ATI n300 Dosage calculation ( 20 Questions)
A client is to receive a continuous infusion of IV Insulin at 6 units per hour. Pharmacy delivers the medication that has a concentration of 200 units of regular insulin in 250 mL of NSS. At what rate should the nurse set the IV pump? (Use a preceding zero If it applies. Do not use trailing zeros. Round to the nearest tenth)
Correct Answer: 7.5
Identify the Desired Dose:
The client needs 6 units of insulin per hour.
Identify the Available Concentration:
The solution has 200 units of insulin in 250 mL of NSS.
Set up the Proportion:
(Desired Dose / Available Concentration) = (Rate (mL/hr) / Volume (mL))
(6 units / 200 units) = (X mL / 250 mL)
Solve for X (the Rate):
Cross-multiply: 6 units x 250 mL = 200 units x X mL
1500 = 200X
X = 1500 / 200
X = 7.5 mL/hr
Practice Test
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