Which of the following is a risk factor for Staph aureus pneumonia?

Which of the following is a risk factor for Staph aureus pneumonia?

• A. Influenza infection
• B. Long-term care residency
• C. Recent hospitalization or surgery
• D. Diabetes

Answer: (C)

Staph aureus pneumonia is strongly linked to healthcare exposure and invasive procedures. Being recently hospitalized or having undergone surgery increases the chance of acquiring Staph aureus, including MRSA, because hospitals are common sites for colonization and transmission. In the hospital, patients often have invasive devices, recent antibiotic exposure, and disrupted barriers, all of which facilitate entry of the bacteria into the lungs and the development of pneumonia. While other factors like a recent influenza infection can predispose to Staph aureus pneumonia, line-of-care exposure from hospitalization or recent surgery directly reflects the risk of acquiring and developing pneumonia from this organism in many clinical scenarios.

Staph aureus pneumonia is strongly linked to healthcare exposure and invasive procedures. Being recently hospitalized or having undergone surgery increases the chance of acquiring Staph aureus, including MRSA, because hospitals are common sites for colonization and transmission. In the hospital, patients often have invasive devices, recent antibiotic exposure, and disrupted barriers, all of which facilitate entry of the bacteria into the lungs and the development of pneumonia. While other factors like a recent influenza infection can predispose to Staph aureus pneumonia, line-of-care exposure from hospitalization or recent surgery directly reflects the risk of acquiring and developing pneumonia from this organism in many clinical scenarios.