Adverse Effects-Contraindications Practice Test 6
Adverse Effects-Contraindications NCLEX Practice Test
Adverse Effects-Contraindications is a key topic within the NCLEX test plan, located under Physiological Integrity → Pharmacological and Parenteral Therapies → Adverse Effects-Contraindications. This section identifies medication risks, interactions, and adverse effects for safe pharmacologic care. Each test contains 50 questions designed to mirror the difficulty and variety of the real exam.
This is the 6th part of the Adverse Effects-Contraindications series. To explore all practice tests under this topic, use the “Back to Main Topic” button at the end of the page.
Continue Learning
In the Adverse Effects-Contraindications Study Cards section, shared by real NCLEX candidates, you’ll find concise summaries and high-yield insights related to the most tested concepts. It’s a perfect space to reinforce challenging topics and sharpen your recall through quick, focused repetitions. Short, powerful, and repeatable!
Adverse Effects-Contraindications Practice Test 6
A client with schizophrenia has been taking Thorazine (chlorpromazine) 200mg four times a day. Which finding should be reported to the doctor immediately?
- The client complains of thirst.
- The client has gained 4 pounds in the past 2 months.
- The client complains of a sore throat.
- The client naps throughout the day.
Explanation: Answer reason: Sore throat may indicate agranulocytosis/neutropenia, a serious adverse effect of chlorpromazine that requires immediate provider notification. Thirst, mild weight gain, and daytime drowsiness are common nonurgent effects.
Which medication should be avoided when used concomitantly with proton pump inhibitors due to an increased risk of hypomagnesemia?
- Digoxin
- Furosemide
- Spironolactone
- Atorvastatin
Explanation: Answer reason: PPIs can cause hypomagnesemia; loop diuretics like furosemide increase renal magnesium loss, so using them together raises the risk. Spironolactone is magnesium-sparing, and digoxin/atorvastatin do not cause hypomagnesemia.
The client is in the cardiac intensive care unit on dopamine, a vasoconstrictor, and B/P increases to 210/130. Which intervention should the intensive care nurse implement first?
- Discontinue the client’s vasoconstrictor, dopamine.
- Notify the client’s healthcare provider.
- Administer the vasopressor hydralazine.
- Assess the client’s neurological status.
Explanation: Answer reason: Severe hypertension while on a vasoconstrictor indicates an adverse medication effect. The priority is to stop the offending infusion (dopamine) to prevent further harm, then notify the provider. Hydralazine would require an order and is a vasodilator, not a vasopressor; assessing neuro status can follow after removing the cause.
The nurse is administering medications to clients in the cardiac critical care area. Which client should the nurse question administering the medication?
- The client receiving a calcium channel blocker (CCB) who is drinking a glass of grapefruit juice.
- The client receiving a beta-adrenergic blocker who has an apical heart rate of 62 beats/min.
- The client receiving nonsteroidal anti-inflammatory drugs (NSAIDs) who has just finished eating breakfast.
- The client receiving an oral anticoagulant who has an International Normalized Ratio (INR) of 2.8.
Explanation: Answer reason: Grapefruit juice inhibits CYP3A4 and can markedly increase serum levels of many calcium channel blockers, risking hypotension and bradycardia. The other scenarios are within normal/therapeutic parameters.
Which of the following drugs should be stopped before surgery?
- Captopril
- Aspirin high dose
- Clopidogrel
- Ticlopidine
Explanation: Answer reason: High-dose aspirin irreversibly inhibits platelet function and increases perioperative bleeding risk; it is typically discontinued 7–10 days before elective surgery.
The doctor has ordered 80mg of furosemide (Lasix) two times per day. The nurse notes the patient's potassium level to be 2.5meq/L. The nurse should?
- Administer the Lasix as ordered
- Administer half the dose
- Offer the patient a potassium-rich food
- Withhold the drug and call the doctor
Explanation: Answer reason: Potassium 2.5 mEq/L indicates severe hypokalemia. Furosemide is potassium-wasting and could worsen the imbalance and precipitate dysrhythmias. Hold the medication and notify the provider.
The 84-year-old male has returned from the recovery room following a total hip repair. He complains of pain and is medicated with morphine sulfate and promethazine. Which medication should be kept available for the client being treated with opioid analgesics?
- Naloxone (Narcan)
- Ketorolac (Toradol)
- Acetylsalicylic acid (aspirin)
- Atropine sulfate (Atropine)
Explanation: Answer reason: Naloxone is an opioid antagonist that reverses opioid-induced respiratory depression; it should be available when administering opioids. Ketorolac and aspirin are NSAIDs, and atropine is an anticholinergic, none of which reverse opioid effects.
An obstetrical client decides to have an epidural anesthetic to relieve pain during labor. Following administration of the anesthesia, the nurse should monitor the client for?
- Seizures
- Postural hypertension
- Respiratory depression
- Hematuria
Explanation: Answer reason: Epidural analgesia, especially when opioids are used, can cause maternal respiratory depression; the nurse should monitor respiratory rate and depth. Seizures and hematuria are not expected, and the typical blood pressure change is hypotension, not hypertension.
The patient is prescribed metronidazole (Flagyl) for adjunct treatment for a duodenal ulcer. When teaching about this medication, the nurse would include?
- This medication should be taken only until you begin to feel better.
- This medication should be taken on an empty stomach to increase absorption.
- While taking this medication, you do not have to be concerned about being in the sun.
- While taking this medication, alcoholic beverages and products containing alcohol should be avoided.
Explanation: Answer reason: Metronidazole has a disulfiram-like reaction with alcohol; patients must avoid alcoholic beverages and products containing alcohol. The drug should be completed as prescribed, may be taken with food to reduce GI upset, and photosensitivity is not a key concern.
The nurse is assisting in the assessment of the patient admitted with "extreme abdominal pain." The nurse asks the client about the medication that he has been taking because?
- Interactions between medications will cause abdominal pain.
- Various medications taken by mouth can affect the alimentary tract.
- This will provide an opportunity to educate the patient regarding the medications used.
- The types of medications might be attributable to an abdominal pathology not already identified.
Explanation: Answer reason: During assessment for abdominal pain, reviewing current medications is essential because many oral drugs (e.g., NSAIDs, antibiotics, iron, potassium, steroids, opioids) can irritate or affect the GI tract and cause abdominal pain.
The client has an order for gentamycin to be administered. Which lab results should be reported to the doctor before beginning the medication?
- Hematocrit
- Creatinine
- White blood cell count
- Erythrocyte count
Explanation: Answer reason: Gentamycin (aminoglycoside) is nephrotoxic. Serum creatinine reflects renal function; abnormal values must be reported and dosing adjusted before administration.
The client is taking rifampin 600mg po daily to treat his tuberculosis. Which action by the nurse indicates understanding of the medication?
- Telling the client that the medication will need to be taken with juice
- Telling the client that the medication will change the color of the urine
- Telling the client to take the medication before going to bed at night
- Telling the client to take the medication if the night sweats occur
Explanation: Answer reason: Rifampin commonly causes harmless red-orange discoloration of body fluids (urine, tears, sweat). The other options are incorrect: it is typically taken on an empty stomach, not just with juice; timing at bedtime is not required; and it should be taken daily, not only when symptoms occur.
The client is diagnosed with multiple myloma. The doctor has ordered cyclophosphamide (Cytoxan). Which instruction should be given to the client?
- Walk about a mile a day to prevent calcium loss.
- Increase the fiber in your diet.
- Report nausea to the doctor immediately.
- Drink at least eight large glasses of water a day.
Explanation: Answer reason: Cyclophosphamide can cause hemorrhagic cystitis; aggressive hydration helps flush the bladder and reduce toxicity, so encouraging high fluid intake is the key instruction.
The child with seizure disorder is being treated with phenytoin (Dilantin). Which of the following statements by the patient's mother indicates to the nurse that the patient is experiencing a side effect of Dilantin therapy?
- She is very irritable lately.
- She sleeps quite a bit of the time.
- Her gums look too big for her teeth.
- She has gained about 10 pounds in the last six months.
Explanation: Answer reason: Phenytoin commonly causes gingival hyperplasia, presenting as enlarged gums. The mother's report that her child's gums look too big for her teeth matches this adverse effect.
The physician has prescribed tranylcypromine sulfate (Parnate) 10mg bid. The nurse should teach the client to refrain from eating foods containing tyramine because it may cause?
- Hypertension
- Hyperthermia
- Hypotension
- Urinary retention
Explanation: Answer reason: MAOIs like tranylcypromine inhibit tyramine metabolism; ingesting tyramine causes excessive norepinephrine release leading to a hypertensive crisis.
The physician prescribes captopril (Capoten) 25mg po tid for the client with hypertension. Which of the following adverse reactions can occur with administration of Capoten?
- Tinnitus
- Persistent cough
- Muscle weakness
- Diarrhea
Explanation: Answer reason: ACE inhibitors like captopril commonly cause a persistent dry cough due to bradykinin accumulation; the other listed effects are not typical hallmark adverse reactions.
The nurse is providing discharge teaching for a client taking disulfiram (Antabuse). The nurse should instruct the client to avoid eating?
- Peanuts, dates, raisins
- Figs, chocolate, eggplant
- Pickles, salad with vinaigrette dressing, beef
- Milk, cottage cheese, ice cream
Explanation: Answer reason: Disulfiram reacts with alcohol; clients must avoid alcohol-containing foods such as vinegar products. Pickles and vinaigrette contain vinegar, posing risk for a disulfiram–ethanol reaction. The other options do not contain alcohol.
The client is scheduled for a Tensilon test to check for Myasthenia Gravis. Which medication should be kept available during the test?
- Atropine sulfate
- Furosemide
- Prostigmin
- Promethazine
Explanation: Answer reason: Edrophonium (Tensilon) can cause severe cholinergic effects such as bradycardia during testing; atropine sulfate is the antidote and must be on hand.
The nurse is caring for a client with epilepsy who is being treated with carbamazepine (Tegretol). Which laboratory value might indicate a serious side effect of this drug?
- Uric acid of 5mg/dL
- Hematocrit of 33%
- WBC 2000 per cubic millimeter
- Platelets 150,000 per cubic millimeter
Explanation: Answer reason: Carbamazepine can cause bone marrow suppression including agranulocytosis. A WBC count of 2000/mm3 indicates significant leukopenia and signals a serious adverse effect.
An adolescent client is hospitalized with menarthrosis from a Hemophilia A bleeding episode. Which of the following orders should be questioned by the nurse?
- Passive range of motion
- Replacement of factor VIII
- Aspirin for pain management
- Immobilization splint
Explanation: Answer reason: Aspirin inhibits platelet aggregation and increases bleeding risk, so it is contraindicated in clients with active bleeding from Hemophilia A. Factor VIII replacement and immobilization are appropriate.
When caring for a client who is receiving a thrombolytic agent to open a clot occluded coronary artery after a myocardial infarction, which of the following findings would be of GREATEST concern to the nurse?
- Sero sanginous drainage from gums
- Hematemesis
- Pink frothy sputum
- Slight red color at urine
Explanation: Answer reason: Thrombolytics carry a high risk of major bleeding; vomiting blood indicates active GI hemorrhage, a life-threatening adverse effect. Minor oozing (gums, slight hematuria) can occur, and pink frothy sputum suggests heart failure but is not the primary medication-related danger.
When providing discharge teaching to a client with asthma, the nurse will warn against the use of which of the following over-the-counter medications?
- Cortisone ointments for skin rashes
- Aspirin products for pain relief
- Cough medications containing guaifenesin
- Histamine blockers for gastric distress
Explanation: Answer reason: Aspirin and other NSAIDs can precipitate bronchospasm and asthma exacerbations; the other listed OTC products are not typical triggers.
In providing care for a client with pain from a sickle cell crisis, which one of the following medication orders for pain control should be questioned by the nurse?
- Demerol
- Morphine
- Methadone
- Codeine
Explanation: Answer reason: Meperidine (Demerol) is contraindicated in sickle cell disease due to accumulation of its metabolite normeperidine, which can cause neurotoxicity and seizures. Morphine, methadone, and codeine are preferred options.
Which of the following assessments by the nurse would indicate that the client is having a possible adverse response to the INH?
- Severe headache
- Appearance of jaundice
- Tachycardia
- Decreased hearing
Explanation: Answer reason: INH (isoniazid) can cause drug-induced hepatitis. Jaundice indicates liver injury, making it the best sign of an adverse response compared with the other options.
The nurse is caring for a client with asthma who has developed gastroesophageal reflux disease (GERD). Which of the following medications prescribed for the client may aggravate GERD?
- Anticholinergics
- Corticosteroids
- Histamine blocker
- Antibiotics
Explanation: Answer reason: Anticholinergics can relax the lower esophageal sphincter and delay gastric emptying, increasing reflux. Histamine blockers treat GERD; antibiotics and corticosteroids are not typical causes of reflux.
The nurse is teaching a child and the family about the medication phenytoin (Dilantin) prescribed for seizure control. Which of the following side effects is MOST likely to occur?
- Vertigo
- Drowsiness
- Gum hyperplasia
- Vomiting
Explanation: Answer reason: Phenytoin commonly causes gingival hyperplasia, especially in children; oral hygiene education is essential. Other listed effects are less characteristic.
The nurse is administering albuterol (Proventil) to a child with asthma. Which of the following assessments by the nurse indicate the need for an adjustment of the medication?
- Lethargy and fatigue
- Edema is the lower extremities
- Apical Pulse of 112
- Temperature of 101 F
Explanation: Answer reason: Albuterol, a beta-2 adrenergic agonist, commonly causes tachycardia. An apical pulse of 112 indicates an adverse effect requiring dosage adjustment, whereas fever or peripheral edema are not expected effects.
A 4 month-old child taking digoxin (Lanoxin) has a blood pressure of 92/78, resting pulse of 78; respirations 28 and a potassium level of 4.8 mEq/L. The client is irritable and has vomited twice since the morning dose of digoxin. The nurse recognizes that the most common sign of digoxin toxicity is?
- Bradycardia
- Lethargy
- Irritability
- Vomiting
Explanation: Answer reason: In infants, the most common and reliable sign of digoxin toxicity is bradycardia due to increased vagal tone; symptoms like vomiting or irritability can occur but are less specific.
A hospitalized 8 month-old is receiving gentamicin (Cidomycin). In monitoring the infant for drug toxicity, the nurse should review which laboratory results FIRST?
- Blood urea nitrogen
- Thyroxin levels
- Growth hormone levels
- Platelet counts
Explanation: Answer reason: Gentamicin, an aminoglycoside, is nephrotoxic. The priority labs to detect toxicity are renal function tests such as BUN (and creatinine); other listed labs are unrelated.
A hospitalized eight month-old infant is receiving digoxin for the treatment of Tetralogy of Fallot. Prior to administering the next dose of medication, the infant's parent reports that the baby has vomited one time, just after breakfast. The heart rate is 72. The INITIAL response of the nurse should be to?
- Give the dose after lunch
- Reduce the next dose by half
- Double the next dose
- Hold the medication
Explanation: Answer reason: Vomiting and marked bradycardia (HR 72 in an 8‑month‑old) suggest possible digoxin toxicity; withhold the dose and notify the provider.
The nurse is caring for a 20 lbs (9 kg) six month-old with a 3 day history of diarrhea, occasional vomiting and fever. Peripheral intravenous therapy has been initiated, with 5% dextrose in 0.33% normal saline with 20 mEq of potassium per liter infusing at 35 ml/hr. Which of the following should be reported to the physician IMMEDIATELY?
- Three episodes of vomiting in 1 hour
- Periodic crying and irritability
- Vigorous sucking on a pacifier
- No measurable voiding in 4 hours
Explanation: Answer reason: Oliguria while receiving IV fluids containing potassium suggests impaired renal perfusion/function; potassium is contraindicated without adequate urine output due to risk of hyperkalemia. This requires immediate notification. The other findings are less urgent.
A client with schizophrenia is receiving Haloperidol (Haldol) 5 mg t.i.d. The client's family is alarmed and calls the clinic when "his eyes rolled upward." The nurse recognizes this as?
- Oculogyric crisis
- Tardive dyskinesia
- Nystagmus
- Dysphagia
Explanation: Answer reason: Upward deviation of the eyes is an acute dystonic reaction (oculogyric crisis), a known extrapyramidal side effect of haloperidol. Tardive dyskinesia involves late-onset oral-facial movements; nystagmus is rhythmic eye oscillation; dysphagia is difficulty swallowing.
A client complained of nausea, a metallic taste in her mouth, and fine hand tremors 2 hours after her first dose of lithium carbonate (Lithane). The nurse's BEST explanation would be?
- These side effects are common and should subside in a few days
- She is probably having an allergic reaction and should discontinue the drug
- Taking the lithium on an empty stomach should decrease these symptoms
- Decreasing dietary intake of sodium and fluids should minimize the side effects
Explanation: Answer reason: Early lithium effects include GI upset, metallic taste, and fine tremor; they are common and usually resolve in a few days. Do not stop the drug, avoid empty stomach advice (food helps), and do not restrict sodium/fluids as this increases toxicity risk.
Which of the following conditions assessed by the nurse would contraindicate the use of benztropine (Cogentin)?
- Neuromalignant syndrome
- Acute extrapyramidal syndrome
- Glaucoma, myasthenia gravis, prostatic hypertrophy
- Parkinson's disease, atypical tremors
Explanation: Answer reason: Benztropine is an anticholinergic; it is contraindicated in conditions worsened by anticholinergic effects such as glaucoma, myasthenia gravis, and prostatic hypertrophy.
Which of the following nursing assessments indicate immediate discontinuance of an antipsychotic medication?
- Involuntary rhythmic stereotypic movements and tongue protrusion
- Cheek puffing, involuntary movements of extremities and trunk
- Agitation, constant state of motion
- Hyperpyrexia, severe muscle rigidity, malignant hypertension
Explanation: Answer reason: These findings indicate neuroleptic malignant syndrome (NMS)—a life‑threatening reaction to antipsychotics requiring immediate discontinuation and emergency management. Other options describe extrapyramidal symptoms such as tardive dyskinesia or akathisia.
Which of the following should be included when the nurse is teaching a client about chlorpromazine HCL (Thorazine)?
- Avoid direct sunlight
- Avoid foods containing tyramine
- Avoid foods fermented with yeast
- Avoid canned citrus fruit drinks
Explanation: Answer reason: Chlorpromazine, a phenothiazine antipsychotic, causes marked photosensitivity. Client teaching includes avoiding direct sunlight and using sun protection. The tyramine and yeast restrictions apply to MAOIs, and avoiding canned citrus drinks is not specific to chlorpromazine.
A client who has been receiving urokinase has a large bloody bowel movement. Which action would be best for the nurse to take immediately?
- Administer vitamin K IM
- Stop the urokinase
- Reduce the urokinase and administer heparin
- Stop the urokinase and call the doctor
Explanation: Answer reason: Urokinase is a thrombolytic; a large bloody stool indicates serious bleeding. The priority is to stop the drug and notify the provider. Vitamin K reverses warfarin, not thrombolytics, and heparin would worsen bleeding.
The nurse is teaching the client regarding use of sodium warfarin. Which statement made by the client would require further teaching?
- "I will have blood drawn every month."
- "I will assess my skin for a rash."
- "I take aspirin for a headache."
- "I will use an electric razor to shave."
Explanation: Answer reason: Aspirin increases bleeding risk when taken with warfarin and is generally contraindicated unless specifically prescribed. Monthly INR checks and using an electric razor are appropriate; monitoring skin is reasonable for adverse effects/bleeding signs.
Which drug should be kept ready during the Tensilon test?
- Atropine
- Physostigmine
- Dopamine
- Hydrocortisone
Explanation: Answer reason: Edrophonium (Tensilon) can cause severe bradycardia and other muscarinic effects; atropine is the antidote to reverse these effects and must be on hand during the test.
Which medication should be used with caution in the obstetric client with diabetes?
- Magnesium sulfate
- Brethine
- Stadol
- Ancef
Explanation: Answer reason: Brethine (terbutaline), a beta-adrenergic tocolytic, can cause maternal hyperglycemia; therefore it should be used cautiously in clients with diabetes.
Which of the following medications may cause a complication with the treatment plan of a client with diabetes?
- Aspirin
- Steroids
- Sulfonylureas
- Angiotensin converting enzyme (ACE) inhibitors
Explanation: Answer reason: Glucocorticoids increase insulin resistance and hepatic glucose production, causing hyperglycemia that worsens glycemic control in diabetics.
Which one of the following statements, if made by the client, indicates teaching about Inderal (propranolol) has been effective: "I should not stop taking the Inderal suddenly because it may cause"?
- Seizures
- Decreased blood pressure
- Nervousness
- A heart attack
Explanation: Answer reason: Abrupt withdrawal of beta blockers like propranolol can cause rebound sympathetic activity leading to angina, dysrhythmias, hypertension, and myocardial infarction; thus the correct concern is a heart attack.
A client has received her first dose of fluphenazine (Prolixin) 2 hours ago. She suddenly experiences torticollis and involuntary spastic muscle movement. In addition to administering the ordered anticholinergic drug, the nurse should?
- Have respiratory support equipment available
- Immediately place her in the seclusion room
- Assess the client for anxiety and agitation
- Administer prn dose of I.m. antipsychotic medication
Explanation: Answer reason: Sudden torticollis and spastic movements after first dose of fluphenazine indicate an acute dystonic reaction that can progress to laryngospasm; besides giving an anticholinergic, airway support must be immediately available.
In discharge teaching, the nurse should emphasize that which of the following is a common side effect of clozapine (Clozaril) therapy?
- Dry mouth
- Rhinitis
- Dry skin
- Extreme salivation
Explanation: Answer reason: Clozapine commonly causes sialorrhea (hypersalivation), a distinctive adverse effect; dry mouth or dry skin are not typical with this drug.
A post-operative client is admitted to the post-anesthesia recovery room. The anesthetist reports that malignant hyperthermia occurred during surgery. You recognize that this complication is related to?
- Allergy to general anesthesia
- Pre-existing bacterial infection
- A genetic predisposition
- Selected surgical procedures
Explanation: Answer reason: Malignant hyperthermia is an inherited disorder (commonly due to ryanodine receptor mutation) triggered by inhaled anesthetics and/or succinylcholine; it is not due to allergy, infection, or the type of surgery.
A client confides in the RN that a friend has told her the medication she takes for depression, Wellbutrin, was taken off the market because it caused seizures. An appropriate response would be to tell the client?
- Ask your friend about the source of this information.
- Omit the next doses until you talk with the doctor.
- There were problems, but the recommended dose is changed.
- Your physician knows the best drug for your condition.
Explanation: Answer reason: Bupropion (Wellbutrin) had a seizure risk at higher doses and was reintroduced with dose limits; appropriate patient education is to acknowledge prior issues and explain that dosing recommendations were changed to reduce risk.
You are caring for a client with a diagnosis of schizophrenia who has been treated with Quetiapine (Seroquel) for one month. Today the client is increasingly agitated and complains of muscle stiffness. Critical assessments to report are?
- Elevated temperature and sweating.
- Decreased pulse and blood pressure.
- Mental confusion and general weakness.
- Muscle spasms and seizures.
Explanation: Answer reason: Antipsychotic use with rigidity and agitation raises concern for neuroleptic malignant syndrome; priority findings to report are hyperthermia and diaphoresis.
A 55 year-old woman is taking Prednisone and Aspirin as part of her treatment for rheumatoid arthritis. Which one of the following would be an appropriate intervention for the nurse?
- Assess the pulse rate q 4 hours.
- Monitor her level of consciousness q shift.
- Test her stools for occult blood.
- Discuss fiber in the diet to prevent constipation.
Explanation: Answer reason: Prednisone and aspirin increase risk of GI irritation and bleeding; monitoring for occult blood in stool is the appropriate nursing intervention. Other options do not address this adverse effect.
A client with a history of heart disease takes prophylactic aspirin daily. The nurse should monitor which of the following to prevent aspirin toxicity?
- Serum potassium
- Protein intake
- Lactose tolerance
- Serum albumin
Explanation: Answer reason: Aspirin is highly protein-bound; low serum albumin increases unbound salicylate levels and risk of toxicity. Monitoring serum albumin helps prevent toxic effects.
You are assigned to care for a client newly diagnosed with angina. As part of discharge teaching, it is important to remind the client to remove the nitroglycerine patch after 12 hours in order to prevent?
- Skin irritation
- Drug tolerance
- Severe headaches
- Postural hypotension
Explanation: Answer reason: Transdermal nitroglycerin requires a daily nitrate-free interval (about 10–12 hours) to prevent tolerance; removing the patch after 12 hours helps maintain drug effectiveness.
Think you’re ready for the NCLEX?
Run through a full 150-question exam just like the real thing. You’ll hit the 85-question checkpoint and get a clear report showing where you stand.
