A patient/client weighs 200 lb. Available is 25,000 units of heparin in 1000 mL of D5W. The physician orders the following: heparin sodium IV bolus of 80 units/kg and start the drip at 14 units/kg/hour. What is the correct IV rate in milliliters per hour? Round to the nearest whole number.
A) 51
B) 52
C) 53
D) 54

Question

Quizplus · Accepted Answer

When solving any problem, first check that the order and the supply are in the same weight measure. For this problem, begin by converting pounds to kilograms (1 kg = 2.2 lb): 200 lb/2.2 = 90.9 kg. Determine the bolus dose: 90.9 kg * 14 units/kg/hour = 1272.73 units/hour. Estimate the amount to give. Round to the nearest whole number. Formula Method: 1272.73 units/hour ÷ 25,000 units * 1000 mL = 50.9 mL/hour = 51 mL/hour. Proportion (Ratios): 1000 mL : 25,000 units :: x mL : 1272.73 units; 25,000x = 1,272,730/25,000 = 51 mL/hour. Proportion (Fractions): 1000 mL/25,000 units = x mL/1272.73 units; 25,000 units x = 1,272,730/25,000 = 51 mL/hour. Use a conversion factor for dimensional analysis. Dimensional Analysis: 1000 mL/25,000 units *14 units/kg/hour *90.9 kg * 200 lb * 1 kg/2.2 lb = 1000 mL *14 * 2000 *1/25,000 * 1 * 2.2 = 2,800,000/55,000 = 51 mL/hour.

A Patient/client Weighs 200 Lb