A nurse is caring for a client who is receiving heparin therapy. If the client requires a reversal of the effects of heparin, which of the following medications should the nurse expect the provider to prescribe?
Atropine
Vitamin K
Vitamin B12
Protamine
The Correct Answer is D
A. Atropine. Atropine is an anticholinergic medication used to treat bradycardia and reduce secretions before surgery. It has no effect on reversing anticoagulation caused by heparin and would not be an appropriate treatment for heparin overdose.
B. Vitamin K. Vitamin K is used as an antidote for warfarin toxicity, as it helps produce clotting factors that warfarin inhibits. However, it does not reverse the effects of heparin, which works by enhancing the activity of antithrombin to prevent clot formation.
C. Vitamin B12. Vitamin B12 is essential for red blood cell production and neurological function, primarily used to treat conditions like pernicious anemia. It does not have any role in reversing the anticoagulant effects of heparin and would not be beneficial in this situation.
D. Protamine. Protamine sulfate is the specific antidote for heparin overdose. It binds to heparin, neutralizing its anticoagulant effects and preventing excessive bleeding. Protamine is administered intravenously in cases of heparin toxicity or when urgent reversal is needed, such as before surgery or in cases of uncontrolled bleeding.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Promethazine. Promethazine is an antihistamine used to treat nausea, vomiting, and allergic reactions. It does not have antihypertensive properties and does not lower blood pressure. Instead, it has sedative effects and is commonly used for motion sickness or as a preoperative medication.
B. Amlodipine. Amlodipine is a calcium channel blocker that lowers blood pressure by relaxing blood vessels and improving blood flow. It is commonly prescribed for hypertension and angina, as it reduces vascular resistance and decreases the workload on the heart. Clients taking amlodipine should be monitored for hypotension, edema, and dizziness.
C. Fluconazole. Fluconazole is an antifungal medication used to treat fungal infections such as candidiasis. It does not affect blood pressure regulation and is not used for managing hypertension. However, it can interact with certain medications, so monitoring for drug interactions is important.
D. Phenazopyridine. Phenazopyridine is a urinary analgesic used to relieve symptoms of urinary tract infections (UTIs), such as burning and pain during urination. It does not lower blood pressure and has no effect on cardiovascular function. Clients should be advised that this medication can cause orange discoloration of the urine.
Correct Answer is D
Explanation
A. Alprazolam. Alprazolam, a benzodiazepine, is metabolized in the liver and can accumulate in clients with chronic liver disease, increasing the risk of sedation, confusion, and hepatic encephalopathy. Benzodiazepines should be used cautiously or avoided in clients with liver impairment.
B. Rotavirus vaccine. The rotavirus vaccine is a live, attenuated vaccine given to infants to prevent severe diarrhea caused by rotavirus infection. It is not recommended for adults, including those with chronic liver disease, as it is not indicated for their age group or condition.
C. Niacin. Niacin is used to lower cholesterol and treat vitamin B3 deficiency, but it can cause hepatotoxicity, especially in high doses. In clients with chronic liver disease, niacin may worsen liver function, making it an inappropriate choice unless absolutely necessary and closely monitored.
D. Hepatitis A vaccine. Clients with chronic liver disease are at higher risk of severe complications from hepatitis A infection. Vaccination provides protection against hepatitis A, which can cause acute liver failure in individuals with pre-existing liver disease. It is recommended to prevent further liver damage and protect overall health.
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