A client who receives multiple antihypertensive medications experiences syncope due to a drop in blood pressure to 70/40 mm Hg. Which is the rationale for the nurse's decision to hold the client's scheduled antihypertensive medications?
Increased urinary clearance of the multiple medications has produced diuresis and lowered the blood pressure.
The synergistic effect of the multiple medications has resulted in drug toxicity and hypotension.
The antagonistic interaction among the various blood pressure medications has reduced their effectiveness.
The additive effect of multiple medications has caused the blood pressure to drop too low.
The Correct Answer is D
Choice A reason: Increased urinary clearance of the multiple medications is not the cause of the client's syncope. Diuresis is a common side effect of some antihypertensive medications, such as diuretics, but it does not lower the blood pressure to a dangerous level. The nurse should monitor the client's fluid and electrolyte balance and urine output, but it is not the priority action in this situation.
Choice B reason: The synergistic effect of the multiple medications is not the cause of the client's syncope. Synergism is when two or more drugs work together to produce a greater effect than the sum of their individual effects. This can be beneficial or harmful, depending on the drugs and the doses. The nurse should check the client's medication history and avoid prescribing drugs that have a negative synergistic effect, but it is not the most likely explanation for the client's hypotension.
Choice C reason: The antagonistic interaction among the various blood pressure medications is not the cause of the client's syncope. Antagonism is when two or more drugs work against each other to reduce or cancel out their effects. This can decrease the effectiveness of the treatment and increase the risk of complications. The nurse should check the client's medication history and avoid prescribing drugs that have a negative antagonistic effect, but it is not the most likely explanation for the client's hypotension.
Choice D reason: The additive effect of multiple medications is the most likely cause of the client's syncope. Additivity is when two or more drugs have a similar effect and their combined effect is equal to the sum of their individual effects. This can lower the blood pressure too much and cause symptoms such as dizziness, fainting, and shock. The nurse should hold the client's scheduled antihypertensive medications and notify the healthcare provider. The nurse should also monitor the client's vital signs, level of consciousness, and perfusion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Keeping an oral liquid or glucose source available is a good intervention for any client who is receiving insulin, as it can help treat hypoglycemia, which is a low blood sugar level. However, it is not the most important intervention for a client who is receiving insulin lispro, which is a rapid-acting insulin that starts working within 15 minutes and lasts for 2 to 4 hours. The nurse should ensure that the client has a meal ready before giving this insulin, as it can cause severe hypoglycemia if the client does not eat soon after.
Choice B reason: Providing meals at the same time this insulin is given is the most important intervention for a client who is receiving insulin lispro, which is a rapid-acting insulin that mimics the natural insulin response to a meal. The nurse should coordinate the timing of the insulin injection and the meal, as the insulin will lower the blood sugar level quickly and the meal will provide the glucose needed to prevent hypoglycemia. The nurse should also teach the client and the family about the importance of eating within 15 minutes of taking this insulin.
Choice C reason: Assessing for hypoglycemia between meals is a good intervention for any client who is receiving insulin, as it can help detect and treat low blood sugar levels. However, it is not the most important intervention for a client who is receiving insulin lispro, which is a rapid-acting insulin that has a short duration of action. The risk of hypoglycemia is highest during the peak of the insulin action, which is 30 to 90 minutes after the injection. The nurse should monitor the client's blood sugar level more frequently during this time and provide snacks as needed.
Choice D reason: Checking blood glucose levels every six hours is not a sufficient intervention for a client who is receiving insulin lispro, which is a rapid-acting insulin that requires more frequent monitoring. The nurse should check the blood glucose level before each meal and at bedtime, as well as before and after exercise, to adjust the insulin dose and prevent hyperglycemia or hypoglycemia. The nurse should also teach the client and the family how to use a glucometer and record the blood glucose results.
Correct Answer is D
Explanation
Choice A reason: Decreasing pain and burning during urination is not the purpose of probenecid, which is a drug that lowers the level of uric acid in the blood. Probenecid is used to treat gout, a condition that causes painful inflammation of the joints due to the accumulation of uric acid crystals. Probenecid does not have any effect on the urinary tract or its symptoms.
Choice B reason: Increasing the strength of the urine stream is not the purpose of probenecid, which is a drug that increases the amount of uric acid in the urine. Probenecid works by blocking the reabsorption of uric acid by the kidneys, thus increasing its excretion. Probenecid does not have any effect on the bladder or its function.
Choice C reason: Preventing the formation of kidney stones is not the purpose of probenecid, which is a drug that can actually increase the risk of kidney stones. Probenecid increases the concentration of uric acid in the urine, which can lead to the formation of uric acid stones. The nurse should instruct the client to drink plenty of fluids and avoid foods high in purines, such as organ meats, seafood, and alcohol, to prevent kidney stones.
Choice D reason: Promoting excretion of uric acid in the urine is the purpose of probenecid, which is a drug that reduces the level of uric acid in the blood. Probenecid helps prevent gout attacks by preventing the buildup of uric acid crystals in the joints. The nurse should monitor the client's serum uric acid level, renal function, and urine output, and advise the client to take the medication with food to avoid stomach upset.
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