A nurse is preparing to administer morphine 7.5 mg subcutaneous. Available is morphine injection 10 mg/mL. How many mL should the nurse administer?
(Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.75"]
To calculate the volume of morphine injection that the nurse should administer, we can use the following steps:
Determine the volume to be administered:
We have a concentration of 10 mg/mL.
7.5 mg ÷ 10 mg/mL = 0.75 mL
Therefore, the nurse should administer 0.75 mL of morphine injection subcutaneously.
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Related Questions
Correct Answer is D
Explanation
Choice A reason: This is incorrect because a dry cough is not a common or serious side effect of hydralazine. A dry cough is more likely to occur with angiotensin-converting enzyme (ACE) inhibitors, which are another class of antihypertensive drugs.
Choice B reason: This is incorrect because hydralazine does not cause a low heart rate. In fact, hydralazine can cause a reflex increase in heart rate as a result of lowering the blood pressure. This is why hydralazine is often given with a beta-blocker, which can slow down the heart rate.
Choice C reason: This is incorrect because hydralazine does not interact with birth control. However, the nurse should advise the client to use effective contraception while taking hydralazine, as this medication can cause fetal harm if used during pregnancy.
Choice D reason: This is correct because hydralazine can cause orthostatic hypotension, which is a sudden drop in blood pressure when changing positions. This can lead to dizziness, fainting, and falls. The nurse should instruct the client to avoid getting up too quickly and to ask for assistance if needed.
Correct Answer is ["125"]
Explanation
To calculate the rate at which the nurse should set the IV pump to deliver dextrose 5% in 0.45% sodium chloride over 24 hours, we can use the following steps:
Given:
Total IV fluid volume: 3 L
Infusion duration: 24 hours
Step 1: Convert the total IV fluid volume from liters (L) to milliliters (mL)
Total volume = 3 L × 1000 mL/L
Total volume = 3000 mL
Step 2: Calculate the rate of infusion per hour
Rate = Total volume / Infusion duration
Rate = 3000 mL / 24 hr
Rate ≈ 125 mL/hr
Rounding to the nearest whole number:
Rate ≈ 125 mL/hr
Therefore, the nurse should set the IV pump to deliver approximately 125 mL/hr for the infusion of dextrose 5% in 0.45% sodium chloride over 24 hours.
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