"All his vital parameters like heart rate, blood pressure, blood biochemistry values are nearly normal and stable," a health bulletin issued by A N Safaya, the Director of Sri Sathya Sai Institute of Higher Medical Sciences, said.
He is in a "relatively more stable condition of health," the bulletin said.
Though intermittent dialysis is still being conducted to assist the kidneys, they are showing signs of improvement, it said.
"He still continues to be on assisted ventilation and intermittent slow hemodialysis is being conducted upon him to assist the kidneys, which are now showing signs of sustained activity," the bulletin said.
The doctors attending on him are satisfied with the stability of his health condition and his response, although slow, to the treatment being given to him, the bulletin said.
86-year-old Sathya Sai Baba was admitted to the hospital on March 28 following problems related to heart and respiration.