A client is receiving heparin IV at a rate of 1,800 units/hour. The IV solution is labeled, "Heparin sodium 20,000 units in 5% dextrose Injection 500 mL." After receiving the partial thromboplastin time (PTT) result, the healthcare provider prescribes an increase of 5 ml/hour in the IV rate. The nurse should set the infusion pump to deliver how many ml/hour? (Enter numeric value only.)

First, we need to find out how many mL/hr the infusion pump is currently delivering. Given: The client is receiving 1,800 units/hour of heparin. The available medication is 20,000 units/500 mL. We can set up the proportion as follows: 1,800 units/ x mL ​= 20,000 units​/500 mL Solving for x gives us the volume in mL that the infusion pump is currently delivering per hour. Cross-multiplying and solving for x: X = 1,800 units×500 mL​/20,000 units After performing the calculation, we find that x equals 45 mL/hr. Given that the healthcare provider prescribes an increase of 5 mL/hr in the IV rate, the nurse should set the infusion pump to deliver: New rate (mL/hr) = Current rate (mL/hr) + Increase (mL/hr) = 45 mL/hr+5 mL/hr After performing the calculation, we find that the new rate equals 50 mL/hr. So, the nurse should set the infusion pump to deliver 50 mL/hr.