The patient asks the nurse about the difference between using an oral form of albuterol and the inhaled form. Which of these statements is accurate about the inhaled form of albuterol?

Choice A rationale The inhaled form of albuterol delivers the drug directly to the bronchial smooth muscle receptors in the lungs, achieving therapeutic concentration locally with a smaller overall systemic dose. In contrast, the oral form must be absorbed and pass through the liver (first-pass metabolism), often requiring a larger total dose to achieve the desired effect. Choice B rationale Tolerance (a reduced response to the drug over time) can develop with both oral and inhaled forms of albuterol, particularly with prolonged or frequent high-dose use. This occurs due to the downregulation or desensitization of beta-2 adrenergic receptors on the bronchial smooth muscle, reducing the effectiveness of subsequent doses of the agonist. Choice C rationale The oral form of albuterol is absorbed systemically and must circulate throughout the body, causing greater systemic exposure. This can lead to more pronounced systemic side effects like nervousness, tremors, and tachycardia, compared to the inhaled form, which targets the lungs and minimizes systemic absorption. Choice D rationale Inhaled albuterol is delivered directly to the airways, where it immediately accesses the beta-2 adrenergic receptors on the bronchial smooth muscle. This direct action results in bronchodilation within minutes, providing an immediate therapeutic effect. The oral form requires time for gastrointestinal absorption and systemic distribution, delaying its onset.