The nurse explains that which beta blocker category is preferred for treating hypertension?

• A. Beta1 blocker
• B. Beta2 blocker
• C. Beta1 and beta2 blockers
• D. Beta2 and beta3 blockers

Answer: (C)

The main idea here is how beta blockers work and what their receptor targets mean for blood pressure control. Beta blockers reduce blood pressure by blocking sympathetic stimulation of the heart and kidneys. They come in two broad categories: selective beta1 blockers (which mainly affect the heart) and nonselective beta blockers (which block both beta1 and beta2 receptors).

Blocking both beta1 and beta2 receptors provides a broader heart and vascular effect: lowering heart rate and contractility (beta1) and reducing vasodilatory beta2 activity elsewhere, which in the context of hypertension can contribute to lowering peripheral resistance and renin release. That broader blockade is why, in a general hypertension treatment context, the category that includes both beta1 and beta2 blockade is described as preferred.

Keep in mind that this broader effect can cause more side effects, notably bronchospasm in people with reactive airways disorders, because beta2 blockade reduces bronchodilation. Therefore, in patients with asthma or COPD, a selective beta1 blocker is often favored to minimize pulmonary risks, while in patients without airway disease, nonselective beta blockers can be an effective option.