Quiz: Types of Insulin: Pharmacokinetics — 9 perguntas

1. What are antithyroid drugs?

A. Medications that stimulate thyroid hormone production to treat hypothyroidism.

B. Drugs that inhibit the synthesis or release of thyroid hormones to treat hyperthyroidism.

C. Agents that increase iodine uptake in the thyroid gland to enhance hormone synthesis.

D. Supplements used to replace deficient thyroid hormones in hypothyroidism.

Answer: (B)

Explicação

Antithyroid drugs are medications such as methimazole and propylthiouracil that inhibit the synthesis and release of thyroid hormones, thereby reducing hyperthyroid symptoms. They are used primarily in the treatment of hyperthyroidism, including Graves’ disease.

2. Which insulin preparation is characterized by an onset of approximately 10-30 minutes, a peak at 30 minutes to 3 hours, and a duration of 3 to 6 hours?

A. Regular insulin

B. Insulin lispro

C. NPH insulin

D. Insulin glargine

Answer: (B)

Explicação

Insulin lispro, a rapid-acting insulin, has an onset of 10-30 minutes, peaks around 30 minutes to 3 hours, and lasts 3-6 hours, making it suitable for mealtime control.

3. Which of the following insulin preparations is classified as long-acting?

A. Regular insulin

B. Insulin glargine

C. Insulin lispro

D. NPH insulin

Answer: (B)

Explicação

Insulin glargine is classified as a long-acting insulin, providing a steady, peakless action over 24 hours, suitable for basal insulin coverage. Lispro is rapid-acting, regular insulin is short-acting, and NPH is intermediate-acting.

4. What is the primary characteristic that differentiates long-acting insulins like glargine and detemir from other types?

A. They have a rapid onset and short duration

B. They provide a steady, peakless basal insulin over 24 hours

C. They are administered intravenously only

D. They require multiple injections daily due to short action

Answer: (B)

Explicação

Long-acting insulins such as glargine and detemir are designed to provide a steady, peakless insulin level over approximately 24 hours, mimicking basal insulin secretion.

5. What is the primary role of insulin in its mechanism of action?

A. To increase blood glucose levels

B. To stimulate gluconeogenesis in the liver

C. To inhibit lipogenesis in adipose tissue

D. To facilitate cellular uptake and storage of glucose

Answer: (D)

Explicação

Insulin's main function is to promote the uptake and storage of glucose into cells, particularly in muscle and adipose tissue, by binding to its receptor and triggering GLUT4 translocation. This action lowers blood glucose levels and is essential for maintaining glucose homeostasis.

6. Which insulin type is typically used for basal insulin coverage because of its long, stable action profile?

A. Regular insulin

B. Aspart insulin

C. Insulin glargine

D. NPH insulin

Answer: (C)

Explicação

Insulin glargine, a long-acting insulin, provides a steady basal insulin level over 24 hours, ideal for basal coverage in diabetes management.

7. Which pharmacokinetic parameter describes how quickly insulin begins to work after administration?

A. Onset

B. Peak

C. Duration

D. Bioavailability

Answer: (A)

Explicação

Onset refers to the time it takes for insulin to start working after administration, which is critical for timing with meals or basal needs.

8. Among the following, which insulin preparation typically has an onset of approximately 30 minutes, peaks at 2-5 hours, and lasts for 5-8 hours?

A. NPH insulin

B. Regular insulin

C. Insulin glargine

D. Insulin detemir

Answer: (B)

Explicação

Regular insulin has an onset of about 30 minutes, peaks between 2-5 hours, and lasts roughly 5-8 hours, making it suitable for managing acute hyperglycemia.

9. What is a key clinical consideration when choosing an insulin preparation for a patient?

A. The insulin's onset, peak, and duration profiles should match the patient's blood glucose patterns

B. Insulins with the shortest duration are always preferred for basal coverage

C. All insulins have the same pharmacokinetic profiles, so choice is not important

D. Only rapid-acting insulins are used in diabetes management

Answer: (A)

Explicação

Selecting an insulin depends on matching its pharmacokinetic profile—onset, peak, duration—to the patient's blood glucose fluctuations for optimal control.