic activity of one
or more of the CYP450 enzymes. Medications that inhibit an enzyme potentially slows that
enzyme's activity or blocks the activity required for the metabolism of other medications,
thereby increasing the levels of medications dependent on that particular enzyme for
biotransformation. Inhibitors = decrease medication metabolism (Valproate, Isoniazid,
Sulfonamides, Amiodarone, Chloramphenicol, Ketoconazole, Grapefruit Juice, Quinidine)
cultural influences in prescribing - ANS The greatest concern surrounding race-based therapy
has to do with genetic variability. We know there is great diversity within and among racial
groups; therefore, a "one fits all" approach based on race is unwise. Still, we can use known
associations to guide choices. For example, differences in metabolism between people with East
Asian and European heritage are common. The provider can use this knowledge to guide initial
dosing (with adjustment, as indicated based on response) if genetic testing is not feasible or
warranted
Polypharmacy: Definition, challenges, and outcomes - ANS treatment with multiple drugs
greatly increases the risk for interactions. Some of these interactions are negligible, but some
can have life-threatening consequences. It is of crucial importance to ask the patient about all
current drugs, including over-the-counter (OTC) medications and other herbal preparations.
3
@2026 EDITION ALLRIGHTS RESERVED
, Many patients do not consider OTC or alternative pharmaceuticals as "medications" and may
not mention them unless you ask specifically.
Acute Pain Management - ANS
Chronic Pain Management - ANS
Opioid Management - ANS
Regulations of Controlled Substances - ANS The U.S. Department of Justice Drug Enforcement
Agency (DEA) coordinates with local, state, and federal agents to reduce illicit drug use. The DEA
enacted the Controlled Substances Act (CSA) in 1970 to regulate drugs and other substances
based on their potential for abuse and dependency. Five schedules of controlled substances
were created that are updated annually. Classes of scheduled substances include narcotics,
depressants, stimulants, hallucinogens, and anabolic steroids. The DEA issues eligible providers
with a registration number to write prescriptions for controlled substances. Characteristics of a
valid DEA number include:
-The first letter identifies the type of provider: A=before 1985; B=after 1985; F=after 2007;
M=nurse practitioner or physician assistant
-The 2nd letter the 1st letter of the provider's last name at the time of initial registration
Example: Tammy Greene applies for and receives a DEA number of MG2705208
M=nurse practitioner and G=Greene
Opioid Epidemic & Responsible Prescribing - ANS
Opioid Use Disorder - ANS a pattern of use that leads to significant impairment or distress.
Typically, this disorder is marked by unsuccessful efforts to reduce or control use resulting in the
inability to fulfill work, school, or home responsibilities. Opioid use disorder is different from
drug tolerance and physical dependence, which may also exist. Opioid use creates high levels of
positive reinforcement, increasing the likelihood of continued use. It is often a chronic lifelong
disorder, leading to serious consequences such as disability and death. Although it is similar to
other substance use disorders, it has distinct features that have fueled the current opioid
epidemic. Opioids can lead to physical dependence in only 4-8 weeks. Abruptly stopping use in
4
@2026 EDITION ALLRIGHTS RESERVED
