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Heparin is supplied in bags that have 25,000 units / 250 mL. What is the concentration of Heparin?

A.

1 unit per 1mL

B.

10 units per 1 mL

C.

100 units per 1 mL

D.

1000 units per 1 mL

Answer and Explanation

The Correct Answer is C

A.    If the concentration were 1 unit/mL, then in 250 mL there would only be 250 units total, which is much lower than the provided 25,000 units.
B.    If the concentration were 10 units/mL, then in 250 mL there would be 2,500 units total, which is also much lower than the provided 25,000 units.
C.    If the concentration were 100 units/mL, then in 250 mL there would be 25,000 units total, which matches the provided information. However, while this seems plausible, it is not the answer we calculated. 
D.    If the concentration were 1,000 units/mL, then in 250 mL there would be 250,000 units total, which is significantly higher than the 25,000 units provided.
 


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Related Questions

Correct Answer is ["7"]

Explanation

(desired dose * volume of solution) / (concentration of drug * time) = rate.

For an infusion of 7 units per hour with a concentration of 100 units in 100 mL, the calculation would be: (7 units/hour * 100 mL) / (100 units * 1 hour) = 7 mL/hour.

Therefore, the nurse should set the IV pump to 7 mL per hour to deliver a continuous infusion of insulin at the prescribed rate.

Correct Answer is B

Explanation

A. A calcaneal spur, or heel spur, is a bony growth on the heel bone. This condition is primarily related to foot pain and does not have a direct link to the risk of stroke. It is not relevant in assessing stroke risk.
B. This elevated blood pressure reading indicates hypertension, which is a significant risk factor for both ischemic and hemorrhagic strokes. Chronic high blood pressure can lead to damage of the blood vessels, making them more susceptible to rupture, thus increasing the risk of a hemorrhagic stroke.
C. A glycosylated hemoglobin (HbA1c) level of 5.9% indicates well-managed diabetes, typically within the normal range for most individuals. While uncontrolled diabetes is a risk factor for vascular disease, this level suggests adequate control and does not specifically indicate an increased risk for a hemorrhagic stroke.
D. A recent endoscopy itself does not indicate a direct risk for a hemorrhagic stroke. However, if the endoscopy was performed due to gastrointestinal bleeding or if it resulted in complications, there could be indirect implications, but this option alone does not signify an increased risk for hemorrhagic stroke.

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