Former Prime Minister Atal Bihari Vajpayee, who is undergoing treatment at the All India Institute of Medical Sciences, is fully conscious and is breathing on his own, a senior doctor said on Sunday.

"He is breathing on his own and he is fully conscious," Dr Sampath Kumar, chief of the Cardio Thoracic Vascular Sciences Department at the hospital, said.

Kumar said 84-year-old Vajpayee is doing well and his ventilatory support has been removed. "We will monitor his condition for two to three days before taking any decision on removing his ventilatory support permanently," he said.

Vajpayee's basic parameters like heart, kidney, liver and blood pressure were normal and he had recovered from pneumonia.

The Bharatiya Janata Party leader was admitted to AIIMS on February 3 following complaints of chest infection. He was later diagnosed with pneumonia and put on ventilatory support.