The nurse is teaching a client with newly diagnosed asthma about using the prescribed drugs to manage acute asthma symptoms.

Which client statement indicates teaching was effective?

Choice A rationale

While constant irritation from chemical sprays can potentially damage the delicate tissues, frank ulceration is not the most common or primary clinical concern associated with the short-term overuse of nasal decongestants. The primary mechanism of action for these drugs is vasoconstriction. Chronic use leads to physiological changes in the vascular bed of the nasal mucosa rather than the type of deep tissue destruction that characterizes an ulcer or necrotic lesion in the nose.

Choice B rationale

Nasal decongestants like oxymetazoline work by stimulating alpha-adrenergic receptors, causing vasoconstriction of the nasal blood vessels. However, after prolonged use, the receptors become less responsive, and the vessels dilate excessively as the medication wears off. This is known as rhinitis medicamentosa. It creates a cycle where the patient uses more spray to relieve the worsening congestion, further damaging the nasal vasomotor tone. Normal nasal patency is maintained by a delicate balance of blood flow.

Choice C rationale

Decongestants do not directly suppress the immune system's ability to fight microorganisms. While they may slightly dry out the mucus that traps pathogens, they do not inhibit white blood cell function or antibody production. The primary risk of these medications is localized to the vascular response of the nasal mucosa. Decreased immunity is more commonly associated with systemic corticosteroids or immunosuppressants rather than topical adrenergic agonists used for short periods to treat nasal stuffiness.

Choice D rationale

Although nasal irritation can occur, urticaria is a systemic allergic reaction characterized by hives and is not a typical local effect of nasal spray overuse. Irritation is usually a minor side effect compared to the significant physiological rebound that occurs. Urticaria involves a Type I hypersensitivity reaction with histamine release, whereas the complications of decongestant overuse are related to the downregulation of adrenergic receptors and the resulting loss of vascular control in the nasal passages.

Choice A rationale

Diarrhea is not a recognized or common adverse effect associated with the use of inhaled albuterol. Albuterol is a sympathomimetic agent that primarily targets beta-2 adrenergic receptors in the lungs to induce bronchodilation. While some systemic absorption can occur, its effects on the gastrointestinal tract do not typically manifest as increased motility or diarrhea. Gastrointestinal side effects are much more common with oral medications or different classes of drugs like certain antibiotics or magnesium-containing antacids.

Choice B rationale

Tachycardia is a well-documented adverse effect of albuterol because it is a sympathomimetic medication. Although albuterol is selective for beta-2 receptors in the bronchioles, at therapeutic or high doses, it can cross-react with beta-1 receptors located in the cardiac muscle. This stimulation increases the heart rate and force of contraction. A normal adult resting heart rate is 60 to 100 beats per minute. Clients may also experience palpitations or a fluttering sensation in the chest due to this.

Choice C rationale

While some clients might report a headache after using a bronchodilator, it is not the most definitive or physiologically significant adverse effect compared to cardiovascular changes. Headaches associated with albuterol are often secondary to transient changes in blood pressure or systemic vasodilation. However, tachycardia remains the primary concern for nursing monitoring because it directly reflects the drug's impact on the sympathetic nervous system and requires careful assessment of the client's cardiovascular stability during respiratory treatment.

Choice D rationale

Throat irritation can occur due to the mechanical delivery of the aerosol or the propellants used in the inhaler, but it is not a systemic pharmacological adverse effect of the albuterol molecule itself. While annoying, it does not represent the scientific mechanism of adrenergic stimulation. Rinsing the mouth after use is often recommended to alleviate this local sensation and prevent secondary issues, but it lacks the physiological clinical significance of the systemic beta-adrenergic responses like tremors or increased heart rate.