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Table 16 Criteria for LTOT

From: The AIMAR recommendations for early diagnosis of chronic obstructive respiratory disease based on the WHO/GARD model*

PaO2< 7.3 KPa (55 mmHg, SaO2< 88%) in stable phase and during optimal therapeutic regime
PaO2 between 7.3 and 7.8 kPa (55-59 mmHg, SaO2< 89%) in the presence of pulmonary hypertension, pulmonary heart, declivity edema, erythrocytosis (hematocrit > 55%), cognitive deficit
Patients with manifest hypoxemia during exercise or at night
  1. From[35].