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Continue to ChatMy 75 year old patient has an arterial oxygen tension (Pa02) less than 90 mmHg on room air. Does age affect PaO2? https://pearls4peers.com/2020/04/24/my-75-year-old-patient-has-an-arterial-oxygen-tension-pa02-less-than-90-mmhg-on-room-air-does-age-affect-pao2/