¿Cuál es el mejor FEV1 para detectar insuficiencia respiratoria crónica en la EPOC estable?

A post-BD FEV1 of 36% is the best cut-off point to adequately predict both hypoxaemic and hypercapnic respiratory failure in the patient with stable COPD. For its part, an SaO2 of 90% is the best value for isolated hypoxaemic failure. These values could be considered for future clinical recommendations/guidelines for COPD.