Supplemental oxygen is recommended in those with low oxygen levels at rest (a partial pressure of oxygen less than 50–55 mmHg or oxygen saturations of less than 88%).
Oksigen suplemen direkomendasikan bagi mereka yang level oksigennya rendah saat beristirahat(tekanan parsial oksigen kurang dari 50–55 mmHg atau saturasi oksigen kurang dari 88%).