Pope Francis passed a calm day in hospital Tuesday with no repeat of the previous day's respiratory crises, but the 88-year-old will wear an oxygen mask overnight, the Vatican said. The head of the Catholic Church has been in Rome's Gemelli hospital since February 14 for treatment of double pneumonia in both lungs.

Pope Francis, batting double pneumonia in hospital, remained stable throughout the day on Tuesday and did not have any new respiratory crises, the Vatican said. Francis, 88, had suffered two episodes of what the Vatican described as "acute respiratory insufficiency" on Monday.

Pope Francis suffered two episodes of "acute respiratory insufficiency" on Monday, the Vatican said, in another setback for the 88-year-old pontiff as he continues to battle double pneumonia. Francis has been in Rome's Gemelli Hospital since February 14,