Sri Lanka, Feb. 23 -- The Vatican announced on Saturday that Pope Francis' health had worsened in the past 24 hours, marking the first time his condition has been described as "critical." The 88-year-old pontiff required supplemental oxygen and blood transfusions after suffering a prolonged asthma-like respiratory crisis in the morning.

Francis was admitted to Rome's Gemelli hospital on February 14 after experiencing breathing difficulties and was diagnosed with pneumonia in both lungs. The Vatican said he remains alert but is suffering more than the previous day, with his prognosis remaining uncertain.

Doctors administered high-flow oxygen and blood transfusions due to a low platelet count, which is linked to anemia. Medical experts sp...