Pharmacology Practice Test 45
Pharmacology NCLEX Practice Test
Pharmacology is a key topic within the NCLEX test plan, located under Nursing Science → Clinical Foundations → Pharmacology. This section details drug mechanisms, safe administration, and patient education across nursing specialties. Each test contains 50 questions designed to mirror the difficulty and variety of the real exam.
This is the 45th part of the Pharmacology series. To explore all practice tests under this topic, use the “Back to Main Topic” button at the end of the page.
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Pharmacology Practice Test 45
A 65-year-old male with a history of chronic heart failure presents with acute worsening of dyspnea, orthopnea, and bilateral lower extremity edema. On examination, he has jugular venous distension and crackles in both lung fields. Which intravenous medication would be most appropriate for rapid symptom relief in this patient?
- Digoxin
- Furosemide
- Carvedilol
- Spironolactone
Explanation: Answer reason: This presentation is acute decompensated heart failure with pulmonary congestion (crackles, orthopnea) and volume overload (JVD, edema). IV loop diuretics act quickly to reduce intravascular volume and preload, improving pulmonary edema and dyspnea within hours. Digoxin is not used for rapid relief of congestion, beta-blockers like carvedilol are generally avoided/held in acute decompensation, and spironolactone is beneficial chronically but is not a rapid IV decongestant. Category reason: This question tests which medication provides rapid symptomatic relief in acute decompensated heart failure, focusing on drug class selection and onset of action, which is primarily Pharmacology.
In cardiac arrest, which is the first drug used during CPR?
- Adrenaline
- Atropine
- Dopamine
- Calcium gluconate
Explanation: Answer reason: In adult cardiac arrest algorithms, epinephrine is the primary vasoactive medication given during CPR to increase coronary and cerebral perfusion pressure via alpha-adrenergic vasoconstriction. It is indicated for both shockable and non-shockable rhythms, administered at regular intervals during ongoing compressions. Atropine is no longer recommended routinely for asystole/PEA, dopamine is used for symptomatic bradycardia or shock states rather than arrest, and calcium gluconate is reserved for specific causes (e.g., hyperkalemia, hypocalcemia, calcium-channel blocker overdose). Category reason: This question tests knowledge of the standard medication used in resuscitation pharmacotherapy rather than nursing prioritization or bedside care decisions, aligning best with Pharmacology.
Salbutamol inhaler is used for?
- Fever
- Asthma
- Allergy
- Diarrhea
Explanation: Answer reason: Salbutamol (albuterol) is a short-acting beta-2 adrenergic agonist that relaxes bronchial smooth muscle to rapidly relieve bronchospasm. It is commonly used as a rescue inhaler for acute asthma symptoms and for prevention of exercise-induced bronchoconstriction. The other choices are not primary indications for an inhaled SABA, which targets reversible airway obstruction rather than systemic fever, allergic mechanisms directly, or gastrointestinal motility. Category reason: This item tests the indication and mechanism-related use of a specific medication (salbutamol), which is core Pharmacology knowledge rather than a nursing prioritization/intervention scenario.
Which of the following is NOT an anesthetic agent?
- Propofol
- Nitrous oxide
- Ether
- Paracetamol
Explanation: Answer reason: Paracetamol is an analgesic and antipyretic used for pain and fever control, but it does not produce anesthesia (loss of sensation and/or consciousness required for procedures). Propofol is a commonly used intravenous general anesthetic for induction and sedation. Nitrous oxide is an inhalational anesthetic/analgesic gas used for procedural sedation and anesthesia. Ether is a historical inhalational general anesthetic agent. Category reason: This item tests identification of drug classes and their clinical uses (anesthetic agents vs analgesic/antipyretic), which is core Pharmacology content rather than nursing-care decision making.
Acyclovir is a drug used for infection caused by?
- Protozoal
- Virus
- Fungus
- Bacteria
Explanation: Answer reason: Acyclovir is an antiviral medication that is selectively activated by viral thymidine kinase and then inhibits viral DNA polymerase, limiting viral DNA replication. It is primarily used for herpesviruses such as HSV-1, HSV-2, and varicella-zoster virus. It has no clinical role in treating bacterial, fungal, or protozoal infections because its mechanism targets viral DNA synthesis pathways. Category reason: This item tests knowledge of a specific medication’s antimicrobial class and target organism (antiviral activity), which is core Pharmacology rather than nursing care prioritization or safety interventions.
An 80-year-old with osteoporosis is prescribed calcium supplements. Which instruction is essential?
- Take with vitamin D for better absorption
- Crush the tablet if swallowing is difficult
- Avoid dairy products while on this medication
- Consume with a high-fiber meal
Explanation: Answer reason: Vitamin D is required to enhance intestinal calcium absorption, so co-administration supports achieving therapeutic goals in osteoporosis. Without adequate vitamin D, oral calcium may have limited benefit even if the dose is sufficient. Avoiding dairy is unnecessary because dietary calcium is generally beneficial, and high-fiber meals can reduce mineral absorption. Crushing may be inappropriate for some formulations (e.g., extended-release), making it unsafe to recommend as a blanket instruction. Category reason: This question tests medication/nutrient administration principles and factors affecting absorption of a supplement, which fits Pharmacology rather than nursing prioritization or safety actions.
Which of the following corticosteroids has the highest anti-inflammatory potency?
- Hydrocortisone
- Prednisone
- Methylprednisolone
- Dexamethasone
Explanation: Answer reason: Glucocorticoids differ in anti-inflammatory potency and mineralocorticoid activity; dexamethasone is a long-acting agent with very high glucocorticoid potency and negligible mineralocorticoid effect. By comparison, hydrocortisone is the least potent, and prednisone/methylprednisolone are intermediate potency. On standard equivalence tables, ~0.75 mg of dexamethasone provides an effect similar to ~5 mg of prednisone or ~20 mg of hydrocortisone, indicating the greatest anti-inflammatory potency among the listed options. Category reason: This tests comparative drug potency and pharmacologic equivalence among corticosteroids, which is a Pharmacology concept rather than a nursing intervention or prioritization task.
Which of the following drug classes is most appropriate for relieving stomach cramps caused by gastrointestinal smooth muscle spasms?
- Proton pump inhibitors
- Antispasmodics (e.g., hyoscine butylbromide)
- H2 receptor antagonists
- Laxatives
- Antacids
Explanation: Answer reason: These agents relax gastrointestinal smooth muscle (commonly via anticholinergic effects), directly reducing spasms that cause crampy abdominal pain. Proton pump inhibitors, H2 blockers, and antacids primarily reduce gastric acidity and are more useful for dyspepsia/ulcer-related pain rather than spasm-driven cramps. Laxatives treat constipation and can sometimes worsen cramping, so they are not the best targeted therapy for smooth muscle spasm. Category reason: This item tests drug class selection and mechanism-based symptom relief for GI smooth muscle spasm, which is a pharmacology-focused concept rather than a nursing care/priority decision.
A client diagnosed with pneumonia is prescribed antibiotics. The nurse understands that the primary purpose of administering antibiotics is to...?
- Reduce fever
- Provide symptomatic relief
- Kill or inhibit bacterial growth
- Increase oxygen saturation
Explanation: Answer reason: Antibiotics are used to eliminate bacteria or prevent their replication, treating the underlying infectious cause of bacterial pneumonia. Decreasing fever and improving comfort can occur as secondary effects once the infection is controlled, but they are not the primary pharmacologic purpose. Oxygen saturation is improved through resolving infection and supportive oxygen therapy, not directly by antibiotics. Category reason: This question tests the fundamental mechanism and therapeutic purpose of antibiotics, which is a core Pharmacology concept rather than a nursing-prioritization or intervention judgment item.
The clinic nurse is performing an admission assessment on a client. The nurse notes that the client is taking azelaic acid (Azelex). Because of the medication prescription, the nurse would suspect that the client is being treated for?
- Acne
- Eczema
- Hair loss
- Herpes simplex
Explanation: Answer reason: Azelaic acid is a topical medication commonly used to treat acne vulgaris due to its antimicrobial activity against Cutibacterium acnes and its comedolytic/keratolytic effects that reduce follicular plugging. It can also help decrease inflammatory lesions and post-inflammatory hyperpigmentation. The other options are treated with different medication classes (e.g., topical corticosteroids for eczema, antivirals for herpes simplex, and agents like minoxidil/finasteride for hair loss). Category reason: This question tests recognition of a medication (azelaic acid) and its clinical indication, which is primarily pharmacology knowledge rather than a nursing intervention or prioritization task.
Which enzyme is responsible for converting codeine to morphine in the liver?
- CYP2D6
- CYP3A4
- MAO
- COMT
Explanation: Answer reason: Codeine is a prodrug that requires hepatic O-demethylation to form its active metabolite responsible for most analgesic effect. This biotransformation is primarily mediated by the cytochrome P450 isoenzyme CYP2D6; genetic polymorphisms can therefore lead to poor analgesia (poor metabolizers) or toxicity (ultrarapid metabolizers). CYP3A4 mainly converts codeine to norcodeine (less active), while MAO and COMT are involved in monoamine metabolism rather than opioid activation. Category reason: This question tests drug metabolism and specific CYP450 enzyme involvement in converting a prodrug to its active metabolite, which is a core Pharmacology concept.
What is a common side effect of furosemide?
- Hyperkalemia
- Hypokalemia
- Hypertension
- Hyperglycemia
Explanation: Answer reason: Furosemide is a loop diuretic that increases sodium and water excretion in the thick ascending limb and, by increasing distal sodium delivery, promotes potassium loss in the urine. This commonly leads to low serum potassium, which can cause weakness, cramps, and dysrhythmias. Monitoring electrolytes and considering potassium supplementation or dietary intake are standard safety measures with loop diuretics. Category reason: This question tests drug effects and adverse effects of a specific medication (a loop diuretic), which is core Pharmacology knowledge rather than nursing prioritization or an intervention scenario.
Criteria for choosing an effective drug for a disorder include:
- Asking the patient what drug they think would work best for them
- Consulting nationally recognized guidelines for disease management
- Prescribing medications that are available as samples before writing a prescription
- Following U.S. Drug Enforcement Administration guidelines for prescribing
Explanation: Answer reason: Evidence-based clinical practice guidelines synthesize the best available research and expert consensus to recommend first-line therapy, dosing, monitoring, and escalation strategies. This approach improves effectiveness and safety by aligning drug selection with proven outcomes and standardized care pathways. Patient preference is important but does not determine efficacy, and choosing drugs based on samples introduces bias. DEA rules address controlled-substance legality rather than determining the most effective therapy for a given disorder. Category reason: This question tests principles of evidence-based medication selection and appropriate prescribing practices, which fit Pharmacology rather than nursing care prioritization or interventions.
What is a common side effect of lisinopril?
- Hyperkalemia
- Hypoglycemia
- Hypertension
- Bradycardia
Explanation: Answer reason: ACE inhibitors decrease angiotensin II and aldosterone secretion, which reduces renal potassium excretion. This can lead to elevated serum potassium, especially in patients with renal impairment or those taking potassium supplements or potassium-sparing diuretics. Monitoring potassium and renal function is a standard safety practice when starting or adjusting this medication. Category reason: This question tests knowledge of a drug’s adverse effect profile, which is a core Pharmacology concept rather than a nursing judgment/prioritization scenario.
A pharmaceutical company has developed a new drug that was tested only on adults. The FDA has reduced this drug’s potential benefits for children. According to the Research Equity Act (PREA), what may the pharmaceutical company be required to do?
- Conduct pediatric drug studies to determine whether the drug is safe and effective for children
- Provide labeling stating that the safety and efficacy of the drug is not established for children.
- Receive a patent extension for conducting pediatric studies to determine use in children.
- Survey existing data about the drug to determine potential use in the pediatric population.
Explanation: Answer reason: PREA authorizes the FDA to require pediatric assessments for certain drugs/biologics when adult indications may be relevant to pediatric patients, addressing the gap when a product was only studied in adults. This means the sponsor may need to perform pediatric trials or studies to support pediatric labeling regarding dosing, safety, and efficacy. The patent extension incentive is associated with BPCA (Best Pharmaceuticals for Children Act), which is distinct from PREA’s requirement framework. Merely adding a “not established” label or surveying existing data does not fulfill the mandated pediatric assessment when PREA applies. Category reason: This item tests knowledge of U.S. drug regulation and pediatric study requirements related to medication approval/labeling, which is primarily pharmacology and regulatory pharmacology content rather than bedside nursing decision-making.
The primary care pediatric nurse practitioner is considering use of a relatively new drug for a 15-month-old child. The drug is metabolized by the liver, so the nurse practitioner will consult a pharmacologist to discuss giving the drug?
- Less often or at a lower dose.
- More often or at a higher dose.
- Via a parenteral route.
- Via the oral route.
Explanation: Answer reason: Infants and young toddlers have immature hepatic enzyme activity and reduced metabolic clearance compared with older children and adults. For a medication primarily metabolized by the liver, this increases the risk of drug accumulation and toxicity at standard doses. Safer initial prescribing is typically a reduced dose and/or extended dosing interval with close monitoring for efficacy and adverse effects. Route changes do not reliably compensate for decreased hepatic metabolism and may introduce other risks. Category reason: This question tests age-related drug metabolism and dosing adjustments for hepatically metabolized medications, which is a core Pharmacology concept rather than a nursing care prioritization/intervention scenario.
Criteria for choosing an effective drug for a disorder include:
- Asking the patient what drug they think would work best for them
- Consulting nationally recognized guidelines for disease management
- Prescribing medications that are available at samples (before writing a prescription)
- Following U.S. Drug Enforcement Administration regulations
Explanation: Answer reason: Evidence-based clinical guidelines synthesize trial data and expert consensus to recommend first-line therapies, dosing, monitoring, and escalation based on effectiveness and safety. Patient preference is important but does not determine efficacy and must be balanced with contraindications and outcomes data. Using free samples can bias prescribing and does not ensure the most appropriate medication choice for the condition. DEA regulations govern controlled substances and legal prescribing, but they are not a primary criterion for selecting the most effective therapy for a given disorder. Category reason: The question tests principles of selecting drug therapy using evidence-based standards, which is a core Pharmacology concept rather than a nursing judgment/prioritization scenario.
A 78 Yr old man with nausea and vomiting for 1 week. Has parkinsons, on oral co-tranadol so and oral ( can't remember). Co-caredol dose was increased 10 days ago. Treatment?
- Cinnarizine
- Cyclizine
- Ondansetron
- Metrochlopramide
- Prochlorperazine
Explanation: Answer reason: In Parkinson disease, dopamine antagonists can worsen parkinsonism and precipitate significant extrapyramidal symptoms. Metoclopramide and prochlorperazine are dopamine D2 blockers and should generally be avoided. Cyclizine is an H1 antihistamine antiemetic without dopamine blockade, making it a safer first-line choice for symptomatic nausea/vomiting in a patient with Parkinson disease, including when symptoms may be medication-related. Category reason: This question tests selection of an appropriate antiemetic based on mechanism and contraindications in Parkinson disease, which is primarily a pharmacology/medication-safety concept rather than a nursing care prioritization scenario.
A patient with TB is started on isoniazid. Which lab value needs close monitoring?
- Hemoglobin
- Liver function tests
- Creatinine
- Electrolytes
Explanation: Answer reason: Isoniazid is hepatotoxic and can cause asymptomatic transaminase elevations or clinical hepatitis, with risk increased by age, alcohol use, and preexisting liver disease. Monitoring AST/ALT (and bilirubin if indicated) helps detect evolving liver injury early so the drug can be held and evaluated. Hemoglobin, creatinine, and electrolytes are not the primary labs for routine toxicity surveillance with isoniazid. Category reason: This is a medication-safety knowledge question focused on a specific drug’s adverse effect profile and required laboratory monitoring, which falls under Pharmacology rather than nursing prioritization or care management.
Salicylic acid is prescribed for a client with a diagnosis of psoriasis. The nurse monitors the client, knowing that which of the following would indicate the presence of systemic toxicity from this medication?
- Tinnitus
- Diarrhea
- Constipation
- Decreased respirations
Explanation: Answer reason: Systemic absorption of salicylic acid (especially with large-area topical use or impaired skin barrier as in psoriasis) can cause salicylism. Early toxicity classically presents with tinnitus due to salicylate effects on the cochlea and central auditory pathways. GI upset can occur but is less specific, while constipation is not typical. Respiratory depression is more consistent with severe late toxicity; earlier salicylate effects tend to stimulate ventilation causing tachypnea/respiratory alkalosis. Category reason: This item tests recognition of adverse effects and systemic toxicity of a medication (salicylic acid), which is primarily Pharmacology knowledge rather than a nursing care prioritization scenario.
The nurse is caring for a client who is receiving long-term glucocorticoid therapy. The nurse should encourage the client to select a diet that is high in?
- Calcium
- Magnesium
- Thiamine (vitamin B1)
- Vitamin K
Explanation: Answer reason: Long-term glucocorticoids decrease intestinal absorption of calcium and increase bone resorption, accelerating osteoporosis risk. Increasing dietary intake helps mitigate steroid-induced bone loss alongside other preventive measures (e.g., vitamin D and weight-bearing activity when appropriate). The other listed vitamins/minerals are not the primary dietary focus for preventing this common adverse effect of chronic glucocorticoid therapy. Category reason: This item tests knowledge of adverse effects of long-term glucocorticoids and appropriate nutritional supplementation, which is primarily pharmacology-focused rather than a nursing-prioritization/safety scenario.
A nurse is providing teaching to a newly licensed nurse about metoclopramide. The nurse should include in the teaching that which of the followingconditions is a contraindication to this medication?
- Hyperthyroidism
- Intestinal obstruction
- Glaucoma
- Low blood pressure
Explanation: Answer reason: Metoclopramide is a prokinetic and antiemetic that increases gastrointestinal motility. In a mechanical bowel obstruction, stimulating peristalsis can worsen cramping, distention, and raise the risk of complications such as perforation. Therefore, it is contraindicated when an intestinal obstruction is present. The other listed conditions are not the classic absolute contraindications compared with obstruction. Category reason: This question tests knowledge of a medication’s contraindications and mechanism-related safety, which is primarily pharmacology rather than a nursing process or prioritization decision.
A nurse is administering subQ epinephrine for a client who is experiencing anaphylaxis. The nurse should monitor the client for which of the following adverse effects?
- Hypotension
- Hypertonia
- Hypoglycemia
- Tachycardia
Explanation: Answer reason: D. Tachycardia Epinephrine is an adrenergic agonist that stimulates beta-1 receptors in the heart, increasing heart rate and contractility. This can lead to palpitations and tachyarrhythmias, so monitoring vital signs and cardiac response is important. Hypotension is treated by epinephrine via vasoconstriction (alpha-1) and improved cardiac output, not expected as an adverse effect. Epinephrine more commonly raises blood glucose through glycogenolysis, so hypoglycemia is not typical. Category reason: This question tests knowledge of epinephrine’s mechanism of action and expected adverse effects, which is core medication science content within Pharmacology rather than a nursing prioritization or care-management decision.
A nurse is reviewing the lab results for a client who has prescription for filgrastim. The nurse should recognize that an increase in which of the following values indicates a therapeutic effect of this medication?
- Erythrocyte count
- Neutrophil count
- Lymphocyte count
- Thrombocyte count
Explanation: Answer reason: Filgrastim is a granulocyte colony-stimulating factor (G-CSF) that stimulates the bone marrow to produce and mature neutrophils. It is used to prevent or treat neutropenia (e.g., after chemotherapy) and reduce infection risk. Therefore, a rising absolute neutrophil count is the expected therapeutic response. It does not primarily increase red blood cells, platelets, or lymphocytes. Category reason: This question tests the mechanism and therapeutic lab effect of a medication (filgrastim), which is primarily Pharmacology rather than nursing prioritization or interventions.
A 23-year-old woman is admitted to the infusion clinic after a Multiple Sclerosis Exacerbation. The physician orders methylprednisolone infusions (Solu-Medrol). The nurse would expect which of the following outcomes after administration of this medication?
- A decrease in muscle spasticity and involuntary movements
- A slowed progression of Multiple Sclerosis related plaques
- A decrease in the length of the exacerbation
- A stabilization of mood and sleep
Explanation: Answer reason: High-dose IV corticosteroids are used in acute MS relapses to reduce CNS inflammation and hasten recovery, leading to a shorter relapse duration. They do not alter the long-term disease course or prevent new plaque formation; disease-modifying therapies address that goal. While steroids can affect mood and sleep, they more commonly cause insomnia and mood changes rather than stabilizing them. Reduced spasticity may occur indirectly as relapse symptoms improve, but the primary expected outcome is shortening the exacerbation. Category reason: This question tests the expected therapeutic effect of an administered medication (IV methylprednisolone) in MS relapse, which is primarily pharmacology-focused rather than a nursing-prioritization/intervention scenario.
Which IV fluid is used for rapid fluid replacement?
- Dextrose 5%
- 0.9% NaCl
- 0.45% NaCl
- Dextrose 10%
Explanation: Answer reason: It is an isotonic crystalloid that stays primarily in the extracellular compartment, so it expands intravascular volume effectively for rapid resuscitation. Hypotonic saline (0.45% NaCl) shifts water into cells and is not appropriate for rapid volume replacement. Dextrose solutions (5% or 10%) provide free water and/or calories and do not reliably restore circulating volume for acute hypovolemia; D5W becomes effectively hypotonic after metabolism. Category reason: This tests foundational knowledge of IV fluid tonicity and indications for volume resuscitation, which is primarily pharmacology/IV fluid therapy rather than a nursing-prioritization scenario.
Which route bypasses first-pass metabolism?
- Oral
- Rectal
- Sublingual
Explanation: Answer reason: Sublingual administration allows drug absorption through the oral mucosa directly into systemic venous circulation, avoiding portal blood flow to the liver. This prevents hepatic first-pass metabolism and typically produces a faster onset than swallowing a medication. By contrast, oral drugs are absorbed from the GI tract into the portal system and undergo significant first-pass effect. Rectal absorption can partially bypass first-pass depending on where in the rectum the drug is absorbed, so it is not as reliably bypassing as sublingual. Category reason: This tests how different medication administration routes affect absorption and hepatic first-pass metabolism, which is a core Pharmacology concept.
Which syringe is used for insulin?
- 1 ml
- 2 ml
- 5 ml
- 10 ml
Explanation: Answer reason: a) 1 ml Insulin is administered in very small, precisely measured doses, so a low-volume syringe with fine unit markings is required for accurate dosing. Standard insulin syringes are commonly 1 mL and calibrated in insulin units (e.g., U-100), which improves dose precision and reduces medication error risk. Larger syringes (2–10 mL) are not designed for unit-based insulin measurement and increase the chance of inaccurate dosing. Category reason: This question tests knowledge of the appropriate device used to administer a medication (insulin) and safe dosing accuracy principles, which fits Pharmacology-focused foundational nursing knowledge rather than a patient-care prioritization scenario.
The following drugs cross the placental barrier to the fetus EXCEPT
- Warfarin
- Heparin
- Digoxin
- Aspirin
Explanation: Answer reason: Heparin is a large, highly charged molecule and therefore does not cross the placenta in clinically significant amounts. In contrast, warfarin readily crosses and is teratogenic (e.g., fetal bleeding and warfarin embryopathy). Aspirin and digoxin can cross the placenta to varying degrees due to their physicochemical properties and maternal-fetal gradients. Thus, the exception is the agent that does not cross the placental barrier. Category reason: This tests drug properties and placental transfer (which medications cross the placenta), a foundational pharmacology concept rather than a nursing-intervention decision.
The nurse is teaching a patient how a medication works to treat an illness. To do this, the nurse will rely on knowledge of?
- Clinical pharmacology.
- Drug efficacy.
- Pharmacokinetics.
- Pharmacotherapeutics.
Explanation: Answer reason: It focuses on the use of medications to prevent and treat disease, including what the drug does therapeutically and why it is used for a specific condition. Teaching “how a medication works to treat an illness” aligns with the clinical purpose and intended therapeutic effects of the drug. In contrast, pharmacokinetics addresses absorption, distribution, metabolism, and excretion, and efficacy is a measure of maximal effect rather than the broader therapeutic application. Category reason: This question tests foundational medication knowledge—specifically the therapeutic use of drugs in treating illness—so it fits Pharmacology rather than a nursing-prioritization or intervention decision.
What does it mean when a drug is described as easy to administer?
- It can be stored indefinitely without need for refrigeration.
- It does not interact significantly with other medications.
- It enhances patient adherence to the drug regimen.
- It is usually relatively inexpensive to produce.
Explanation: Answer reason: Ease of administration refers to how simple a medication is for a patient to take correctly (e.g., convenient dosing schedule, easy route/formulation), which reduces barriers and improves compliance. Better adherence increases the likelihood the patient receives the intended therapeutic exposure and outcomes. Storage requirements, drug–drug interactions, and manufacturing cost are separate properties that do not define administration ease. Category reason: This item tests a foundational medication concept—how drug formulation/route and regimen convenience relate to adherence—placing it in Pharmacology rather than a nursing care prioritization scenario.
A patient tells the nurse that he was told by the prescriber that the analgesic he is taking is very effective. Which statement by the patient demonstrates an understanding of the drug’s effectiveness?
- “I don’t have to worry about toxicity, since it takes a large amount of this drug to cause an overdose.”
- “It has no side effects and doesn’t interact with other drugs.”
- “I only have to take it every 12 hours.”
- “It might make me sleepy, and it lessens pain for several hours at a time.”
Explanation: Answer reason: Effectiveness refers to whether a medication achieves its intended therapeutic effect for a clinically meaningful duration. Reporting pain relief lasting for several hours reflects the drug’s analgesic action and duration, while acknowledging sleepiness shows awareness of a common adverse effect rather than an unrealistic expectation of no side effects. The other statements confuse effectiveness with safety margin, absence of interactions, or dosing interval alone, none of which directly demonstrate that the medication is relieving pain. Category reason: This item tests understanding of medication therapeutic effects versus adverse effects and misconceptions about drug safety, which is core Pharmacology knowledge rather than a nursing-priority or intervention scenario.
Antianxiety medications should be used with extreme caution because long term use can lead to ________.?
- Parkinsonian like syndrome
- Hepatic failure
- Hypertensive crisis
- Risk of addiction
Explanation: Answer reason: D. Risk of addiction Long-term use of many anxiolytics—especially benzodiazepines—can cause tolerance and physiologic dependence, with withdrawal symptoms if stopped abruptly. This dependence increases the likelihood of misuse and substance use disorder, which is why these agents are recommended for short-term or intermittent use when possible. The other options are not the classic primary long-term risk associated with anxiolytics in general (e.g., hypertensive crisis is more associated with MAOI interactions). Category reason: This item tests adverse outcomes and risks of anxiolytic drug therapy, which is primarily pharmacology knowledge rather than a nursing care prioritization scenario.
Which drug is contraindicated during pregnancy.?
- Iron
- Paracetamol
- Tetracycline
- Folic acid
Explanation: Answer reason: It crosses the placenta and can deposit in fetal bones and teeth, causing permanent tooth discoloration and impaired bone growth. It is also associated with maternal hepatotoxicity risk (especially later in pregnancy). By contrast, iron and folic acid are commonly indicated in pregnancy, and paracetamol is generally considered safe at recommended doses. Category reason: This question tests knowledge of medication safety/contraindications in pregnancy, which is a pharmacology concept rather than a nursing intervention or prioritization scenario.
An opioid adverse reaction is?
- Wheezes and shallow breathing, sleepiness
- Slow and shallow breathing, sleepiness
- Rapid and shallow breathing, sleepiness
- All of the above
Explanation: Answer reason: Opioids depress the central nervous system and the brainstem respiratory centers, leading to decreased respiratory rate and tidal volume. Sedation/somnolence commonly accompanies this respiratory depression and is an important early warning sign of toxicity. Wheezing is not a typical opioid adverse effect (bronchospasm is uncommon), and rapid breathing is not characteristic of opioid-induced respiratory depression. Therefore, the option describing slow, shallow respirations with sleepiness best matches the classic adverse reaction profile. Category reason: This item tests knowledge of the expected adverse effects of opioid medications (respiratory depression and sedation), which is a core Pharmacology concept rather than a nursing action/prioritization scenario.
Which of the following analgesics would not be administered to a patient after closure of perforated duodenal ulcer?
- Paracetamol
- Pethidine
- Suppository diclofenac
- Tramadol
Explanation: Answer reason: NSAIDs inhibit prostaglandin synthesis, reducing gastric mucosal protection and increasing the risk of GI bleeding and ulcer recurrence, which is particularly unsafe after repair of a perforated duodenal ulcer. Postoperatively, analgesics that do not increase ulceration/bleeding risk are preferred, such as acetaminophen or opioids. Rectal administration does not eliminate systemic NSAID effects on the stomach and platelet function. Therefore an NSAID is avoided in this setting. Category reason: This question tests medication selection based on drug class effects (NSAID-related gastrointestinal toxicity and bleeding risk), which is primarily a Pharmacology concept rather than a nursing-process intervention scenario.
Normal saline contains
- 5% dextrose with
- 0.9% NaCl
- 1% Nacl
- 3% Nacl
Explanation: Answer reason: Normal saline is defined as an isotonic crystalloid solution containing 0.9 g sodium chloride per 100 mL of water (9 g/L). This concentration approximates plasma tonicity, so it generally stays within the extracellular space without causing significant shifts of water into or out of cells. The other concentrations listed represent either dextrose-containing fluids or hypertonic saline preparations used for specific indications. Category reason: This item tests foundational knowledge of standard IV fluid composition and concentration, which is primarily pharmacology-related content rather than a nursing judgment or intervention scenario.
A patient is prescribed sucralfate (Carafate) and asks the nurse what the purpose of taking this medication is. Which is the nurse’s best response?
- The medication helps reduce bacterial levels in the stomach
- The medication helps neutralize gastric acid in the stomach
- The medication is used to protect the gastrointestinal mucosa
- The medication can reduce the patient’s constipation
Explanation: Answer reason: Sucralfate acts locally by forming a viscous, protective barrier that adheres to ulcerated mucosa, shielding it from acid, pepsin, and bile salts to promote healing. It is not an antacid and does not significantly neutralize gastric acid; instead it protects the lining. It also has no antibacterial purpose and is not used to treat constipation. Category reason: This question tests the mechanism and therapeutic purpose of a specific medication (sucralfate), which is a core Pharmacology concept rather than a nursing prioritization or care-management decision.
The nurse is creating a class for older adults in the community. Which information about laxative use in older adults would be important to include?
- Laxative are not effective in older adults
- All laxative are exactly the same
- Over-the-counter laxatives are misused
- Laxatives can cause potassium retention
Explanation: Answer reason: Some laxatives (notably stimulant and osmotic agents) can significantly alter electrolyte balance in older adults due to fluid shifts and increased stool output. Electrolyte disturbances are clinically important in this population because they can precipitate weakness, arrhythmias, and worsen comorbid cardiac/renal disease. Teaching should emphasize avoiding routine or prolonged laxative use and monitoring for symptoms of electrolyte imbalance when laxatives are needed. Category reason: This item tests knowledge of medication effects and adverse electrolyte consequences of laxatives in older adults, which is primarily pharmacology-focused rather than a nursing-priority scenario.
Which among the following is not a short acting benzodiazepine?
- Lorazepam
- Diazepam
- Oxazepam
- Alprax
Explanation: Answer reason: Diazepam is a long-acting benzodiazepine due to its active metabolites (e.g., desmethyldiazepam) and prolonged half-life, leading to extended sedative effects. In contrast, lorazepam and oxazepam are generally considered intermediate/shorter-acting agents without long-lived active metabolites and are often preferred when less accumulation is desired. Alprax refers to alprazolam, which is typically shorter acting compared with diazepam. Therefore, diazepam is the best choice for an agent that is not short acting. Category reason: This question tests comparative duration of action of benzodiazepines, a core pharmacology concept involving drug kinetics and classification rather than a nursing-care decision.
Antidote for organophosphate poisoning is?
- Naloxone
- Atropine
- Protamine
- Flumazenil
Explanation: Answer reason: Organophosphates inhibit acetylcholinesterase, causing excess acetylcholine and a cholinergic toxidrome (e.g., bronchorrhea/bronchospasm, bradycardia, miosis, salivation, lacrimation). The immediate life-threatening effects are muscarinic, and atropine competitively blocks muscarinic receptors to dry secretions and improve airway/breathing and hemodynamics. While pralidoxime is also used to regenerate acetylcholinesterase (especially for nicotinic symptoms), it is not among the listed options, making atropine the best answer here. Category reason: This question tests knowledge of a specific antidote and mechanism in toxicology/pharmacology rather than a nursing care decision, so it fits Pharmacology.
Antidote for heparin is?
- Vitamin K
- Protamine sulfate
- Atropine
- Naloxone
Explanation: Answer reason: Heparin is a negatively charged anticoagulant that enhances antithrombin activity, and protamine is a positively charged compound that binds heparin to form an inactive complex. This rapidly reverses heparin’s anticoagulant effect and is used for significant bleeding or urgent reversal (e.g., after cardiac surgery). Vitamin K reverses warfarin, naloxone reverses opioids, and atropine treats symptomatic bradycardia and some poisonings, so they do not counteract heparin. Category reason: This question tests knowledge of drug antidotes and reversal agents, which is a core topic in pharmacology rather than nursing decision-making in a clinical scenario.
Common side effect of chemotherapy is?
- Hypertension
- Constipation
- Hair loss
- Weight gain
Explanation: Answer reason: Chemotherapy targets rapidly dividing cells, and hair follicle matrix cells divide quickly, making them especially susceptible to cytotoxic effects. This commonly leads to anagen effluvium (alopecia) that can begin days to weeks after treatment starts and is often reversible after therapy ends. Constipation can occur with some regimens and with antiemetics/opioids, but it is not as classically universal as alopecia across many chemotherapeutic agents. Hypertension and weight gain are not typical general side effects of chemotherapy itself. Category reason: This question tests a typical adverse effect of cytotoxic drug therapy, which is primarily pharmacology knowledge rather than nursing prioritization or interventions.
The first choice of drug for treating MI
- Myocardial infarction
- Dexilofine Sodium
- Codeine Sulphate
- Morphine Sulphate
Explanation: Answer reason: C) Morphine Sulphate In acute myocardial infarction, opioid analgesia is used to rapidly relieve severe chest pain, reduce anxiety, and decrease sympathetic stimulation that can increase myocardial oxygen demand. Morphine also provides venodilation, which can reduce preload and potentially lessen cardiac workload. Codeine is an inadequate analgesic for severe ischemic chest pain and is not used as first-line MI pain control. Dexilofine sodium is not a standard or recommended first-choice agent in MI management compared with established acute coronary syndrome protocols. Category reason: This item tests medication selection for a disease condition (MI), focusing on drug choice and its clinical effects, which is best classified under Pharmacology rather than nursing process or care prioritization.
What is the route of administration of Rota vaccine?
- IM
- Subcutaneous
- Intradermal
- Oral
Explanation: Answer reason: Rotavirus vaccines are live attenuated vaccines formulated for delivery into the gastrointestinal tract to induce mucosal immunity. They are administered by mouth as drops, not by injection, because parenteral routes would not provide the intended local immune response in the gut. Injectable routes (IM, SC, ID) are therefore incorrect for this vaccine. Category reason: This tests vaccine administration route, which is a medication/immunization knowledge point within Pharmacology rather than a nursing judgment or prioritization scenario.
Oral contraceptives pills can have?
- Oestrogen and Progesterone.
- Oestrogen only.
- Progesterone only.
- None of the Above.
Explanation: Answer reason: Combined oral contraceptive pills classically contain an estrogen component (most often ethinyl estradiol) plus a progestin. This combination suppresses ovulation and also thickens cervical mucus and alters the endometrium to reduce the likelihood of fertilization and implantation. While progestin-only pills exist, the single best general description of oral contraceptive pills is the combined formulation. Category reason: This question tests drug composition of hormonal contraceptives, which is pharmacology-focused rather than a nursing care decision.
Drug of choice for anaphylactic shock is?
- Atropine
- Dopamine
- Adrenaline (Epinephrine)
- Hydrocortisone
Explanation: Answer reason: It is the first-line medication for anaphylaxis because it rapidly reverses airway edema and bronchospasm via beta-2 effects and supports blood pressure via alpha-1–mediated vasoconstriction. This addresses the life-threatening hypotension and respiratory compromise that define anaphylactic shock. Other agents like corticosteroids are adjuncts with delayed onset and do not provide immediate reversal of airway and circulatory collapse. Category reason: This question tests identification of the first-line medication for a specific emergency condition, focusing on drug selection and pharmacologic effects, which fits Pharmacology.
Which antibiotic is the drug of choice for treating plague?
- Ceftriaxone
- Doxycycline
- Chloramphenicol
- Streptomycin
Explanation: Answer reason: Plague is caused by Yersinia pestis, and aminoglycosides have strong activity against this organism in severe disease. Streptomycin has historically been the preferred first-line agent, with gentamicin commonly used as an effective alternative where streptomycin is unavailable. Doxycycline can be used for treatment in some cases and is commonly used for prophylaxis, but it is not the classic drug of choice for severe plague. Ceftriaxone and chloramphenicol are not considered first-line therapy for typical plague presentations. Category reason: This question tests knowledge of the most appropriate antibiotic for a specific infectious disease, which is primarily pharmacologic (drug of choice/antimicrobial selection) rather than a nursing care action or prioritization scenario.
A client is started on a beta-blocker. Which condition would require the nurse to question the prescription?
- Heart failure
- Angina
- Asthma
- Hypertension
Explanation: Answer reason: Beta-blockers can block beta-2 receptors in bronchial smooth muscle, causing bronchoconstriction and potentially triggering an asthma exacerbation. This risk is greatest with nonselective agents (e.g., propranolol), but even cardioselective beta-1 blockers may worsen reactive airway disease at higher doses. In contrast, beta-blockers are commonly indicated (with appropriate selection and monitoring) for hypertension and angina, and certain agents improve outcomes in stable chronic heart failure. Category reason: This question tests medication contraindications and adverse physiologic effects of beta-blockers, which is core Pharmacology content rather than nursing prioritization or care planning.
Which finding in a patient taking digoxin is most concerning?
- Pulse 76 bpm
- Potassium 2.8 mEq/L
- Nausea after eating
- BP 132/84 mmHg
Explanation: Answer reason: B. Potassium 2.8 mEq/L Hypokalemia increases digoxin binding to the Na+/K+ ATPase, which raises the risk of digoxin toxicity and dangerous dysrhythmias. A potassium of 2.8 mEq/L is significantly low and requires prompt correction and evaluation of digoxin effect. Nausea can be an early sign of toxicity but is less immediately predictive of life-threatening arrhythmia than marked hypokalemia. The listed pulse and blood pressure are within acceptable ranges and are not as concerning in this context. Category reason: This question primarily tests medication-related risk factors and adverse-effect mechanisms (hypokalemia potentiating digoxin toxicity), which is core Pharmacology knowledge rather than a nursing-priority/action scenario.
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