The Vatican reports that Pope Francis has experienced 2 instances of ‘acute respiratory failure’.

Pope Francis suffered “two episodes of acute respiratory failure” Monday, the Vatican announced.

“The Vatican reported today that the Holy Father experienced two episodes of acute respiratory failure due to a significant buildup of endobronchial mucus leading to bronchospasm,” the statement said. “The medical team performed two bronchoscopies to remove the excess secretions.”

The update continued, “Later in the day, the Pope was put back on non-invasive mechanical ventilation. Throughout this time, he has remained alert, conscious, and cooperative. His condition is still being closely monitored.”

Bronchospasm, as characterized by the American Academy of Allergy, Asthma & Immunology, involves “the constriction of the bronchial tubes’ muscle layer,” resulting in the narrowing and blockage of the airways used for breathing.

Catholic faithful attend a nightly rosary prayer for the health of Pope Francis in St. Peter’s Square at the Vatican on Sunday, March 2. (AP/Mosa’ab Elshamy)

Doctors said the pope spent all day Sunday without using the noninvasive mechanical ventilation mask that pumps oxygen into his lungs that he used after a breathing crisis on Friday. 

“I would like to thank you for your prayers, which rise up to the Lord from the hearts of so many faithful from many parts of the world,” Pope Francis wrote on his X account on Sunday. 

Pope Francis was admitted to Rome’s Gemelli Hospital on Feb. 14. (Tiziana Fabi/Pool/AFP/Getty)

“I feel all your affection and closeness and, at this particular time, I feel as if I am ‘carried’ and supported by all God’s people,” he added.

Fox News’ Melissa Chrise and Landon Mion contributed to this report.