Pope Francis had stabilized enough Tuesday after two respiratory crises to be taken off noninvasive mechanical ventilation and receive just high flows of supplemental oxygen, as he continued his more than two-week long fight against double pneumonia,

The 88-year-old, who had part of one lung removed as a young man, experienced two acute respiratory crises on Monday.

Pope Francis rested well overnight, the Vatican said on Tuesday, after the 88-year-old pontiff suffered a setback a day earlier as he battles double pneumonia in hospital.