The 82-year-old actress was put on the ventilator on January 3. (Agencies)
At the moment her respiratory tract infection is under control though it still remains detrimental to her health, said Subrata Maitra, member of the team of seven experts monitoring Sen at the Belle Vue Clinic here.
"She is not out of danger yet but is in a much better condition," Maitra said.
Her frequently fluctuating oxygen saturation is now at a "reasonable level" and her condition has "stabilised to some extent", said the latest medical bulletin from the hospital.
"She is needing intermittent non-invasive ventilation and chest physiotherapy. Her heart rate and blood pressure are satisfactory," the statement said.
Doctors attending to the actress earlier on Sunday said Sen was ‘partially responding’ to intermittent non-invasive ventilation support and is on a course of antibiotics.
Sen was undergoing treatment for a chest infection at a nursing home since December 23 and was taken to the CCU after her condition worsened on December 28.
One of the finest actresses of her time, she is known for her performances in films like "Deep Jwele Jaai" and "Uttar Falguni" in Bengali as well as Hindi movies such as "Devdas", "Bombai Ka Babu" and "Mamta".
Her work was appreciated offshore too - she won the best actress award for "Saat Paake Bandha" at the Moscow Film Festival in 1963.
She quit acting in 1978. Since her retirement, she meets only a few people, including her daughter Moon Moon Sen and grand daughters Raima and Riya Sen.
The 82-year-old actress was put on the ventilator on January 3.