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.

Answer and Explanation

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.

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Correct Answer is B

Explanation

Choice A reason: Measuring the client's urinary output is not the most appropriate action for the nurse to take. Although urinary output is an important indicator of renal function, it is not related to the color change of the urine. The nurse should monitor the client's fluid balance as part of the routine care, but it is not a priority.

Choice B reason: Explaining the color change is normal is the most appropriate action for the nurse to take. Carbidopa/levodopa can cause the urine to become dark brown or black, which is a harmless side effect. The nurse should reassure the client that this is not a sign of a serious problem and does not affect the effectiveness of the medication.

Choice C reason: Obtaining a specimen for a urine culture is not the most appropriate action for the nurse to take. A urine culture is used to diagnose a urinary tract infection (UTI), which is characterized by symptoms such as dysuria, frequency, urgency, and hematuria. The color change of the urine due to carbidopa/levodopa is not indicative of a UTI. The nurse should obtain a urine culture only if the client has signs or symptoms of a UTI.

Choice D reason: Encouraging an increase in oral intake is not the most appropriate action for the nurse to take. Although adequate hydration is important for the client's health, it is not related to the color change of the urine. The nurse should encourage the client to drink enough fluids to prevent dehydration, but it is not a priority.

A. Apply oxygen face mask. B. Remove the morphine patches. C. Administer a narcotic reversal drug. D. Monitor blood pressure.

Correct Answer is B

Explanation

Choice A reason: This is not the first action for the nurse to take. Applying oxygen face mask may help the client with shortness of breath, but it does not address the underlying cause of the respiratory depression, which is the overdose of morphine. The nurse should first remove the source of the excess morphine and then provide oxygen therapy as needed.

Choice B reason: This is the first action for the nurse to take. Removing the morphine patches is the most urgent and effective way to stop the further absorption of the drug and reduce the risk of life-threatening complications, such as respiratory arrest, coma, or death. The nurse should remove all the patches from the client's body and dispose of them safely. The nurse should also notify the healthcare provider and prepare to administer a narcotic reversal drug, such as naloxone, if indicated.

Choice C reason: This is not the first action for the nurse to take. Administering a narcotic reversal drug may be necessary to reverse the effects of the morphine overdose, but it is not the most immediate intervention. The nurse should first remove the morphine patches to prevent further exposure and then assess the client's level of consciousness, respiratory rate, and oxygen saturation. The nurse should follow the healthcare provider's orders and the facility's protocol for administering a narcotic reversal drug.

Choice D reason: This is not the first action for the nurse to take. Monitoring blood pressure may be important to assess the client's hemodynamic status, but it is not the most critical intervention. The nurse should first remove the morphine patches to prevent further deterioration and then monitor the client's vital signs, including blood pressure, pulse, and temperature. The nurse should also watch for signs of hypotension, shock, or cardiac arrest.

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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?

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Explanation

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