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)
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["42"]
Explanation
The correct answer is 42gtt/min.
To calculate the infusion rate, use the formula:
gtt/min = (volume in mL x drop factor in gtt/mL) / time in min
Plug in the given values:
gtt/min = (500 mL x 10 gtt/mL) / 120 min
gtt/min = 5000 gtt / 120 min
gtt/min = 41.67 gtt/min
Round to the nearest whole number:
gtt/min = 42 gtt/min
Correct Answer is A
Explanation
Choice A reason: Zolpidem is a hypnotic drug that induces sleep by enhancing the activity of gamma-aminobutyric acid (GABA), a neurotransmitter that inhibits brain activity. Zolpidem is used to treat insomnia, or difficulty falling asleep or staying asleep. Zolpidem should be taken only at bedtime, when the client is ready to go to sleep and can devote at least seven to eight hours for uninterrupted sleep. Taking zolpidem during the day can cause excessive sedation, drowsiness, confusion, memory loss, and impaired coordination. Therefore, the nurse should encourage the client to wait until bedtime to take the medication and avoid daytime naps.
Choice B reason: Reminding the client to drink plenty of fluids when taking the medication is not an action that the nurse should take in this situation, but rather a general recommendation that applies to most medications. Drinking fluids can help to prevent dehydration, flush out toxins, and maintain kidney function. However, drinking fluids is not specific to zolpidem and does not affect its absorption or metabolism.
Choice C reason: Advising the client to take the medication with the noon meal is not an action that the nurse should take in this situation, but rather a harmful suggestion that can reduce the effectiveness of zolpidem and increase its side effects. Taking zolpidem with food can delay its onset of action and make it less potent. Taking zolpidem at noon can also interfere with the client's circadian rhythm, or natural sleep-wake cycle, and cause daytime sleepiness and nighttime insomnia.
Choice D reason: Explaining that the client needs to allow for sleep time of at least two hours is not an action that the nurse should take in this situation, but rather an inaccurate and insufficient information that can mislead the client and endanger their safety. Zolpidem has a half-life of about two hours, which means that half of its dose is eliminated from the body in two hours. However, this does not mean that its effects wear off in two hours. Zolpidem can still cause residual sedation and impairment for several hours after taking it. The client needs to allow for sleep time of at least seven to eight hours when taking zolpidem, not just two hours.
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