Try Naxlex NCLEX-RN (Free-Trial)

Calculate the flow rate I mL/hr. and Units/hr. (Equipment used is programmable in whole mL/hr and Show all work) Order: 25,000 units of Heparin in 250 mL to infuse at 11 mL/hr. Calculate rate in units/hr.

A.

900 units/hr

B.

1,000 units/hr

C.

2.000 units/hr

D.

1,100 units/hr

Answer and Explanation

The Correct Answer is D

Given:

Total Heparin in solution: 25,000 units

Volume of solution: 250 mL

Infusion rate: 11 mL/hr

 

Step 1: Calculate the concentration of Heparin in the solution:

Concentration (units/mL) = Total Heparin (units) / Volume of solution (mL)

Concentration (units/mL) = 25,000 units / 250 mL

Concentration (units/mL) = 100 units/mL

 

Step 2: Calculate the infusion rate in units/hr:

Infusion rate (units/hr) = Infusion rate (mL/hr) x Concentration (units/mL)

Infusion rate (units/hr) = 11 mL/hr x 100 units/mL

Infusion rate (units/hr) = 1100 units/hr


Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Free Nursing Study Resources

Related Questions

Correct Answer is D

Explanation

Convert the dosage to mcg per hour:

55 mcg/min × 60 min = 3300 mcg/hr

Determine the concentration of nitroglycerin available:

The concentration is 25 mg per 250 mL, which converts to 100 mcg/mL.

Calculate the flow rate in mL per hour using the dosage and concentration:

Flowrate(mL/hr)=(Dose(mcg/hr)/Concentration(mcg/mL))

(3300mcg/hr100mcg/mL)=33mL/hr

Correct Answer is B

Explanation

A) 600 g
This is incorrect because it represents the quantity 600 grams, which is a significantly larger amount than "six hundredth." The phrase "six hundredth" refers to six out of 100, or 0.06 in decimal form. In the metric system, 600 grams would indicate a much higher quantity, far from what is requested. Therefore, this option does not fit the definition of "six hundredth."

B) 0.06 g
The term "six hundredth" refers to six parts out of one hundred, which is mathematically expressed as 0.06. In the metric system, it is common to represent small quantities of mass, such as grams, in decimal form. The number 0.06 is precisely six hundredths, and the proper representation for this in terms of grams is 0.06 g. This is the correct scientific notation for the given quantity, as it accurately reflects six hundredths of a gram.

C) 0.006 g
This is incorrect because 0.006 grams represents six thousandths, not six hundredths. In decimal notation, six thousandths would be represented as 0.006, which is one order of magnitude smaller than six hundredths. The difference between 0.006 and 0.06 is significant. While both numbers are small, 0.006 would refer to an even smaller quantity than 0.06, which is not in line with the intended meaning of "six hundredth."

D) 0.6 g
While 0.6 grams may appear similar at first glance, it represents six-tenths (6/10), not six hundredths (6/100). The number 0.6 is much larger than 0.06, and it would be used to indicate a weight that is 60% of a gram, not a small fraction like six hundredths.

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Register