Long-acting insulin is primarily used for basal control. Which option reflects this use most accurately?

Long-acting insulin is primarily used for basal control. Which option reflects this use most accurately?

• A. Post-meal control
• B. Basal control at bedtime
• C. Correcting hyperglycemia
• D. Hydration

Answer: (B)

Long-acting insulin provides a steady background level of insulin to keep blood glucose stable during fasting periods and between meals. This basal coverage is most impactful overnight, helping prevent fasting hyperglycemia. Because it acts slowly and lasts across the day, it doesn’t address the sharp glucose rise after meals—those needs are met with rapid-acting insulin given at mealtimes. It also isn’t used just to correct an already high glucose level. Hydration is unrelated to the insulin’s blood glucose–lowering effect. Therefore, administering long-acting insulin for basal control at bedtime best reflects its purpose, supplying ongoing background insulin overnight.

Long-acting insulin provides a steady background level of insulin to keep blood glucose stable during fasting periods and between meals. This basal coverage is most impactful overnight, helping prevent fasting hyperglycemia. Because it acts slowly and lasts across the day, it doesn’t address the sharp glucose rise after meals—those needs are met with rapid-acting insulin given at mealtimes. It also isn’t used just to correct an already high glucose level. Hydration is unrelated to the insulin’s blood glucose–lowering effect. Therefore, administering long-acting insulin for basal control at bedtime best reflects its purpose, supplying ongoing background insulin overnight.