The 82-year-old veteran actress, who is suffering from a respiratory tract infection, is not out of danger as her breathing difficulty remains, the doctors said.
Her low food intake has made her weak, they said.
A medical bulletin issued by Belle Vue Clinic, where she is admitted since December 23 said, "Her oxygen saturation has stabilised to some extent with wide variation. She tolerated non-invasive ventilation better than before."
Sen is put on oral prescribed diet supplemented with peripheral parenteral nutrition and has been seen by Pawan Agarwal and Dhiman Ganguli besides a medical-team led by critical care specialist Subrata Maitra which is monitoring her condition 24x7.