Free AANPCB Pharmacology Questions and Answers

Question 1

What is the mechanism of action of beta-blockers?

Accepted Answer

Reduce heart rate and myocardial contractility

Answer

Beta-blockers exert their therapeutic effects by blocking beta-adrenergic receptors, primarily beta-1 receptors in the heart. This blockade leads to a reduction in heart rate, decreased myocardial contractility (the force of heart muscle contraction), and consequently, a decrease in cardiac output and blood pressure. They are used to treat conditions like hypertension, angina, and arrhythmias by reducing the heart's workload.

Question 2

Which antibiotic is contraindicated in children under 8 years old due to potential tooth discoloration?

Accepted Answer

Tetracycline

Answer

Tetracycline antibiotics are contraindicated in children under 8 years old and in pregnant or breastfeeding women because they can cause permanent discoloration of developing teeth (yellow-gray-brown) and inhibit bone growth. This is due to their ability to chelate calcium and deposit in calcifying tissues. This side effect is a significant concern for pediatric dental health.

Question 3

What is the first-line pharmacological treatment for Type 2 diabetes mellitus?

Accepted Answer

Metformin

Answer

Metformin is widely recognized as the first-line pharmacological treatment for Type 2 diabetes mellitus, especially in overweight or obese patients. It works primarily by decreasing hepatic glucose production and improving insulin sensitivity in peripheral tissues. Its efficacy, favorable safety profile, and low risk of hypoglycemia make it the preferred initial agent for managing blood glucose levels.

Question 4

Which medication class is commonly used as a first-line treatment for hyperlipidemia?

Accepted Answer

Statins

Answer

Statins (HMG-CoA reductase inhibitors) are the most commonly used and highly effective first-line medication class for treating hyperlipidemia, particularly elevated LDL cholesterol. They work by inhibiting an enzyme involved in cholesterol synthesis in the liver, leading to a reduction in circulating cholesterol levels. This action significantly decreases the risk of cardiovascular events.

Question 5

In managing an acute asthma exacerbation, which medication is used for rapid relief?

Accepted Answer

Short-acting beta-agonists (SABAs)

Answer

Short-acting beta-agonists (SABAs), such as albuterol, are the cornerstone of rapid relief medication for acute asthma exacerbations. They work by relaxing the smooth muscles of the airways, leading to bronchodilation and quick improvement in symptoms like wheezing and shortness of breath. Long-acting beta-agonists and inhaled corticosteroids are for long-term control, not acute relief.

AANPCB - American Academy of Nurse Practitioners Certification Board Practice Test

AANPCB - American Academy of Nurse Practitioners Certification Board Practice Test

Free AANPCB Pharmacology Questions and Answers