A patient diagnosed with diabetes is being discharge to home with regular insulin and insulin glargine (Lantus). During discharge teaching the patient asks what is the difference between the 2 types of insulin. What is your best response?

A. "Insulin glargine will only be given if her blood sugars are higher than 200 mg/dL.": Glargine is a long-acting insulin administered on a fixed schedule, not based on immediate blood glucose readings. Using it only for high readings would prevent stable baseline glucose control and increase the risk of hyperglycemia. B. "Insulin glargine is the same as regular insulin, and she will require several injections during the day.": Glargine differs from regular insulin because it has a slow, steady release over 24 hours and is usually given once daily. Confusing it with regular insulin could lead to dosing errors and inadequate glucose management. C. "Insulin glargine helps to manage elevated blood sugars after she eats, and she will require injections three times a day.": Postprandial glucose is primarily managed by rapid-acting or short-acting insulin, not glargine. Glargine provides basal coverage rather than mealtime glucose control, so multiple daily injections for meals are unnecessary. D. "Insulin glargine will help control her blood sugar for 24 hours and will need to be given one time per day.": Glargine is a long-acting insulin that maintains steady basal insulin levels for approximately 24 hours. It is administered once daily to stabilize fasting and baseline blood glucose, complementing rapid-acting insulin for mealtime coverage.