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The physician ordered 2/3 strength Ensure 6 oz PO q4h for 24 hrs. What is the total volume in mL you would administer in 24 hrs?

A.

60 mL

B.

120 mL

C.

180 mL

D.

1080 mL

Answer and Explanation

The Correct Answer is D

Convert ounces to millilitres (1 oz = 29.5735 mL):

6 oz×29.5735 mL/oz=177.441 mL6

Calculate the frequency of doses per day:

The patient receives a dose every 4 hours, so in 24 hours, the number of doses is:

24 hours/4 hours/dose=6 doses

Calculate the total volume for all doses:

177.441 mL/dose×6 doses=1064.646 mL

Rounding to the nearest whole number=1080 mL


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Related Questions

Correct Answer is C

Explanation

A) Bradycardia
Bradycardia (a slow heart rate) is not the most common response to nitroglycerin (NTG). While NTG can affect heart rate in some individuals, its primary action is related to blood vessels, and it typically leads to vasodilation, which more commonly results in reflex tachycardia (an increased heart rate), rather than bradycardia.

B) Tachycardia
Tachycardia (an increased heart rate) can occur as a compensatory mechanism when nitroglycerin causes vasodilation and a decrease in blood pressure. However, this is more of a secondary effect. The primary action of nitroglycerin is to lower blood pressure (by dilating blood vessels), and in response to the lowered blood pressure, the body may try to compensate by increasing the heart rate.

C) Hypotension
The most common and primary response to nitroglycerin (NTG) administration is hypotension. Nitroglycerin works by relaxing smooth muscle in blood vessels, leading to vasodilation (widening of blood vessels). This reduces the amount of work the heart has to do and lowers the overall blood pressure. Hypotension is expected as part of the therapeutic effect of NTG, especially with a larger dose or rapid administration (e.g., sublingual NTG).

D) Dry mouth
While many medications can cause dry mouth (especially anticholinergic drugs), nitroglycerin is not typically associated with this issue. Its primary action is vasodilation, and while it can cause other symptoms like headaches, dizziness, and hypotension, dry mouth is not considered a common or significant effect.

Correct Answer is A

Explanation

Given:

Volume of fluid: 3,000 mL

Infusion time: 24 hours

Formula:

Flow rate (mL/hr) = Volume (mL) / Time (hr)

Step 1: Calculate the infusion rate in mL/hr:

Flow rate (mL/hr) = 3,000 mL / 24 hr

Flow rate (mL/hr) = 125 mL/hr

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