Yadav was taken to Gurugram in a chartered flight on Monday night.
On Sunday, the Samajwadi leader had been admitted to the Lohia Hospital in Lucknow after he complained of uneasiness and weakness. The doctors found his sugar levels were high and he was also suffering from acute hypertension.
However, he was later discharged from hospital early Monday morning. The doctors closely monitored his heath throughout the day but his condition apparently deteriorated in the evening after which he was shifted to Medanta.
Meanwhile, party sources said that the senior leader would be kept under close observation for the next few days in Medanta hospital.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)