By Joshua McElwee VATICAN CITY (Reuters) - Pope Francis, battling double pneumonia in hospital, remained stable throughout the day on Tuesday and did not have any new respiratory crises, the Vatican said.

VATICAN CITY (Reuters) -Pope Francis rested well overnight and is in a stable condition as he fights double pneumonia in hospital for the 18th day, the Vatican said on Monday.

Pope Francis has not been seen in public since entering the hospital, his longest absence from view since his papacy started in March 2013.

Pope Francis, who has been in hospital for almost three weeks battling double pneumonia, is in stable condition and is doing some physical therapy, the Vatican said on Thursday. The 88-year-old pontiff was admitted to Rome's Gemelli hospital on February 14 with a severe respiratory infection that has required continuously evolving treatment.

Pope Francis suffered two episodes of acute respiratory failure Monday, the Vatican said, a fresh setback in the worst health crisis of his papacy.

Pope Francis was in stable condition Tuesday and breathing with just the help of supplemental oxygen after respiratory crises a day earlier, but will resume

Pope Francis has remained stable after suffering two episodes of respiratory failure on Monday. In its nightly update, the Vatican said the Pope did not present any further episodes of respiratory failure or bronchospasm.