Alveolar-arterial oxygen gradient

Age increases alveolar-arterial oxygen gradient in humans (0.12 mmHg/year).

“with aging P(A-a)O2 tended to increase 0.12 mmHg/year.”

Humansresiding at 2,240 meters above sea leveln = 217

Arterial Blood Gases in Normal Subjects at 2240 Meters Above Sea Level: Impact of Age, Gender, and Body Mass Index

Revista de investigacion clinica; organo del Hospital de Enfermedades de la Nutricion·Jan 1, 2023