Name
Purdue University Globle
NU553 Advanced Pharmacology and Pharmacotherapeutics
Prof. Name
Date
The NU553 midterm typically emphasizes safe prescribing, pharmacology, medication safety, disease-specific treatment, antimicrobial therapy, psychiatric medications, pain management, respiratory and cardiovascular conditions, and prescribing considerations for children, pregnant patients, and older adults. To prepare effectively, nursing and advanced practice nursing students should understand not only which medication is used for a condition, but also why it is selected, how it works, what adverse effects to monitor, and when treatment should be modified.
This NU553 midterm study guide brings these concepts together in an organized format covering pharmacokinetics, pharmacogenomics, antibiotics, psychiatric medications, dermatology, allergies, infectious diseases, anticoagulation, respiratory disorders, cardiovascular pharmacology, and evidence-based prescribing.
Safe medication management begins with an accurate diagnosis and a complete patient assessment. Before prescribing, clinicians should consider the patient’s age, allergies, current medications, kidney and liver function, pregnancy or breastfeeding status, genetic factors, comorbidities, and potential drug interactions.
A medication that is appropriate for one patient may be unsafe for another. Therefore, prescribing should be individualized rather than based solely on the diagnosis.
Several principles are particularly important for NU553 exam preparation:
Establish the diagnosis before selecting pharmacologic treatment.
Review allergies, current medications, comorbidities, and potential interactions.
Calculate pediatric medication doses using the child’s weight in kilograms when weight-based dosing is indicated.
Include all required information when writing a prescription.
Educate patients about appropriate medication storage and disposal.
Encourage the use of authorized medication take-back programs for unused or expired medications.
Schedule II controlled substances have strict prescribing requirements, including no refills under federal U.S. controlled-substance regulations.
Consider fetal and neonatal risks when prescribing during pregnancy or breastfeeding.
Medication safety also requires appropriate follow-up. Prescribers should determine whether the medication is producing the intended therapeutic effect and monitor for adverse reactions.
Pharmacokinetics describes what the body does to a drug. The four major processes are absorption, distribution, metabolism, and excretion.
The route of administration can substantially affect drug availability. Intravenous medications enter systemic circulation directly and therefore have essentially 100% bioavailability.
Drug distribution can change with age and disease. For example, changes in body composition, plasma proteins, edema, and organ function can affect how medications distribute throughout the body. These changes are particularly important when treating older adults.
Plasma protein binding is another clinically important concept. When two highly protein-bound medications compete for binding sites, the amount of unbound medication may increase. Because the unbound fraction is generally pharmacologically active, this interaction can potentially increase adverse effects or toxicity.
Receptor activity helps explain how many medications produce their effects.
An agonist binds to a receptor and activates it, producing a biological response. An antagonist, by contrast, binds to a receptor and prevents or reduces activation by an agonist.
Understanding receptor activity can help students predict therapeutic effects, adverse reactions, and drug interactions.
Pharmacogenomics examines how genetic variation affects a person’s response to medications. Genetic differences can influence drug metabolism, therapeutic effectiveness, and the risk of adverse effects.
Warfarin is a commonly discussed example because genetic variation involving enzymes such as CYP2C9 can influence warfarin metabolism and dosing requirements. Other genetic factors, including VKORC1 variation, can also affect warfarin response.
Pharmacogenomic information can be particularly useful when a patient’s response to a medication is unexpectedly poor or excessive despite appropriate adherence and dosing.
Appropriate antimicrobial prescribing requires determining whether an infection is actually present and, whenever possible, identifying the responsible organism.
Culture and susceptibility testing can help clinicians select targeted therapy, particularly when resistant organisms are suspected or when the infection is severe.
Important antimicrobial concepts include:
Antibiotics should be used when bacterial infection is suspected or confirmed rather than for viral illnesses that do not respond to antibiotics.
Culture and susceptibility testing can guide antibiotic selection.
Therapy should be adjusted when laboratory results demonstrate resistance or identify a more appropriate medication.
Oral vancomycin is used for certain cases of Clostridioides difficile infection because the medication achieves high concentrations within the gastrointestinal tract.
Isoniazid and some other tuberculosis medications can cause peripheral neuropathy; pyridoxine (vitamin B6) supplementation may be prescribed for patients at increased risk.
Tetracyclines can increase photosensitivity, so patients should receive appropriate sun-protection counseling.
Medication administration instructions should be followed carefully to optimize tolerability and effectiveness.
Antimicrobial stewardship is important because unnecessary or inappropriate antibiotic exposure contributes to antimicrobial resistance.
Older adults have an increased risk of medication-related harm because they may have multiple chronic conditions, take several medications, and experience age-related changes in pharmacokinetics and pharmacodynamics.
Common contributors to polypharmacy include:
Multiple prescribers
Multiple chronic diseases
Duplicate therapies
Drug-drug interactions
Prescribing cascades, in which another medication is used to treat an adverse effect caused by an existing medication
Use of unnecessary or outdated medications
A therapeutic interchange occurs when an alternative medication with comparable therapeutic effectiveness is substituted for another medication under an approved process, such as a formulary or institutional policy.
Medication reconciliation is an important strategy for identifying discrepancies and reducing preventable medication errors.
Psychiatric medication selection should be based on the patient’s diagnosis, symptoms, age, comorbidities, previous treatment response, adverse-effect profile, drug interactions, and preferences.
Several antidepressants may be used for different clinical situations. Their selection should be individualized rather than based on a single symptom.
| Medication | Common Clinical Considerations |
|---|---|
| Fluoxetine | Major depressive disorder in children and adolescents; other depressive and anxiety disorders |
| Sertraline | Depression and anxiety disorders; commonly used when a well-established SSRI is appropriate |
| Escitalopram | Major depressive disorder and generalized anxiety disorder |
| Venlafaxine | Depression and anxiety disorders; may also reduce vasomotor symptoms in some patients |
| Duloxetine | Depression, generalized anxiety disorder, diabetic peripheral neuropathic pain, and chronic musculoskeletal pain |
| Bupropion | Depression and smoking cessation; generally has less sexual dysfunction than many SSRIs |
| Paroxetine | Depression and anxiety disorders; may cause sexual adverse effects and has additional considerations during pregnancy |
SSRIs are commonly considered first-line pharmacologic treatment for many depressive and anxiety disorders.
Fluoxetine has strong evidence for treating depression in children and adolescents and is one of the SSRIs commonly recommended for this population.
Duloxetine can affect mood and should be used carefully in patients with bipolar disorder because antidepressant therapy may contribute to mood switching.
St. John’s wort can interact with numerous medications because it affects drug-metabolizing enzymes and transporters. Patients should discuss herbal products with their healthcare provider before using them with prescription medications.
Older adults and residents of long-term care facilities should be assessed for depression because depressive symptoms may be overlooked or attributed to aging or chronic illness.
ADHD treatment is individualized according to age, symptoms, functional impairment, comorbidities, and treatment response.
Stimulant medications such as methylphenidate are commonly used as first-line pharmacologic treatment for ADHD in children and adolescents. Bupropion may be considered in selected adults when clinically appropriate, particularly when other treatment considerations make it useful.
Restless legs syndrome may be treated pharmacologically depending on the underlying cause and severity. Current management emphasizes assessment for iron deficiency and appropriate correction of low iron stores when present. Dopaminergic medications such as pramipexole have historically been used but require consideration of adverse effects and the potential for symptom augmentation.
Effective pain management begins with identifying the type and cause of pain.
Acetaminophen is commonly used for mild to moderate pain when there are no contraindications. Duloxetine may be useful for certain chronic musculoskeletal and neuropathic pain conditions.
Pain mechanisms can be described as nociceptive, neuropathic, or mixed. For example, inflammatory or tissue-injury pain is often nociceptive, whereas pain associated with diabetic peripheral neuropathy is neuropathic.
Long-term opioid therapy requires careful monitoring. Constipation is a common opioid adverse effect, so patients receiving chronic opioid therapy should receive appropriate preventive and management strategies.
Patients with hypertension, heart failure, chronic kidney disease, or peptic ulcer disease require careful assessment before NSAIDs are prescribed because NSAIDs can increase cardiovascular, renal, and gastrointestinal risks.
Many dermatologic conditions have characteristic findings that help clinicians establish a diagnosis and select treatment.
| Condition | Common Treatment Consideration |
|---|---|
| Atopic dermatitis | Moisturizers and topical corticosteroids such as low-potency hydrocortisone for appropriate mild disease |
| Contact dermatitis | Allergen or irritant avoidance and topical corticosteroids when indicated |
| Intertrigo | Keep affected areas dry; antifungal therapy such as nystatin may be used when candidal infection is present |
| Acne | Topical therapies first; oral antibiotics may be considered for selected moderate-to-severe inflammatory acne |
| Rosacea | Topical or oral therapy depending on manifestations and severity |
| Impetigo | Topical antibiotics for limited disease; systemic therapy may be required for more extensive infection |
Clinical presentation varies by age, skin type, severity, and underlying condition, so treatment should follow the established diagnosis rather than appearance alone.
Isotretinoin is a highly effective medication for severe or treatment-resistant acne but carries significant teratogenic risk. In the United States, prescribing and dispensing requirements include participation in the iPLEDGE REMS program.
Patients using isotretinoin require careful counseling regarding pregnancy prevention, laboratory monitoring when indicated, adverse effects, and medication interactions.
Topical tretinoin can cause dryness and irritation, particularly when treatment is initiated. Gradually increasing frequency of application and using appropriate moisturization can improve tolerability.
Treatment of eye and ear infections depends on the underlying cause.
Bacterial conjunctivitis may be treated with an appropriate topical ophthalmic antibiotic when antibiotic treatment is indicated. Otitis externa is generally treated with topical ear preparations rather than routine systemic antibiotics.
For acute otitis media, amoxicillin remains an important first-line antibiotic when bacterial infection warrants treatment and there are no contraindications. Alternative antibiotics may be selected when allergy or other clinical factors are present.
Before initiating certain biologic immunosuppressive therapies, clinicians should evaluate patients for latent infections, particularly tuberculosis.
For medications such as infliximab, screening may include a tuberculosis risk assessment and testing with an interferon-gamma release assay or tuberculin skin test, depending on the clinical situation.
Because biologic therapies can suppress immune responses, patients should also be monitored for serious and opportunistic infections during treatment.
Good glycemic control is another important strategy for reducing complications associated with diabetes, including infection and impaired wound healing.
Allergy management begins with identifying and avoiding the responsible allergen whenever possible.
Anaphylaxis is a Type I hypersensitivity reaction and is a medical emergency. Intramuscular epinephrine is the first-line treatment for anaphylaxis.
Second-generation antihistamines such as cetirizine and fexofenadine are commonly used for allergic rhinitis and urticaria because they generally cause less sedation than first-generation antihistamines.
Pseudoephedrine should be used cautiously and is contraindicated with certain medications, including monoamine oxidase inhibitors, because of the potential for significant cardiovascular effects.
For persistent allergic rhinitis, intranasal corticosteroids are generally among the most effective therapies.
Nutritional deficiencies are important causes of anemia.
Vitamin B12 deficiency associated with pernicious anemia can be treated with vitamin B12 replacement, including cyanocobalamin.
Folate is particularly important during pregnancy because adequate folate intake reduces the risk of neural tube defects.
Iron-deficiency anemia requires appropriate iron replacement and evaluation for the underlying cause. Routine multivitamin use alone is generally insufficient to treat established iron deficiency.
HIV prevention and treatment require an understanding of transmission, antiretroviral therapy, and medication adherence.
Sexual exposure is a major route of HIV transmission. Pre-exposure prophylaxis (PrEP) can substantially reduce the risk of acquiring HIV when taken as prescribed and combined with appropriate monitoring.
Antiretroviral medications can produce metabolic and other adverse effects. Some older protease inhibitor regimens have been associated with lipodystrophy and changes in fat distribution.
Treatment decisions should follow current HIV treatment guidelines because recommended drug combinations and monitoring strategies continue to evolve.
The immune system recognizes transplanted tissue as foreign, creating a risk of rejection.
Human leukocyte antigen (HLA) compatibility is one factor considered when evaluating transplant compatibility, although transplant outcomes depend on multiple immunologic and clinical factors.
Cyclosporine is an immunosuppressant associated with several adverse effects, including gingival hyperplasia. Patients should maintain excellent oral hygiene and receive appropriate dental care.
Warfarin has a narrow therapeutic range and requires regular international normalized ratio (INR) monitoring.
An elevated INR indicates excessive anticoagulation and increases bleeding risk. Management depends on the INR level, whether bleeding is present, the indication for anticoagulation, and other patient-specific factors. Simply withholding a dose is not appropriate for every elevated INR.
D-dimer testing can help rule out venous thromboembolism in selected patients with a sufficiently low pretest probability. It is not intended to independently diagnose pulmonary embolism.
The Pulmonary Embolism Rule-out Criteria (PERC) can help clinicians determine whether additional PE testing is necessary in carefully selected low-risk patients.
Direct oral anticoagulants are generally not recommended for patients with mechanical heart valves; warfarin remains the standard oral anticoagulant for these patients.
Respiratory pharmacology focuses on treating infection, controlling airway inflammation, relieving bronchoconstriction, and preventing exacerbations.
Acute bacterial rhinosinusitis should be distinguished from viral upper respiratory infections before antibiotics are prescribed.
When antibiotic treatment is indicated for acute bacterial sinusitis, amoxicillin-clavulanate is a commonly recommended first-line option in adults.
Community-acquired pneumonia may present with cough, fever, dyspnea, tachycardia, fatigue, pleuritic chest discomfort, and abnormal lung findings. Chest imaging may demonstrate pulmonary infiltrates.
Patients with significant comorbidities, recent antibiotic exposure, or risk factors for resistant organisms may require a different antimicrobial strategy.
Asthma is characterized by chronic airway inflammation and variable airflow limitation. Modern treatment emphasizes inhaled corticosteroid-containing therapy to reduce exacerbations and improve control.
Key concepts include:
Inhaled corticosteroids are central to long-term asthma management.
ICS-formoterol is an important preferred strategy for many patients under contemporary asthma guidelines.
Montelukast is a leukotriene receptor antagonist and may be useful in selected patients.
Systemic corticosteroids such as prednisone may be used for moderate or severe exacerbations when clinically indicated.
Asthma control should be reassessed regularly rather than relying only on rescue medication use.
The primary goals of COPD treatment are to reduce symptoms, improve functional status, and prevent exacerbations.
Smoking cessation is one of the most important interventions for patients who smoke because it can slow disease progression.
Long-acting bronchodilators, including long-acting beta-agonists and long-acting muscarinic antagonists, are important maintenance therapies. Treatment should be individualized according to symptoms, exacerbation history, and other clinical factors.
Vaccination, including annual influenza vaccination when appropriate, is also an important component of preventive respiratory care.
Several respiratory and antimicrobial medications require specific safety considerations.
Fluoroquinolone antibiotics carry important warnings, including risks involving tendons, nerves, and other serious adverse effects. They should therefore be reserved for situations in which their benefits outweigh their risks.
Oseltamivir is most effective when started promptly after influenza symptoms begin, although treatment may still be appropriate later in certain high-risk or severely ill patients.
Azithromycin can prolong the QT interval and should be used cautiously in patients with risk factors for QT prolongation or serious arrhythmias.
Cardiovascular prescribing requires attention to evidence-based guidelines, contraindications, drug interactions, renal function, electrolytes, and patient-specific risk factors.
Common antihypertensive medication classes include ACE inhibitors, angiotensin II receptor blockers, calcium channel blockers, thiazide-type diuretics, beta blockers, and other agents.
| Medication/Class | Important Clinical Point |
|---|---|
| ACE inhibitors | Useful in several cardiovascular and renal conditions but contraindicated during pregnancy |
| ARBs | Alternative for patients who cannot tolerate ACE inhibitors in appropriate clinical situations |
| Calcium channel blockers | Effective antihypertensive agents; treatment response varies among individuals |
| Beta blockers | Particularly useful for selected cardiovascular indications rather than as universal first-line therapy for uncomplicated hypertension |
| Hydralazine | Direct arterial vasodilator used in selected clinical situations |
| Chlorthalidone | Long-acting thiazide-like diuretic commonly used for hypertension |
ACE inhibitors and ARBs should generally be avoided in pregnancy because of fetal toxicity. They also require careful consideration in patients with renal artery stenosis.
For hypertension during pregnancy, medications such as labetalol, nifedipine, and methyldopa may be used depending on the clinical situation. Hydralazine is also used in certain acute hypertensive settings.
Heart failure treatment depends on the type of heart failure and ejection fraction.
For heart failure with reduced ejection fraction (HFrEF), guideline-directed medical therapy can include angiotensin receptor-neprilysin inhibitors, ACE inhibitors or ARBs when appropriate, evidence-based beta blockers, mineralocorticoid receptor antagonists, and SGLT2 inhibitors.
Digoxin may be considered in selected patients but does not replace guideline-directed foundational therapy.
Spironolactone can improve outcomes in appropriate patients with HFrEF but requires monitoring of potassium and kidney function. It should be avoided or used very cautiously when significant hyperkalemia or renal dysfunction is present.
Statins are a cornerstone of pharmacologic treatment for elevated LDL cholesterol and cardiovascular risk reduction.
Statins inhibit 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, an enzyme involved in cholesterol synthesis.
High-intensity statins such as atorvastatin 40–80 mg and rosuvastatin 20–40 mg can generally lower LDL cholesterol by at least 50% in patients who respond appropriately.
Patients should be monitored for clinically significant adverse effects, medication interactions, and liver-related concerns when clinically indicated.
HDL cholesterol participates in reverse cholesterol transport, helping move cholesterol from peripheral tissues toward the liver.
Patients presenting with symptoms suggestive of acute coronary syndrome require rapid assessment. An ECG should be obtained promptly when acute coronary syndrome is suspected.
Patients taking warfarin who present with neurologic symptoms concerning for stroke require careful assessment, including INR measurement when relevant to determining treatment eligibility.
Heart failure, severe anemia, stimulant or cocaine exposure, alcohol misuse, electrolyte abnormalities, and certain medications can increase the risk of cardiac arrhythmias.
For stable supraventricular tachycardia (SVT), vagal maneuvers may be attempted as an initial intervention in appropriate patients. If the rhythm persists, medication such as adenosine may be considered according to the clinical situation and established protocols.
Advanced practice nurses must combine pharmacologic knowledge with patient assessment and current clinical guidelines. Safe prescribing is not simply choosing a medication from a list; it involves determining whether treatment is necessary, selecting an appropriate therapy, monitoring its effectiveness, and responding to adverse effects.
A practical prescribing process includes:
Confirm the diagnosis.
Assess the patient’s individual risk factors.
Review allergies and current medications.
Evaluate kidney and liver function when relevant.
Consider pregnancy, breastfeeding, age, and genetic factors.
Select evidence-based therapy.
Educate the patient about administration, adverse effects, and adherence.
Establish appropriate monitoring and follow-up.
Reassess treatment effectiveness and safety.
Lifestyle interventions remain important alongside medication therapy. Depending on the condition, these may include smoking cessation, nutrition changes, physical activity, weight management, vaccination, sleep improvement, and other risk-reduction strategies.
For efficient NU553 midterm preparation, focus on understanding the clinical reasoning behind the medication rather than memorizing isolated drug names.
Students should be able to explain:
Why accurate diagnosis is necessary before prescribing.
How absorption, distribution, metabolism, and elimination influence drug therapy.
Why older adults have greater risks associated with polypharmacy.
How pharmacogenomics can influence medication response.
Why antibiotic selection should consider culture and susceptibility results.
Which antidepressants are commonly used for depression and anxiety.
How pain type influences medication selection.
Why isotretinoin requires strict pregnancy-prevention precautions.
How biologic therapies affect infection risk.
Why INR monitoring is necessary with warfarin.
How D-dimer and PERC are used in selected patients being evaluated for thromboembolism.
Why inhaled corticosteroid-containing therapy is central to asthma management.
Why smoking cessation is essential in COPD.
Which antihypertensive medications require special consideration during pregnancy.
How guideline-directed therapy is used in heart failure.
How statins reduce LDL cholesterol.
Why rapid ECG assessment is important when acute coronary syndrome is suspected.
The most important NU553 midterm topics include safe prescribing, pharmacokinetics, pharmacogenomics, antimicrobial therapy, psychiatric pharmacology, pain management, dermatology, allergies, anticoagulation, respiratory medications, hypertension, heart failure, lipid management, and medication considerations for special populations.
The first step is establishing an accurate diagnosis. The clinician should then assess patient-specific factors before selecting and prescribing medication.
Culture and susceptibility testing can identify the organism responsible for an infection and help determine which antibiotics are likely to be effective. This supports targeted treatment and antimicrobial stewardship.
Fluoxetine is one of the SSRIs with strong evidence and regulatory support for depression in children and adolescents. Treatment should be accompanied by appropriate monitoring and follow-up.
ACE inhibitors can cause serious fetal and neonatal complications, including impaired fetal kidney development and oligohydramnios. They should therefore be avoided during pregnancy.
Warfarin has a narrow therapeutic range, and its anticoagulant effect can vary because of diet, medications, illness, and other factors. INR monitoring helps determine whether anticoagulation is within the intended therapeutic range.
Asthma treatment should include inhaled corticosteroid-containing therapy for most patients who require long-term controller treatment. Current guideline recommendations also emphasize appropriate use of ICS-formoterol in many patients.
Smoking cessation reduces continued exposure to tobacco smoke and can slow the progression of COPD. It is one of the most important interventions for patients with COPD who smoke.
Pharmacogenomics helps clinicians understand how inherited genetic differences may influence medication metabolism, effectiveness, and adverse-effect risk. It can support more individualized treatment in selected clinical situations.
Successful NU553 midterm preparation requires more than memorizing medication names. Focus on connecting the disease, medication mechanism, expected therapeutic effect, adverse effects, contraindications, monitoring requirements, and patient-specific considerations.
When reviewing each medication, ask five questions: What is it used for? How does it work? What should the patient avoid? What adverse effects require monitoring? What findings would indicate that treatment needs to be changed?
Using this approach can make pharmacology concepts easier to retain and can strengthen the clinical reasoning skills expected in advanced nursing practice. Students should also compare their course materials with current clinical guidelines because medication recommendations, dosing practices, and treatment standards can change over time.
American College of Cardiology & American Heart Association. (2017). 2017 ACC/AHA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults. https://www.ahajournals.org/doi/10.1161/HYP.0000000000000065
American College of Cardiology & American Heart Association. (2022). 2022 AHA/ACC/HFSA guideline for the management of heart failure. https://www.ahajournals.org/doi/10.1161/CIR.0000000000001063
Centers for Disease Control and Prevention. (2024). Antibiotic prescribing and use. https://www.cdc.gov/antibiotic-use/
Centers for Disease Control and Prevention. (2025). Adult immunization schedule by age. https://www.cdc.gov/vaccines/schedules/
Global Initiative for Asthma. (2025). Global strategy for asthma management and prevention. https://ginasthma.org/
Global Initiative for Chronic Obstructive Lung Disease. (2025). Global strategy for the prevention, diagnosis and management of COPD. https://goldcopd.org/
National Heart, Lung, and Blood Institute. (2020). 2020 focused updates to the asthma management guidelines. https://www.nhlbi.nih.gov/resources/2020-focused-updates-asthma-management-guidelines
National Institute of Mental Health. (2024). Depression. https://www.nimh.nih.gov/health/topics/depression
U.S. Food and Drug Administration. (2025). Isotretinoin and the iPLEDGE REMS. https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/ipledge-risk-evaluation-and-mitigation-strategy-rems
U.S. Preventive Services Task Force. (2024). Recommendations. https://www.uspreventiveservicestaskforce.org/uspstf/recommendation-topics
Woo, T. M., & Robinson, M. V. (2024). Pharmacotherapeutics for advanced practice nurse prescribers (6th ed.). F. A. Davis.
