The healthcare provider prescribes and IV solution of regular insulin (Humulin-R) 100 units in 250 ml of 0.45% saline to infuse at 12 units/hour. The nurse should program the infusion pump to deliver how many ml/hour?
The Correct Answer is ["30"]
First, we need to find the concentration of insulin in the IV solution, which is the ratio of insulin units to saline volume. To do this, we use the given information that the IV solution contains 100 units in 250 ml. So, we divide 100 by 250 and get 0.4 units/ml.
Next, we need to calculate the infusion rate in ml/hour for the ordered dose of 12 units/hour. To do this, we use the ratio of insulin units to saline volume, which is 0.4 units/ml. So, we set up a proportion as follows:
0.4/1=12/x
To solve for x, we cross-multiply and get 0.4 x = 12. Then, we divide both sides by 0.4 and get x = 30. So, the infusion rate is 30 ml/hour.
Therefore, the nurse should program the infusion pump to deliver 30 ml/hour..
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: This is the correct answer.According to the rule of nines, each leg accounts for 18% of the total body surface area, and the anterior surface of each leg accounts for half of that, or 9%. Therefore, the patient has partial-thickness burns on 9% + 9% = 18% of the body surface area.
Choice B reason: This is incorrect. This would be the case if the patient had partial-thickness burns on the anterior and posterior surfaces of both legs, as well as the head and neck, which is not given in the question.
Choice C reason: This is incorrect. This would be the case if the patient had partial-thickness burns on the anterior surface of only one leg, which is not given in the question.
Choice D reason: This is incorrect. This would be the case if the patient had partial-thickness burns on the anterior and posterior surfaces of both legs, which is not given in the question.
Correct Answer is C
Explanation
Choice A: 18%. This is not the correct percentage, as it only accounts for one lower extremity. According to the rule of nines, each lower extremity accounts for 9% of body surface area on both anterior and posterior sides, so both lower extremities would account for 18% x 2 = 36%.
Choice B: 27%. This is not the correct percentage, as it only accounts for one and a half lower extremities. According to the rule of nines, each lower extremity accounts for 9% of body surface area on both anterior and posterior sides, so one and a half lower extremities would account for 9% x 3 = 27%.
Choice C: 36%. This is the correct percentage, as it accounts for both lower extremities. According to the rule of nines, each lower extremity accounts for 9% of body surface area on both anterior and posterior sides, so both lower extremities would account for 9% x 4 = 36%.
Choice D: 45%. This is not the correct percentage, as it accounts for more than both lower extremities. According to the rule of nines, each lower extremity accounts for 9% of body surface area on both anterior and posterior sides, so more than both lower extremities would account for more than 9% x 4 = 36%.
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