Vital capacity and oxygen saturation at rest and after exercise predict hypoxaemia during hypoxic inhalation test in patients with respiratory disease

Background and objective The hypoxic inhalation test ( HIT ) accurately predicts air travel hypoxaemia, but availability is limited. We assessed whether oxygen saturation ( SpO 2 ) during HIT can be predicted by simple measures of lung function and exercise‐induced hypoxaemia. Methods Analysis of all patients who had HIT and lung function testing performed between J anuary 2005 and A pril 2010. Prior to HIT , SpO 2 on room air was measured at...