A patient/client weighs 152 lb. Available is 20,000 units of heparin in 1000 mL of D5W. The physician orders the following: heparin sodium IV bolus of 40 units/kg and start the drip at 10 units/kg/hour. What is the correct IV rate in milliliter per hour? Round to the nearest whole number.
A) 20
B) 25
C) 30
D) 35

Question

Quizplus · Accepted Answer

When solving any problem, first check that the order and the supply are in the same weight measure. Begin by converting pounds to kilograms (1 kg = 2.2 lb): 152 lb/2.2 = 69 kg. Determine the bolus dose: 69 kg * 10 units/kg/hour = 690 units/hour. Estimate the amount to give. Round to the nearest whole number. Formula Method: 690 units/hour/20,000 units *1000 mL = 34.5 mL/hour = 35 mL/hour. Proportion (Ratios): 1000 mL : 20,000 units :: x mL : 690 units; 20,000x = 690,000/20,000 = 35 mL/hour. Proportion (Fractions): 1000 mL/20,000 units = x mL/690 units; 20,000x = 690,000/20,000 = 35 mL/hour. Use a conversion factor for dimensional analysis. Dimensional Analysis: 1000 mL/20,000 units *10 units/kg/hour *152 lb * 1 kg/2.2 lb = 1,520,000/44,000 = 35 mL/hour.

A Patient/client Weighs 152 Lb