Urgent Care For Pneumonia 2

Question 1

A 70-year-old nursing home resident presents with confusion, low-grade fever, and productive cough. Which organism is the most likely cause of his pneumonia?

Accepted Answer

Streptococcus pneumoniae

Answer

Streptococcus pneumoniae remains the most common cause of community-acquired pneumonia even in nursing home residents.

Question 2

Which of the following chest X-ray findings is most consistent with Pneumocystis jirovecii pneumonia (PCP)?

Accepted Answer

Bilateral interstitial or perihilar infiltrates

Answer

PCP typically presents with bilateral interstitial or ground-glass perihilar infiltrates on chest X-ray in immunocompromised patients.

Question 3

A 45-year-old with HIV and a CD4 count of 80 presents with dyspnea and dry cough. His SpO2 is 88% on room air. Which finding would MOST support PCP pneumonia over bacterial pneumonia?

Accepted Answer

Hypoxia disproportionate to the chest X-ray findings

Answer

PCP classically causes hypoxia that appears worse than expected from relatively subtle chest X-ray abnormalities.

Question 4

Which of the following criteria is part of the PSI/PORT score used to risk-stratify pneumonia patients?

Accepted Answer

Blood urea nitrogen level

Answer

Blood urea nitrogen (BUN) is one of the laboratory values included in the PSI/PORT scoring system to determine pneumonia severity.

Question 5

A patient with pneumonia has a pH of 7.30, PaO2 of 55 mmHg, and bilateral infiltrates. Which additional criterion would indicate ARDS complicating pneumonia?

Accepted Answer

PaO2/FiO2 ratio < 200

Answer

ARDS is defined by a PaO2/FiO2 ratio < 200 (severe) along with bilateral infiltrates and non-cardiac pulmonary edema.

Urgent Care Practice Test

Urgent Care Practice Test

Urgent Care For Pneumonia 2