The Sir Ganga Ram Hospital in Delhi has sent an SOS to the government, saying there were only two hours of oxygen left at the healthcare facility. 25 sickest patients have died in the last 24 hours at the hospital. Oxygen will last another 2 hours. Ventilators and Bipap not working effectively. Need Oxygen to be airlifted urgently. Lives of another 60 sickest patients in peril”, an official of the hospital said.