Which insulin has the late onset of action, longer duration of action, and has no pronounced peak?
**Core Concept**
Glucose homeostasis is crucial for maintaining normal blood glucose levels, and insulin plays a vital role in regulating it. Insulins with varying onset of action, duration of action, and peak effects are used to manage different types of diabetes.
**Why the Correct Answer is Right**
Glargine insulin is a long-acting insulin analog that is designed to provide a steady, flat glucose-lowering effect over a prolonged period. It has a late onset of action, with a peak effect that is significantly reduced or eliminated, making it suitable for use in basal insulin regimens. Glargine insulin is a modified form of human insulin that is bound to a large fatty acid molecule, which slows its absorption and prolongs its action. This results in a more stable glucose-lowering effect and reduced risk of hypoglycemia compared to other insulins.
**Why Each Wrong Option is Incorrect**
**Option A:** NPH insulin is an intermediate-acting insulin that has a more pronounced peak effect compared to Glargine insulin. It is not suitable for use as a basal insulin due to its shorter duration of action and risk of hypoglycemia.
**Option B:** Regular insulin is a short-acting insulin that has a rapid onset of action and a pronounced peak effect. It is not suitable for use as a basal insulin due to its short duration of action and risk of hypoglycemia.
**Option C:** Detemir insulin is another long-acting insulin analog that has a more variable absorption profile compared to Glargine insulin. While it has a reduced peak effect, it is not as flat or stable as Glargine insulin.
**Clinical Pearl / High-Yield Fact**
When choosing a basal insulin, it's essential to consider the patient's lifestyle, diet, and glucose variability. Glargine insulin is a good option for patients who require a stable glucose-lowering effect and have a high risk of hypoglycemia.
**Correct Answer:** C. Detemir insulin is another long-acting insulin analog that has a more variable absorption profile compared to Glargine insulin. While it has a reduced peak effect, it is not as flat or stable as Glargine insulin.