Final answer:
A therapeutic response in a client who is having a thyroid storm after being administered propranolol by IV bolus would include a decrease in heart rate.
Step-by-step explanation:
A therapeutic response in a client who is having a thyroid storm after being administered propranolol by IV bolus would include a decrease in heart rate. Propranolol is a beta blocker that blocks the beta-1 receptors, leading to a decrease in heart rate. Therefore, if the client's heart rate decreases after receiving the medication, it indicates a therapeutic response.