A client diagnosed with asthma asks the nurse why an albuterol (Proventil)inhaler is better than isoproterenol (Isuprel).The nurse's response should be based on the physiologic concept that isoproterenol affects which receptors?

Question

Quizplus · Accepted Answer

Isoproterenol affects both beta-1 and beta-2 receptors. While beta-2 receptor activation causes bronchodilation in the lungs, beta-1 receptor activation can cause increased heart rate and contractility, which may not be desirable in some patients with asthma. Albuterol specifically targets the beta-2 receptors and has less effect on the beta-1 receptors, making it a preferred choice for treating asthma.

A Client Diagnosed with Asthma Asks the Nurse Why an Albuterol