Which statement describes the action of a beta-adrenergic agent for a patient with a respiratory disorder such as asthma?

A. It is important to place a surgical mask on the patient when transporting them to minimize the risk of spreading TB droplets in the environment. This practice helps reduce transmission during transport.
B. TB is primarily transmitted via airborne particles, not droplets. Therefore, patients with active TB should be placed on airborne precautions, not droplet precautions. Airborne precautions include the use of specialized masks and a negative airflow room to prevent the spread of infectious aerosols.
C. While a surgical mask is not adequate for protecting healthcare workers from TB, they should wear a fitted N95 respirator or a powered air-purifying respirator (PAPR) when providing care to a patient with active TB. A surgical mask does not filter out the small particles that can carry TB bacteria.
D. Patients with active TB should be placed in a private room that has negative pressure ventilation. This design helps prevent airborne TB particles from escaping into other areas of the healthcare facility, protecting other patients and staff.
E. Eye protection is recommended when collecting sputum samples from a patient with active TB, as it helps protect against potential splashes of respiratory secretions that may contain infectious droplets. This is particularly important during procedures that may aerosolize the bacteria.

A. Propranolol is a non-selective beta-blocker that can cause bronchoconstriction, making it contraindicated for patients with asthma. It can worsen asthma symptoms by blocking beta-2 adrenergic receptors, which are important for bronchodilation.
B. Theophylline is a bronchodilator that can be used in asthma management, especially in chronic cases. While it has a narrow therapeutic index and can have side effects, it is not contraindicated in acute exacerbations. However, it’s less commonly used today due to better alternatives.
C. Prednisone is a corticosteroid used to reduce inflammation during asthma exacerbations. It is a common and appropriate medication for managing acute asthma attacks, so it does not require clarification.
D. Montelukast is a leukotriene receptor antagonist used for long-term asthma control. It helps reduce inflammation and bronchoconstriction. While it’s not a first-line treatment for acute exacerbations, it is appropriate for ongoing management and doesn’t need clarification.