Final answer:
The client should receive 51.45 milligrams per hour of theophylline infusion.
Step-by-step explanation:
To calculate the number of milligrams the client should receive per hour, we need to first calculate the hourly infusion rate of theophylline. The infusion rate is calculated by multiplying the client's weight by the dosage rate. In this case, the dosage rate is 0.7mg/kg/hr.
So, for a client weighing 73.5 kg, the hourly infusion rate would be:
0.7mg/kg/hr x 73.5 kg = 51.45 mg/hr
Therefore, the client should receive 51.45 milligrams per hour.