New Delhi: Former Prime Minister Atal Bihari Vajpayee was admitted to AIIMS hospital on Monday.  The doctors have described as a routine check-up which he undergoes every 15 days. As per reports, he was suggested by doctors to get admitted for one-day so that he can be kept under constant care. As per sources, AIIMS director Randeep Guleria will keep a close check on Vajpayee’s health.  Guleria, a pulmonologist and director at AIIMS has served as personal physician to Vajpayee for over three decades. Reports say he will be discharging by evening. 93-year-old Vajypee is the oldest living ex-Prime Minister of India. He has been suffering through breathing problems for a long time and had to quit politics due to health issues. The dynamic BJP leader was the 10th Prime Minister of the country.