What should the nurse teach the patient with TB to minimize exposure to close contacts?

Correct Answer: C

Rationale: Teach the patient how to minimize exposure to close contacts and household members. Homes should be well ventilated, especially the areas where the infected person spends a lot of time. While still infectious, the patient should sleep alone, spend as much time as possible outdoors, and minimize time in congregate settings or on public transportation.

Correct Answer: C

Rationale: The patient's peak flow reading indicates that the condition is worsening (yellow zone). The patient should take the bronchodilator and recheck the peak flow. Depending on whether the patient returns to the green zone, indicating well-controlled symptoms, the patient may be prescribed oral corticosteroids or a change in dosing of other medications.

Correct Answer: C

Rationale: Use of a bronchodilator before exercise improves airflow for some patients and is recommended. Shortness of breath is normal with exercise and not a reason to stop.

Correct Answer: A

Rationale: The electronic configuration of oxygen is 1s² 2s² 2p⁴´, reflecting its 8 electrons distributed across energy levels.

Correct Answer: A

Rationale: Absent breath sounds may indicate a pneumothorax, a serious complication after an open lung biopsy, requiring immediate reporting.