Pope Francis was conscious but still receiving high flows of supplemental oxygen Sunday following a respiratory crisis and blood transfusions, as he remains in critical condition with a complex lung infection,

Francis, 88, is in critical condition at a Rome hospital with a complex lung infection. The Vatican said he was "alert and spent the day in an armchair" on Saturday.

Pope Francis was in critical condition Saturday after he suffered a long asthmatic respiratory crisis that required high flows of oxygen, the Vatican said.