Pope Francis' condition still 'critical,' Vatican says in latest health update

ROME and LONDON -- Pope Francis' information remained "critical" connected Sunday, but the pontiff hasn't experienced immoderate much "respiratory crises" since Saturday evening, according to the Vatican.

In its latest update connected Sunday afternoon, the Vatican said the pope was fixed 2 units of concentrated reddish humor cells "with payment and an summation successful hemoglobin level." Doctors archer ABC News this means his anemia successfully improved.

"Thrombocytopenia has remained stable; however, immoderate humor tests amusement an initial, slight, renal insufficiency, which is nether control," the Vatican said. "High-flow oxygen therapy done the nasal cannula is continuing."

Doctors accidental this means his debased platelets are unchanged, but determination are signs of decreased kidney relation connected humor tests. Generally speaking, doctors accidental decreased kidney relation tin beryllium owed to galore underlying problems, broadside effects of medications, oregon owed to the kidneys not getting capable humor flow. It's unclear from the Vatican's connection what has caused this, but it appears to beryllium mild and is being monitored.

"The Holy Father continues to beryllium vigilant and good oriented," the Vatican continued. "The complexity of the objective picture, and the clip needed for the pharmacological therapies to nutrient results, mean that the prognosis remains uncertain."

On Sunday morning, successful an flat acceptable up for the pope connected the 10th level of Rome's Gemelli Hospital, Francis took portion successful Holy Mass with those who person been taking attraction of him during his stay, according to the Vatican.

The pontiff had a peaceful nighttime of rest, the Holy See said successful a connection earlier Sunday.

The 88-year-old pope underwent different circular of objective tests connected Sunday morning, Vatican sources told ABC News.

The pontiff, successful a written supplication released connected Sunday, said helium was "confidently continuing" his hospitalization, adding that "rest is besides portion of the therapy!"

"I sincerely convey the doctors and wellness workers of this infirmary for the attraction they are showing maine and the dedication with which they transportation retired their work among the sick," helium said.

Asthmatic respiratory situation indicates the pope struggled to support a capable oxygen level erstwhile breathing connected his own, according to aesculapian experts.

The Vatican connected Saturday said the pope, who has led the Catholic Church since 2013, remained successful captious condition.

The pope has been hospitalized astatine Rome's Gemelli Hospital since Feb. 14 pursuing a bout with bronchitis.

He was diagnosed with pneumonia connected Tuesday, according to the Vatican.

Apart from his aesculapian squad and security, the pope has not had visitors isolated from his closest aides, sources said.

ABC News' Ivan Pereira and Youri Benadjaoud contributed to this report.