A nurse is preparing to titrate a continuous nitroprusside infusion for a client. The nurse should plan to titrate the infusion according to which of the following assessments?
Blood pressure
Stroke volume
Cardiac output
Urine output
The Correct Answer is A
Choice A Reason:
Blood pressure is correct. Nitroprusside is a medication used to lower blood pressure in conditions such as hypertensive emergencies. It's titrated based on blood pressure readings, with the goal of achieving the desired target blood pressure range as directed by the healthcare provider. The nurse would monitor the client's blood pressure closely and adjust the infusion rate accordingly to achieve the prescribed blood pressure parameters.
Choice B Reason:
Stroke volume is incorrect. While stroke volume (the amount of blood ejected by the heart with each contraction) is important in assessing heart function, it's not directly used to titrate a nitroprusside infusion. Nitroprusside primarily acts as a vasodilator to reduce blood pressure, rather than affecting stroke volume.
Choice C Reason:
Cardiac output is incorrect. Cardiac output (the volume of blood pumped by the heart per minute) is also a crucial measure of heart function, but adjusting a nitroprusside infusion based on cardiac output is not a common practice. Nitroprusside's primary action is to dilate blood vessels, impacting blood pressure regulation more directly than cardiac output.
Choice D Reason:
Urine output is incorrect. While urine output is an important indicator of renal function and overall fluid balance, it is not typically used as the main parameter for titrating nitroprusside. Nitroprusside's primary effect is on vasodilation and blood pressure control rather than directly impacting urine output.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason:
Increase in serum glucose is incorrect. Desmopressin, which is a synthetic form of vasopressin, primarily affects water reabsorption in the kidneys and doesn't directly impact glucose levels. Therefore, an increase in serum glucose wouldn't be an expected therapeutic response to desmopressin for diabetes insipidus.
Choice B Reason:
Decrease in blood pressure is incorrect. Desmopressin is primarily used for its antidiuretic effect, concentrating urine by increasing water reabsorption in the kidneys. It typically doesn't have a significant impact on blood pressure. Therefore, a decrease in blood pressure wouldn't typically be an anticipated therapeutic response to desmopressin in this context.
Choice C Reason:
Decrease in urine output is correct. Desmopressin is a synthetic form of vasopressin (antidiuretic hormone) used to treat diabetes insipidus, a condition characterized by excessive urination and extreme thirst due to the inability to concentrate urine. The primary goal of desmopressin is to reduce urine output by increasing water reabsorption in the kidneys, thereby decreasing excessive urination. Therefore, a decrease in urine output would indicate a therapeutic response to the medication in this context.
Choice D Reason:
Increase in WBC count is incorrect. Desmopressin's action is centered on affecting kidney function by regulating water reabsorption and does not involve changes in white blood cell count. Consequently, an increase in WBC count wouldn't be an expected therapeutic response to desmopressin for diabetes insipidus.
Correct Answer is ["60"]
Explanation
Step 1: Determine the Lidocaine Concentration
- The solution contains 2 grams (2000 mg) of lidocaine in 500 mL.
- To find the amount of lidocaine per mL:
2000 mg ÷ 500 mL = 4 mg/mL
Step 2: Calculate the Total Dose per Hour
- The prescribed infusion rate is 4 mg per minute.
- In 1 hour (60 minutes), the total dose is:
4 mg/min × 60 min = 240 mg/hr
Step 3: Determine the Infusion Rate in mL/hr
- Since each mL contains 4 mg of lidocaine:
240 mg ÷ 4 mg/mL = 60 mL/hr
The nurse should set the IV pump to 60 mL/hr for the continuous IV infusion of lidocaine at a rate of 4 mg/min.
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