A client is receiving oxygen therapy via a nasal cannula. When the client asks the nurse why he needs to have oxygen tubing in his nose, which of the following explanations about the cannula should the nurse give him?

A. Nasal cannulas deliver a low flow rate of oxygen, which means the concentration of oxygen delivered is not constant and can vary depending on the client's breathing rate and depth.
B. Nasal cannulas are designed to be worn continuously, and removing them can disrupt the delivery of oxygen and potentially worsen the client's condition.
C. Nasal cannulas are typically used to deliver low concentrations of oxygen, which is often sufficient for patients with mild to moderate respiratory conditions.
D. Nasal cannulas cannot deliver the highest concentration of oxygen possible. For patients who require higher concentrations of oxygen, other delivery methods, such as a face mask or mechanical ventilation, may be necessary.

A. Clients with pulmonary tuberculosis are contagious, especially in the initial stages of treatment. Wearing a mask helps reduce the risk of transmitting the infection to others, particularly in crowded settings or when in close contact with individuals who are immunocompromised.
B. While sputum cultures are important for monitoring the effectiveness of TB treatment, they are typically collected more frequently in the initial phases of treatment (usually monthly until the patient is declared non-infectious). Instructing the client to provide samples every 6 weeks may not adequately ensure ongoing monitoring of their condition.
C. Alcohol can interact negatively with many antituberculosis medications (such as isoniazid and
rifampin), increasing the risk of liver toxicity. It’s usually advised that patients avoid alcohol altogether during treatment for TB to ensure the effectiveness of the medications and minimize the risk of adverse effects.
D. Used tissues should be disposed of immediately in a sealed plastic bag or a designated biohazard container to minimize the risk of spreading TB germs. Storing soiled tissues in a paper bag is not an effective way to ensure safety and hygiene.