LTOT

Question 1

LTOT Indications in COPD
(ATS 2020 guideline: Home O2 therapy for adults with chronic lung disease)

Answer 1

severe hypoxemia: LTOT for ≥15h/d
Severe hypoxemia definition:
1) PaO2 ≤ 55mmHg or SpO2 ≤ 88%
2) PaO2 56-59mmHg or SpO2 89% + one of 3:
i) oedema
ii) haematocrit ≥55%
iii) p pulmonale

moderate hypoxemia: LTOT not recommended
Mod hypoxemia: SpO2 89-93%

severe exertional RA hypoxemia: ambulatory O2

Question 2

LTOT indication in ILD
(ATS 2020)

Answer 2

Severe hypoxemia: LTOT ≥15h
Severe exertional RA hypoxemia (SpO2 ≤88% on 6MWT): ambulatory O2

Question 3

Education on LTOT use

Answer 3

To be given to pt & care-giver:
i) Smoking cessation
ii) Fire prevention
iii) Tripping hazard
iv) adherence to O2 prescription
v) maintenance & troubleshooting of O2 equipment