Pope Francis's condition remains "critical but stable," Vatican officials said in a brief update on Tuesday.
"There have been no acute respiratory episodes and hemodynamic parameters continue to be stable. In the evening, he underwent a scheduled CT scan for radiological monitoring of the bilateral pneumonia. The prognosis remains uncertain," the Vatican said Tuesday.
The pope resumed his work activities after receiving the Eucharist.
The pope "rested well, all night long," sleeping without interruption, Vatican sources told ABC News. He woke up on Tuesday and continued his usual therapies, the sources said.
Francis, 88, has been hospitalized at Rome's Gemelli Hospital since Feb. 14 following a bout with bronchitis.
Vatican officials said Sunday he remained in critical condition. Officials said on Monday that he had shown a "slight improvement."
The pontiff, who has led the Catholic Church since 2013, was diagnosed with pneumonia last Tuesday, according to the Vatican.