Nclexrn Quiz: Adverse Effects And Drug Interactions

What this quiz covers

This quiz focuses on Adverse Effects And Drug Interactions, giving you a quick way to practice the rules, question types, and explanations that matter most for Nclexrn.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

Question 1

1. Swelling of lips and tongue after starting enalapril (correct answer)
2. Mild dizziness when standing quickly
3. Dry cough that occurs occasionally at night
4. Blood pressure of 138/84 mmHg at home

Explanation: This question tests understanding of adverse effects and drug interactions, particularly angioedema from ACE inhibitors. The key findings are swelling of lips and tongue with difficulty swallowing shortly after starting enalapril, indicating angioedema. Immediate intervention is required to prevent airway obstruction. Dizziness, dry cough, and slightly elevated BP are common and less urgent. Assessment of airway patency is vital. The nursing process prioritizes emergency response. A transferable strategy is to monitor for angioedema in the first weeks of ACE inhibitor therapy.

Question 2

1. Instruct the client to avoid taking nitroglycerin and notify the provider due to risk of severe hypotension (correct answer)
2. Teach the client to take nitroglycerin and then drive to the pharmacy to pick up aspirin
3. Recommend taking sildenafil daily to prevent chest pain
4. Advise the client to increase fluid intake and continue both medications as prescribed

Explanation: This question tests understanding of adverse effects and drug interactions. The key assessment findings include the client's recent use of sildenafil, prescription for nitroglycerin, low blood pressure of 96/58 mmHg, heart rate of 92/min, and dizziness upon standing, indicating potential orthostatic hypotension. The correct answer, option A, is the best choice because sildenafil and nitroglycerin both cause vasodilation, which can lead to severe hypotension, prioritizing client safety by instructing avoidance of nitroglycerin and notifying the provider for alternative management. Option B is incorrect as administering nitroglycerin could worsen hypotension and driving to the pharmacy is unsafe given the client's symptoms; option C is wrong because sildenafil is not indicated for preventing chest pain and daily use is inappropriate; option D is less optimal as continuing both medications ignores the dangerous interaction, and increasing fluids does not address the root cause of the risk. In the nursing process, this involves thorough assessment of medication history and vital signs to identify interactions, followed by immediate intervention to prevent adverse events. Decision-making in medication safety requires prioritizing actions that mitigate life-threatening risks like severe hypotension. A transferable strategy for managing medication-related issues is to routinely educate clients on potential drug interactions and encourage them to report all medications to healthcare providers before starting new prescriptions.

Question 3

1. Propranolol therapy in a client with COPD using albuterol (correct answer)
2. Inhaled albuterol used as needed
3. Inhaled corticosteroid used daily
4. Normal saline nasal spray used for dryness

Explanation: This question tests understanding of adverse effects and drug interactions, focusing on beta-blockers antagonizing beta-agonists in COPD. The key symptoms are increased shortness of breath and wheezing unrelieved by albuterol in a client on propranolol, due to bronchoconstriction. Questioning propranolol in a COPD client using albuterol is appropriate as nonselective beta-blockers worsen symptoms. Albuterol, corticosteroids, and saline are standard. Assessment of respiratory response is essential. The nursing process emphasizes evaluating therapy efficacy. A transferable strategy is to use cardioselective beta-blockers in respiratory conditions.

Question 4

1. Notify the provider that oxybutynin may worsen cognition and counteract donepezil (correct answer)
2. Increase the donepezil dose to overcome the urinary medication effects
3. Limit oral fluids to decrease urinary frequency
4. Administer an over-the-counter sleep aid at bedtime for agitation

Explanation: This question tests understanding of adverse effects and drug interactions, specifically anticholinergic effects counteracting cholinesterase inhibitors. The key findings are increased confusion, dry mouth, and constipation in a client on donepezil and oxybutynin, indicating antagonism. Notifying the provider that oxybutynin may worsen cognition and counteract donepezil is priority for safety and symptom management. Increasing donepezil risks side effects; limiting fluids worsens constipation; sleep aids add anticholinergics. Assessment of cognitive changes is key. The decision-making principle is to avoid opposing mechanisms. A transferable strategy is to review anticholinergic burden in dementia clients.

Question 5

1. Teach the client to use a backup nonhormonal contraceptive method while taking rifampin (correct answer)
2. Reassure the client that rifampin increases contraceptive effectiveness
3. Instruct the client to stop rifampin immediately
4. Recommend doubling the oral contraceptive dose without consulting the provider

Explanation: This question tests understanding of adverse effects and drug interactions, particularly reduced contraceptive efficacy from enzyme inducers. The key concern is breakthrough bleeding and pregnancy risk in a client on oral contraceptives and rifampin, due to induced metabolism. Teaching to use backup contraception is priority to prevent unintended pregnancy safely. Reassuring increased effectiveness is incorrect; stopping rifampin risks TB; doubling dose is unsafe without orders. Assessment involves recognizing interaction effects. The decision-making principle is client education on risks. A transferable strategy is to counsel on alternative contraception with inducers.

Question 6

1. Administer the scheduled digoxin dose to improve cardiac output
2. Hold digoxin and notify the provider of possible digoxin toxicity related to hypokalemia (correct answer)
3. Encourage the client to restrict fluids to 1 liter per day
4. Administer an antacid for nausea and reassess in 1 hour

Explanation: This question tests understanding of adverse effects and drug interactions, particularly digoxin toxicity exacerbated by hypokalemia from diuretics. The key findings are nausea, visual halos, bradycardia, and low potassium in a client on digoxin and furosemide, signaling toxicity. Holding digoxin and notifying the provider is priority to prevent arrhythmias and address hypokalemia safely. Administering digoxin worsens toxicity; restricting fluids is inappropriate; antacids don't address the cause. Assessment of electrolyte and cardiac status is vital. The decision-making principle is to withhold drugs in toxicity signs. A transferable strategy is to monitor potassium levels when using digoxin with loop diuretics.

Question 7

1. Encourage the client to ambulate with assistance to improve alertness
2. Hold further sedating medications and support ventilation while notifying the provider/rapid response team (correct answer)
3. Offer a snack and recheck blood glucose in 30 minutes
4. Administer the next scheduled dose of lorazepam to prevent withdrawal

Explanation: This question tests understanding of adverse effects and drug interactions, particularly respiratory depression from opioid-benzodiazepine combinations. The key findings are difficulty arousing, slurred speech, bradypnea, and low SpO2 in a client on oxycodone and lorazepam, suggesting sedation overdose. Holding sedating medications, supporting ventilation, and notifying the provider or rapid response team is priority to prevent respiratory arrest. Ambulating may increase fall risk; offering a snack addresses hypoglycemia not indicated; administering more lorazepam worsens sedation. Assessment of respiratory status is crucial in polypharmacy. The decision-making principle is to prioritize reversal of life-threatening effects. A transferable strategy is to monitor sedation levels when combining CNS depressants.

Question 8

1. Administer oral diphenhydramine when the client is able to swallow
2. Document the reaction in the allergy section of the medical record after the next set of vital signs
3. Obtain a sputum culture before any additional interventions
4. Stop the antibiotic infusion and administer intramuscular epinephrine per protocol (correct answer)

Explanation: This question tests understanding of adverse effects and drug interactions, specifically anaphylaxis from beta-lactam antibiotics in allergic clients. The key findings are wheezing, facial swelling, hives, and hypotension shortly after piperacillin-tazobactam in a client with penicillin allergy, indicating anaphylaxis. Stopping the infusion and administering epinephrine is immediate to reverse airway compromise and shock, prioritizing client safety. Documenting after vital signs delays care; obtaining sputum is irrelevant; diphenhydramine is adjunctive but not first-line. The nursing process requires rapid assessment and intervention in allergic reactions. Prioritizing airway and circulation is key in emergencies. A transferable strategy is to always verify allergies before administering antibiotics.

Question 9

1. Reassess vital signs in 4 hours to see if symptoms resolve
2. Give the next scheduled metoprolol dose to stabilize the heart rhythm
3. Encourage the client to drink caffeinated beverages to raise heart rate
4. Hold further doses and notify the provider of symptomatic bradycardia and hypotension (correct answer)

Explanation: This question tests understanding of adverse effects and drug interactions, particularly additive bradycardia and hypotension from beta-blockers and calcium channel blockers. The key findings are lightheadedness, hypotension, and bradycardia in a client on metoprolol and diltiazem, indicating hemodynamic compromise. Holding doses and notifying the provider is priority to prevent syncope or shock. Giving more metoprolol worsens effects; caffeine is inappropriate; reassessing later delays care. Assessment of vital signs is essential. The decision-making principle is to avoid additive AV node suppression. A transferable strategy is to monitor heart rate closely with combined rate controllers.

Question 10

1. Polyethylene glycol taken for constipation
2. Topical mupirocin applied to the wound
3. Acetaminophen taken for discomfort
4. Trimethoprim-sulfamethoxazole added to lisinopril therapy (correct answer)

Explanation: This question tests understanding of adverse effects and drug interactions, focusing on hyperkalemia from ACE inhibitors and certain antibiotics. The key finding is elevated potassium with weakness in a client on lisinopril and trimethoprim-sulfamethoxazole, especially with kidney disease. Questioning trimethoprim-sulfamethoxazole added to lisinopril is appropriate as this combination risks hyperkalemia. Mupirocin, acetaminophen, and polyethylene glycol are safe. Assessment of electrolytes in renal clients is essential. The nursing process prioritizes lab monitoring. A transferable strategy is to choose alternative antibiotics in hyperkalemia risk.

Question 11

1. Azathioprine prescribed while the client is taking allopurinol (correct answer)
2. Calcium citrate supplement
3. Docusate sodium for constipation prevention
4. Topical hydrocortisone cream for itching

Explanation: This question tests understanding of adverse effects and drug interactions, specifically bone marrow suppression from azathioprine potentiated by allopurinol. The key findings are fever, sore throat, and low WBC in a client on allopurinol and azathioprine, indicating myelosuppression. Questioning azathioprine with allopurinol is appropriate as this interaction increases toxicity risk. Calcium, docusate, and hydrocortisone are safe. Assessment of blood counts is vital in immunosuppression. The nursing process prioritizes infection signs. A transferable strategy is to dose-adjust immunosuppressants with xanthine oxidase inhibitors.

Question 12

1. Administer the next dose of lithium to prevent relapse of mania
2. Provide a high-protein snack to reduce nausea
3. Encourage the client to restrict sodium intake to reduce blood pressure
4. Hold lithium and notify the provider of suspected thiazide-related lithium toxicity (correct answer)

Explanation: This question tests understanding of adverse effects and drug interactions, focusing on lithium toxicity from sodium depletion by thiazides. The key findings are coarse tremor, vomiting, unsteady gait, and elevated lithium level in a client on lithium and hydrochlorothiazide, indicating toxicity. Holding lithium and notifying the provider is priority to prevent severe neurotoxicity and ensure safety. Administering lithium worsens toxicity; restricting sodium exacerbates it; a snack doesn't address the cause. Assessment of lithium levels and symptoms is crucial. The decision-making principle is to withhold in toxicity. A transferable strategy is to monitor levels when adding diuretics to lithium therapy.

Question 13

1. Occasional cough with deep breathing exercises
2. Increased urine output after diuretic therapy
3. Mild thirst after fluid restriction
4. Tinnitus and decreased hearing (correct answer)

Explanation: This question tests understanding of adverse effects and drug interactions, specifically ototoxicity from aminoglycosides potentiated by loop diuretics. The key symptoms are tinnitus and decreased hearing in a client on gentamicin and furosemide, indicating auditory damage. This indicates an adverse effect requiring intervention to prevent permanent hearing loss. Increased urine output is expected; mild thirst from restriction; cough from exercises are benign. Assessment of sensory changes is vital. The decision-making principle is to monitor for toxicity in combinations. A transferable strategy is to baseline and serial audiometry with ototoxic drugs.

Question 14

1. Administer the next theophylline dose with food to reduce nausea
2. Hold theophylline and notify the provider of suspected elevated theophylline level (correct answer)
3. Encourage the client to ambulate to reduce anxiety and improve sleep
4. Give a PRN antacid and reassess symptoms in 30 minutes

Explanation: This question tests understanding of adverse effects and drug interactions affecting theophylline metabolism. The client shows theophylline toxicity symptoms (nausea, insomnia, tachycardia, PVCs) after starting ciprofloxacin, which inhibits cytochrome P450 enzymes that metabolize theophylline, increasing serum levels. Holding theophylline and notifying the provider (B) is the priority because theophylline has a narrow therapeutic index and toxicity can progress to seizures and life-threatening arrhythmias. Administering with food (A) doesn't address the dangerous interaction, encouraging ambulation (C) is unsafe with cardiac arrhythmias, and giving antacids (D) delays critical intervention for toxicity. The nursing priority is recognizing drug interactions that affect medications with narrow therapeutic ranges and intervening before serious complications develop. When fluoroquinolones are prescribed with theophylline, dose reduction is typically required, and nurses must monitor for CNS and cardiac toxicity signs.

Question 15

1. Administer vitamin K as prescribed and prepare to transfuse fresh frozen plasma
2. Hold warfarin and notify the provider about the elevated INR and bleeding (correct answer)
3. Give the antibiotic with food to reduce gastrointestinal irritation
4. Teach the client to increase intake of vitamin K-rich foods while on antibiotics

Explanation: This question tests understanding of adverse effects and drug interactions between warfarin and antibiotics. The client has an INR of 5.6 (therapeutic range for atrial fibrillation is 2-3) with active bleeding symptoms after starting trimethoprim-sulfamethoxazole, which inhibits warfarin metabolism and increases anticoagulation. Holding warfarin and notifying the provider (B) is the priority action because the client has supratherapeutic anticoagulation with active bleeding that requires immediate intervention. While vitamin K and fresh frozen plasma (A) may be needed for severe bleeding, the first action is to stop the causative medication and alert the provider; giving the antibiotic with food (C) doesn't address the dangerous interaction, and increasing vitamin K foods (D) is inappropriate during acute bleeding with elevated INR. The nursing process requires assessment and immediate intervention when recognizing drug interactions that cause bleeding complications. Nurses must monitor INR closely when antibiotics are added to warfarin therapy and recognize that many antibiotics potentiate warfarin's effects through various mechanisms.

Question 16

1. Hold further doses and notify the provider of symptomatic bradycardia and hypotension (correct answer)
2. Teach the client to avoid grapefruit juice while taking verapamil
3. Reassure the client that fatigue is expected after rate-control therapy
4. Encourage oral fluids and recheck blood pressure in 1 hour

Explanation: This question tests understanding of adverse effects and drug interactions causing severe bradycardia and hypotension. The client developed symptomatic bradycardia (HR 38/min) and hypotension (BP 86/50) after receiving verapamil while already taking metoprolol - both drugs have negative chronotropic and inotropic effects that are additive. Holding further doses and notifying the provider (A) is the priority because combining beta-blockers with calcium channel blockers can cause complete heart block, severe hypotension, and cardiovascular collapse requiring immediate intervention. Teaching about grapefruit juice (B) is important but not the immediate priority, reassuring about expected fatigue (C) is inappropriate with dangerous vital signs, and encouraging fluids (D) delays critical intervention for hemodynamic instability. The nursing priority is recognizing that combining cardiac medications with similar mechanisms creates dangerous additive effects requiring immediate action. When rate-controlling agents are combined, continuous cardiac monitoring and frequent vital sign assessment are essential to detect life-threatening bradycardia and hypotension.

Question 17

1. Hold the next dose of tramadol and notify the provider of possible serotonin syndrome (correct answer)
2. Encourage increased oral fluids and reassess bowel sounds in 2 hours
3. Administer the scheduled sertraline dose to prevent withdrawal symptoms
4. Provide a cool compress and recheck temperature at the next medication pass

Explanation: This question tests understanding of adverse effects and drug interactions, specifically serotonin syndrome. The client presents with agitation, diaphoresis, tremor, diarrhea, fever, tachycardia, and hypertension after starting tramadol while taking sertraline - classic signs of serotonin syndrome from the interaction between these serotonergic medications. Holding tramadol and notifying the provider (A) is the best choice because serotonin syndrome can rapidly progress to life-threatening complications including seizures, rhabdomyolysis, and cardiovascular collapse. Encouraging fluids (B) addresses only one symptom without recognizing the dangerous syndrome, administering sertraline (C) would worsen the condition by adding more serotonin, and providing comfort measures (D) delays critical intervention. The nursing priority is recognizing medication interactions that cause serious adverse effects and intervening immediately to prevent progression. When multiple serotonergic drugs are combined, nurses must monitor for autonomic instability, neuromuscular changes, and altered mental status that indicate this medical emergency.

Question 18

1. Schedule the client for a routine international normalized ratio (INR) check at the next weekly lab draw
2. Administer aspirin as ordered for pain to reduce inflammation
3. Encourage increased oral fluids to help flush the urinary tract
4. Hold the next dose of warfarin and notify the provider of suspected increased anticoagulation (correct answer)

Explanation: This question tests understanding of adverse effects and drug interactions, specifically the potentiation of anticoagulants by certain antibiotics. The key assessment findings are new gum bleeding and dark, tarry stools in a client on warfarin recently started on trimethoprim-sulfamethoxazole, indicating possible increased anticoagulation and gastrointestinal bleeding. Holding the next dose of warfarin and notifying the provider is the best choice to ensure client safety by preventing further bleeding and allowing for immediate medical evaluation. Administering aspirin is incorrect as it increases bleeding risk; encouraging fluids addresses the UTI but not the interaction; scheduling a routine INR ignores the urgency of symptoms. In the nursing process, assessment of bleeding signs and prompt intervention are critical for medication safety. Prioritizing notification of the provider facilitates timely adjustment of therapy. A transferable strategy is to always monitor for signs of bleeding in clients on anticoagulants when new medications are added.

Question 19

1. Unsteady gait and nystagmus after starting fluconazole while taking phenytoin (correct answer)
2. White patches on the tongue prior to antifungal therapy
3. Dry mouth after using mouthwash
4. Mild sore throat from coughing

Explanation: This question tests understanding of adverse effects and drug interactions, focusing on phenytoin toxicity from azole antifungals inhibiting metabolism. The key findings are unsteady gait, nystagmus, and slurred speech in a client on phenytoin and fluconazole, signaling toxicity. Immediate intervention is required to prevent seizures or injury from toxicity. White patches are candidiasis; dry mouth from mouthwash; sore throat from coughing are less urgent. Assessment of neurologic status is crucial. The nursing process emphasizes symptom recognition. A transferable strategy is to monitor levels when adding inhibitors to anticonvulsants.

Question 20

1. Teach the client to rise slowly to prevent orthostatic hypotension
2. Encourage intake of potassium-rich foods to prevent muscle cramps
3. Place the client on cardiac monitoring and notify the provider of hyperkalemia (correct answer)
4. Schedule a follow-up blood pressure check in 2 weeks

Explanation: This question tests understanding of adverse effects and drug interactions causing hyperkalemia. The client takes both an ACE inhibitor (lisinopril) and a potassium-sparing diuretic (spironolactone), which together significantly increase hyperkalemia risk, evidenced by potassium 6.2 mEq/L with cardiac symptoms (weakness, palpitations, irregular pulse). Placing on cardiac monitoring and notifying the provider (C) is the priority because hyperkalemia above 6.0 mEq/L can cause fatal arrhythmias including ventricular fibrillation and asystole. Teaching about orthostatic hypotension (A) and encouraging potassium-rich foods (B) are contraindicated with hyperkalemia, while scheduling follow-up (D) delays urgent intervention for a life-threatening electrolyte imbalance. The nursing priority is recognizing that combining potassium-retaining medications creates dangerous hyperkalemia requiring immediate cardiac monitoring and treatment. When multiple medications affect potassium levels, nurses must monitor electrolytes closely and recognize cardiac manifestations that require emergent intervention.