ATI-P ATI Pharmacology - Set 5 - Part 2

Correct Answer: Stop the cephalosporin immediately.

Hives, low blood pressure, and difficulty breathing during a cephalosporin infusion suggest a serious hypersensitivity reaction. The nurse's first action is to stop the medication immediately and then notify the provider to prevent progression to anaphylaxis. Option a is incorrect because merely slowing the infusion allows the offending drug to keep entering the bloodstream during a hypersensitivity reaction. With signs of anaphylaxis present, the cephalosporin must be stopped at once rather than continued at a reduced rate. Option c is incorrect because offering water does nothing to halt an allergic reaction and delays essential care. When a client shows hives, low blood pressure, and breathing difficulty, the priority is stopping the cephalosporin immediately to limit the reaction. Option d is incorrect because waiting to reassess could be fatal during an evolving anaphylactic reaction. These findings demand that the nurse stop the cephalosporin right away and notify the provid

Correct Answer: Avoid all alcohol while taking this drug.

Cefotetan can cause a disulfiram-like reaction when combined with alcohol, producing flushing, nausea, and other distressing symptoms. The nurse should instruct the client to avoid all alcohol while taking this cephalosporin and for a period afterward. Option b is incorrect because even a single glass of wine can trigger a disulfiram-like reaction with cefotetan. The instruction must be complete avoidance, not moderate intake, because any alcohol can provoke an unpleasant and potentially serious response. Option c is incorrect because alcohol does not enhance the antibiotic and instead causes a harmful interaction with cefotetan. The correct teaching is total avoidance of alcohol, since combining the two leads to flushing, vomiting, and similar reactions. Option d is incorrect because restricting alcohol to only the first day leaves the client at risk throughout therapy. Because cefotetan produces a disulfiram-like reaction, the client must avoid alcohol for the entire course and a sho

Correct Answer: Infuse the vancomycin slowly.

Red man syndrome results from infusing vancomycin too quickly, causing flushing, rash, and hypotension. The nurse should infuse the medication slowly, over at least an hour, to prevent this reaction related to rapid administration. Option a is incorrect because a rapid push is exactly what triggers red man syndrome, with flushing and low blood pressure. To avoid this reaction, vancomycin must be given slowly over an extended period rather than pushed quickly into the vein. Option b is incorrect because warming the solution is not a measure for preventing red man syndrome. The reaction relates directly to infusion speed, so the nurse prevents it by slowing the rate, not by adjusting the medication's temperature. Option c is incorrect because adding a diuretic does not prevent red man syndrome and could introduce other risks. The reaction is caused by rapid infusion, so the appropriate preventive action is administering the vancomycin slowly over at least an hour.

Correct Answer: A decrease in urine output

The major toxicity of vancomycin is renal failure, so a decrease in urine output is an important warning sign. The nurse should report reduced output and monitor kidney function and vancomycin trough levels closely. Option a is incorrect because a metallic taste is not a recognized vancomycin toxicity and is associated more with other drugs. The serious concern with vancomycin is kidney injury, signaled by falling urine output rather than changes in taste. Option c is incorrect because a brief sensation of warmth may accompany infusion but does not indicate the drug's major toxicity. Renal impairment, shown by decreased urine output, is the significant finding the nurse must report when monitoring vancomycin. Option d is incorrect because slight redness at a previous IV site reflects local irritation, not systemic toxicity. The major danger with vancomycin is renal failure, so the priority finding to report is a drop in the client's urine output.

Correct Answer: Ringing in the ears

Aminoglycosides such as gentamicin can damage the inner ear, causing ototoxicity. Ringing in the ears, along with dizziness or hearing loss, is an early warning sign the nurse should monitor for and report to the provider. Option a is incorrect because a craving for salt is unrelated to aminoglycoside ototoxicity. The nurse instead watches for ear-related findings such as tinnitus, hearing loss, and balance problems, which reflect gentamicin's harmful effect on the inner ear. Option b is incorrect because a dry cough is not a feature of ototoxicity from gentamicin. The relevant findings involve the ears and balance, so the nurse monitors for ringing in the ears and dizziness rather than respiratory symptoms. Option c is incorrect because reddening of the cheeks does not indicate ototoxicity and may suggest other causes. With gentamicin, the nurse focuses on hearing and balance disturbances, making tinnitus the expected sign of inner ear damage to report.

Correct Answer: A rise in blood urea and creatinine

Aminoglycosides can cause nephrotoxicity leading to acute tubular necrosis. A rise in blood urea nitrogen and creatinine signals declining kidney function, so the nurse should report these findings and monitor intake and output closely. Option a is incorrect because a modest increase in appetite is reassuring and unrelated to kidney damage. Nephrotoxicity from gentamicin is reflected in rising kidney laboratory values and reduced urine output, not in improvements in how much the client eats. Option c is incorrect because pink cheeks indicate normal coloring and do not point to renal injury. The nurse identifies nephrotoxicity by elevated kidney markers such as creatinine, along with cloudy urine, rather than by the client's facial appearance. Option d is incorrect because a slower resting respiratory rate does not reflect aminoglycoside kidney toxicity. The warning findings are increases in blood urea nitrogen and creatinine, which show that gentamicin is impairing the client'

Correct Answer: Right before the next dose

For divided dosing of an aminoglycoside, the trough level is drawn right before the next dose. This timing reflects the lowest drug concentration and helps confirm the medication has cleared adequately to avoid toxicity. Option b is incorrect because drawing immediately after the infusion captures the peak level, not the trough. The peak is measured shortly after completion, whereas the trough must be obtained just before the next scheduled dose to reflect the lowest concentration. Option c is incorrect because sampling halfway between doses measures neither the true peak nor the true trough. Accurate trough monitoring requires drawing the level right before the next dose, ensuring the result reflects the drug's lowest point. Option d is incorrect because drawing at a random time would not yield a meaningful trough value. Proper interpretation depends on timing the sample right before the next dose, so the laboratory result represents the lowest concentration in the dosing interva

Correct Answer: Avoid taking it with dairy products.

Tetracycline binds with calcium and other minerals to form nonabsorbable compounds, reducing its effectiveness. The nurse should teach the client to avoid taking it with dairy products, antacids, and iron, separating them by adequate time. Option a is incorrect because taking tetracycline with milk causes it to bind with calcium, forming chelates that block absorption. Rather than improving the drug, dairy reduces its effect, so the client should avoid milk near dosing times. Option b is incorrect because antacids contain cations that chelate tetracycline and decrease its absorption. The correct instruction is to separate antacids from the drug, not to take them together, which would interfere with the antibiotic's action. Option d is incorrect because iron also binds tetracycline and prevents proper absorption, so chewing an iron tablet with each dose would undermine therapy. The client should keep iron supplements separated in time from the antibiotic.

Correct Answer: Pregnancy

Tetracyclines are contraindicated in pregnancy because they can stain developing teeth and affect fetal bone growth. The nurse should recognize pregnancy as a reason to withhold the drug and consult the provider about an alternative. Option b is incorrect because well-controlled hypertension is not a contraindication to tetracycline. The condition the nurse must identify is pregnancy, since tetracyclines pose a risk to fetal teeth and bone that blood pressure status does not. Option c is incorrect because seasonal allergies do not contraindicate tetracycline therapy. The significant concern is pregnancy, because the drug crosses the placenta and discolors developing teeth, whereas ordinary environmental allergies do not affect its safety. Option d is incorrect because preferring evening dosing is a scheduling matter, not a contraindication, though bedtime dosing should be avoided to reduce esophageal irritation. The true contraindication here is pregnancy because of harm to fetal devel

Correct Answer: I will use sunscreen when outdoors.

Tetracyclines like doxycycline cause photosensitivity, increasing the risk of severe sunburn. The client's plan to use sunscreen and protective clothing outdoors shows understanding of how to prevent this common adverse effect. Option a is incorrect because lying down immediately after a dose raises the risk of esophageal ulceration from the drug. The client should remain upright after taking doxycycline, so this statement reflects a misunderstanding rather than correct technique. Option b is incorrect because stopping the antibiotic when fever resolves leaves the infection incompletely treated and promotes resistance. The client must finish the full course, so this statement indicates a need for further teaching rather than understanding. Option c is incorrect because taking doxycycline with calcium causes chelation that reduces absorption. Separating the antibiotic from calcium is required, so planning to take them together shows the client has not grasped the teaching about min

Correct Answer: An alternative for penicillin-allergic clients

Erythromycin, a macrolide, is commonly used as an alternative for clients who have a penicillin allergy. The nurse should recognize it can treat many of the same infections without the cross-sensitivity risk associated with penicillins. Option a is incorrect because erythromycin has no requirement related to bladder emptying, which is irrelevant to antibiotic dosing. Its key role is serving as a substitute antibiotic for clients allergic to penicillin, treating susceptible bacterial infections. Option b is incorrect because erythromycin is an antibacterial agent and has no effect on viruses. The nurse should recognize it as a penicillin alternative for bacterial infections, since antibiotics do not treat viral illnesses. Option d is incorrect because erythromycin is given orally or intravenously, not rectally, and route is not its defining feature. The important point is that it provides an option for penicillin-allergic clients needing antibacterial therapy.

Correct Answer: A prolonged QT interval

Erythromycin can prolong the QT interval and cause dangerous dysrhythmias, so an existing prolonged QT interval is a contraindication. The nurse should report this finding so the provider can select a safer antibiotic. Option a is incorrect because seasonal allergies do not contraindicate erythromycin. The relevant cardiac concern is a prolonged QT interval, because the drug can further lengthen it and trigger life-threatening rhythm disturbances, unlike ordinary environmental allergies. Option b is incorrect because occasional mild heartburn is not a contraindication and may even improve with taking the drug with food. The important finding to report is a prolonged QT interval, given erythromycin's risk of provoking serious dysrhythmias. Option c is incorrect because preferring a liquid form is a formulation choice, not a contraindication. The nurse must instead identify a prolonged QT interval, since erythromycin can worsen QT prolongation and lead to potentially fatal cardiac r

Correct Answer: Take it on an empty stomach with water.

Oral erythromycin is generally taken on an empty stomach with a full glass of water for best absorption, though it may be taken with food if gastric upset occurs. The nurse should include this timing in the teaching. Option a is incorrect because limiting erythromycin to bedtime is not the standard instruction and does not address absorption. The appropriate teaching is to take it on an empty stomach with water, adjusting to food only if stomach upset develops. Option c is incorrect because a high-fat snack is not required for erythromycin and is not part of standard dosing guidance. The drug is best absorbed on an empty stomach, so the client should take it with water rather than pairing it with fatty food. Option d is incorrect because taking erythromycin with an antacid is not the recommended approach. The correct instruction is administration on an empty stomach with a full glass of water, which supports proper absorption of the antibiotic.

Correct Answer: Drink plenty of fluids each day.

Sulfonamides can cause crystalluria, where crystals form in the urinary tract. Drinking plenty of fluids helps keep urine dilute and prevents crystal formation, so the nurse should teach the client to maintain generous fluid intake. Option b is incorrect because limiting water concentrates the urine and raises the risk of crystalluria with sulfonamides. The correct instruction is to increase fluids, which dilutes the urine and helps prevent crystals from forming in the kidneys and bladder. Option c is incorrect because grapefruit juice is not part of the teaching for this drug and is unrelated to preventing its main urinary risk. The essential instruction is generous fluid intake to avoid crystalluria during sulfonamide therapy. Option d is incorrect because stopping when burning resolves leaves the infection incompletely treated and promotes resistance. The client must complete the full course and drink ample fluids, so discontinuing early is incorrect guidance for this medication.

Correct Answer: A widespread blistering skin rash

Sulfonamides can cause Stevens-Johnson syndrome, a severe hypersensitivity reaction. A widespread blistering skin rash is an early warning, so the nurse should stop the medication and notify the provider immediately. Option a is incorrect because an orange urine tint is associated with other urinary drugs and is not a sign of a dangerous allergic reaction. The serious finding to report with sulfonamides is a blistering rash that may signal Stevens-Johnson syndrome. Option b is incorrect because a slightly larger appetite is reassuring and unrelated to hypersensitivity. The nurse must instead watch for a severe blistering rash, which can indicate the life-threatening skin reaction associated with sulfonamide therapy. Option c is incorrect because a small bruise at an IV site reflects minor local trauma, not a systemic allergic reaction. The critical hypersensitivity finding with this drug is a spreading blistering rash, prompting immediate discontinuation and provider notification.

Correct Answer: A sulfa-containing diuretic

Clients allergic to sulfa-containing drugs, including certain diuretics, should not receive sulfonamide antibiotics because of cross-sensitivity. The nurse should recognize this allergy as a contraindication and notify the provider before administration. Option a is incorrect because a latex allergy does not cross-react with sulfonamide antibiotics. The relevant contraindication is a prior reaction to a sulfa-containing drug, since trimethoprim-sulfamethoxazole could provoke a similar hypersensitivity response. Option b is incorrect because a shellfish allergy is unrelated to sulfonamide hypersensitivity. The concern that contraindicates this antibiotic is a documented allergy to sulfa drugs such as certain diuretics, not to seafood. Option d is incorrect because an adhesive tape allergy is a contact sensitivity that does not affect antibiotic choice. The contraindication the nurse must identify is a sulfa drug allergy, which carries cross-sensitivity with the prescribed sulfonamide.

Correct Answer: The urine may turn a brownish color.

Nitrofurantoin commonly turns the urine a rust-yellow to brown color, which is an expected and harmless effect. The nurse should reassure the client that this discoloration does not indicate a problem and is anticipated with therapy. Option b is incorrect because nitrofurantoin does not whiten the teeth; in fact, it can stain them if capsules are opened. The expected change the nurse teaches about is the brownish urine, not any whitening of the teeth. Option c is incorrect because a blue skin tint is not associated with nitrofurantoin and would suggest another problem such as poor oxygenation. The harmless expected effect of this drug is brown discoloration of the urine. Option d is incorrect because nitrofurantoin does not alter hair color. The anticipated and benign change the nurse should mention is the brownish coloring of the urine, which clients may otherwise mistake for a sign of injury.

Correct Answer: Chronic kidney disease

Nitrofurantoin depends on adequate kidney function for both effectiveness and safe elimination. Chronic kidney disease increases the risk of toxicity and peripheral neuropathy, so the nurse should report this finding to the provider. Option a is incorrect because frequent headaches are not a contraindication to nitrofurantoin, though headache can occur as a side effect. The important finding to report is impaired kidney function, which makes the drug both less effective and more toxic. Option b is incorrect because a mild seasonal cough is not a contraindication, although the nurse should watch for serious pulmonary reactions during therapy. The condition that contraindicates nitrofurantoin is chronic kidney disease due to impaired excretion. Option d is incorrect because preferring capsules is a formulation choice, not a clinical contraindication. The nurse must instead identify chronic kidney disease, because reduced renal clearance leads to drug accumulation and a higher risk of per

Correct Answer: Wear protective clothing in the sun.

Ciprofloxacin can cause phototoxicity, leading to severe sunburn even with sunscreen. The nurse should instruct the client to avoid sun exposure and wear protective clothing outdoors, and to stop the drug if a reaction occurs. Option b is incorrect because sunlight does not strengthen ciprofloxacin; it increases the risk of a severe phototoxic reaction. The correct teaching is to limit sun exposure and cover the skin, since the drug heightens sensitivity to ultraviolet light. Option c is incorrect because a tanning bed emits ultraviolet light that can also trigger phototoxicity with ciprofloxacin. Recommending tanning beds is unsafe; the client should avoid both natural and artificial ultraviolet sources and wear protective clothing. Option d is incorrect because sun exposure does affect this drug, contrary to the statement, by causing phototoxicity. The essential instruction is to avoid direct sunlight and wear protective clothing, because ciprofloxacin makes severe sunburn more likel

Correct Answer: Instruct the client to stop the drug and rest.

Pain and swelling at the Achilles tendon during fluoroquinolone therapy may signal tendon injury or rupture. The nurse should instruct the client to stop ciprofloxacin and avoid exercise until the inflammation subsides, then notify the provider. Option a is incorrect because continued exercise increases stress on an inflamed Achilles tendon and raises the risk of rupture. The appropriate action is to stop the drug and rest the area, not to keep the client active while these warning signs are present. Option b is incorrect because applying heat and continuing ciprofloxacin ignores the danger of tendon rupture. The client should discontinue the medication and rest the tendon, because ongoing therapy and activity can worsen this fluoroquinolone-associated injury. Option c is incorrect because achilles tendon pain is not an expected harmless effect; it is a serious adverse reaction. Rather than offering false reassurance, the nurse should have the client stop the drug, avoid exercise, and