Veteran actor Soumitra Chatterjee was given blood transfusion on Sunday after his haemoglobin count fluctuated as his condition remained critical, one of the attending doctors said in a statement.

The 85-year-old Chatterjee was admitted to a private hospital in the city 25-days back after he tested positive for Covid-19.

The condition of the veteran actor was a matter of concern due to co-morbidities and advanced age, the doctor said, adding "We are fire fighting with complications happening."

"His bleeding part is not contained or controlled fully. His haemoglobin is fluctuating. We had to transfuse four units of blood. We had to do a CT to find out his exact internal bleeding location. We are trying to seal the bleeding spot which is yet to be fully successful," he said.

"Every passing day we may be losing ground due to his advanced age. We are correcting a lot of things. We are optimising organ functions. His neurological issues not been treated fully to the point of his recovery. This is actually the main problem of Chatterjee's general non-improvement of consciousness status." the doctor said.

However Chatterjee's organ functions are holding on, and he is putting on urine and oxygen part is satisfactory, according to the doctor.

The doctor said that they were considering giving him another dialysis, the third one since last Wednesday.

"There have been some mild physiological alterations due to the bleeding, we might give him a dialysis," he said then.

The other vital parameters of the thespian are working fine, he said, adding that "lung-wise he is doing okay. And infection part is not that bad."

Two sessions of dialysis had earlier been conducted on Chatterjee since Wednesday, because of which his vital parameters became stable at that time.

The veteran actor is on ventilator support since last week.

The iconic actor, who had debuted in Satyajit Ray masterpiece Apur Sansar, is under treatment since October 6 after he tested Covid-19 positive.

He later tested negative for the infection but Covid- 19 encephalopathy set in and various other comorbidity complications surfaced.