Final answer:
The primary concern for Mary Barkley is respiratory distress.
Step-by-step explanation:
The primary concern for Mary Barkley, a 74-year-old female who has tested positive for COVID-19 and is exhibiting symptoms of a respiratory infection, is respiratory distress.
Given that she has tested positive for COVID-19 and is at risk due to her age and underlying health condition (Lupus), it is important to closely monitor her respiratory status. COVID-19 can cause severe respiratory complications, especially in older adults and individuals with pre-existing medical conditions. Prompt intervention and close monitoring of respiratory symptoms can help prevent further complications and ensure appropriate care for Mary Barkley.
Isolation precautions are necessary to prevent the spread of COVID-19, but respiratory distress is the primary concern for her at this time.