Práctica NBRC RT exam

A 34-year-old woman with sudden pleuritic chest pain is breathing room air at sea level. Her ABG shows pH 7.48, PaCO2 30 mm Hg, and PaO2 60 mm Hg. Use barometric pressure 760 mm Hg, water vapor pressure 47 mm Hg, and a respiratory quotient of 0.8. What is her alveolar-arterial oxygen gradient?

• AAbout 52 mm Hg
• BAbout 60 mm Hg
• CAbout 62 mm Hg
• DAbout 90 mm Hg