A nursing student asks why albuterol,which is selective for beta₂ receptors,causes an increased heart rate in some patients. How should the nurse respond? A) "Adrenergic agonists can lose their selectivity when given at higher doses." B) "Bronchodilation lowers blood pressure, which causes a reflex tachycardia." C) "Some patients metabolize the drug differently and have unusual side effects." D) "Systemic effects are intensified with inhaled doses."

Question

Quizplus · Accepted Answer

Although albuterol affects the beta₂ receptors,at higher doses it may also activate beta₁ receptors,causing an increase in the heart rate. Bronchodilation does not lower the blood pressure,and activation of beta₁ receptors actually may increase it. Tachycardia is a common side effect. The inhaled route reduces the likelihood of systemic side effects.

A Nursing Student Asks Why Albuterol,which Is Selective for Beta2

A Nursing Student Asks Why Albuterol,which Is Selective for Beta₂