ROME and LONDON -- Pope Francis suffered two episodes of "acute respiratory failure" on Monday, the Vatican said. The episodes were caused by a "significant accumulation of endobronchial mucus and consequent bronchospasm," the Vatican's press office said in a brief statement.

Pope Francis will resume "non-invasive mechanical ventilation" Tuesday despite his condition remaining stable, the Vatican announced in an evening update.

The Vatican said the pope responded well to the treatment, with a good level of gas exchange, and remained conscious and alert at all times.

Pope Francis on Monday suffered two attacks of "acute respiratory insufficiency," the Vatican said, as the 88-year-old continues his health fight.

Pope France, who has been in the hospital since February 14, experienced two episodes of acute respiratory insufficiency, caused by a significant accumulation of endobronchial mucus and consequent bronchospasm.

The Vatican said Friday that Pope Francis is on a breathing machine after suffering a sudden respiratory episode during his hospitalization. "The Holy Father, this afternoon, after a morning spent alternating between respiratory physiotherapy and prayer in the chapel,

Pope Francis remains in stable condition after a bronchospasm attack, receiving oxygen therapy while staying alert and able to take the Eucharist.

Pope Francis has had a new bronchospasm crisis as he battles pneumonia in a Rome hospital and his prognosis remains guarded, the Vatican said Friday. "The Pope in the early afternoon today, after a morning spent alternating respiratory physiotherapy with prayer in the chapel,

Pope Francis, 88, was placed on a non-invasive mechanical ventilator after a bronchospasm caused him to inhale vomit. His condition is “guarded.”