A client receives a prescription for dalteparin 2500 units subcutaneously 2 hours before a scheduled procedure. The medication is available in a 5000 units/0.2 mL prefilled syringe. How many mL should the nurse administer? (Enter numeric value only)

Answer and Explanation

The Correct Answer is ["0.1"]

To find out how many mL of dalteparin are needed for 2500 units, we need to use a proportion formula:

- (units of dalteparin)/(mL of dalteparin) = (units of dalteparin prescribed)/(mL of dalteparin needed)

- We can plug in the values that we know into the formula:

- (5000 units)/(0.2 mL) = (2500 units)/(x mL)

- We can cross-multiply and solve for x:

- 5000x = 2500 x 0.2

- x = (2500 x 0.2)/5000

- x = 0.1

- Therefore, the nurse should administer 0.1 mL of dalteparin to deliver 2500 units of the medication.

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Correct Answer is D

Explanation

Choice A reason: Recent use of other antidepressants is important to know, as duloxetine is a serotonin-norepinephrine reuptake inhibitor (SNRI) that can interact with other antidepressants, especially monoamine oxidase inhibitors (MAOIs) and selective serotonin reuptake inhibitors (SSRIs). However, this information is not as important as liver function laboratory results, as duloxetine can cause hepatotoxicity in some clients.

Choice B reason: Weight change in the last month is relevant to monitor, as duloxetine can cause weight loss or gain in some clients. However, this information is not as important as liver function laboratory results, as duloxetine can cause liver damage in some clients.

Choice C reason: Family history of mental illness is useful to assess, as duloxetine may be more effective or less effective in clients with certain genetic factors. However, this information is not as important as liver function laboratory results, as duloxetine can cause liver failure in some clients.

Choice D reason: Liver function laboratory results are most important to obtain, as duloxetine is metabolized by the liver and can cause hepatotoxicity in some clients. The nurse should monitor the client's liver enzymes and bilirubin levels before and during treatment with duloxetine and report any signs of liver impairment, such as jaundice, dark urine, abdominal pain, or fatigue.

A. Immediately after completion of the IV dose and 30 minutes before the next administration of the medication. B. One hour after completion of the IV dose and one hour before the next administration of the medication. C. Thirty minutes into the administration of the IV dose and 30 minutes before the next administration of the medication. D. Two hours after completion of the IV dose and two hours before the next administration of the medication.

Correct Answer is A

Explanation

Choice A reason: This is the best option to measure the peak and trough levels of vancomycin, as it reflects the highest and lowest concentrations of the drug in the blood. The peak level indicates the efficacy and potential toxicity of vancomycin, while the trough level indicates the clearance and potential subtherapeutic effect of vancomycin. The peak level should be drawn immediately after completion of the IV dose, as it takes about 30 minutes for vancomycin to reach its maximum concentration in the blood. The trough level should be drawn 30 minutes before the next administration of the medication, as it represents the lowest concentration of vancomycin in the blood before it is replenished by another dose.

Choice B reason: This is not a good option to measure the peak and trough levels of vancomycin, as it may not capture the true highest and lowest concentrations of the drug in the blood. The peak level may be lower than expected, as it takes about 30 minutes for vancomycin to reach its maximum concentration in the blood. The trough level may be higher than expected, as it is drawn too close to the next administration of the medication.

Choice C reason: This is not a good option to measure the peak and trough levels of vancomycin, as it does not reflect the highest and lowest concentrations of the drug in the blood. The peak level is drawn too early, as vancomycin has not reached its maximum concentration in the blood yet. The trough level is drawn too late, as vancomycin has already started to decline in the blood.

Choice D reason: This is not a good option to measure the peak and trough levels of vancomycin, as it may miss the highest and lowest concentrations of the drug in the blood. The peak level is drawn too late, as vancomycin may have already started to decline in the blood. The trough level is drawn too early, as vancomycin may have not reached its minimum concentration in the blood yet.

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A client receives a prescription for dalteparin 2500 units subcutaneously 2 hours before a scheduled procedure. The medication is available in a 5000 units/0.2 mL prefilled syringe. How many mL should the nurse administer? (Enter numeric value only)

Nursing Test Bank

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