"There is no change in his condition. He is still on total ventilator support," the bulletin issued by the Aanathapuri hospital, where he is undergoing treatment, said.
However, there was a slight improvement in the oxygen content in his blood, it said. 93-year-old Karunakaran was admitted to the hospital on Friday for fever and respiratory problems. Though he had initially responded to medicines, his condition worsened yesterday and he was put on a ventilator.
A panel of doctors was constantly monitoring the condition of Karunakaran, a four-time chief minister, and he continued to receive medication to cure infections, the bulletin said.