LUCKNOW: The postmortem report of Prateek Yadav revealed that he died due to a massive blockage in the blood vessels of the lungs, leading to a collapse of the heart and respiratory system. The report stated that doctors preserved the heart and the clot-like material recovered from the lungs in formalin for detailed histopathological examination.Viscera samples were also preserved and sent for chemical analysis as part of the forensic procedure to rule out any other medical or toxicological factors.Sources said forensic experts would now conduct laboratory tests on the preserved samples to ascertain the exact nature and origin of the clot and to determine whether any underlying medical condition or external factor contributed to the death.The postmortem report further noted that all injuries found on the body were “antemortem,” meaning they had occurred before death. Doctors indicated that no conclusive inference regarding the nature of those injuries would be drawn until the final forensic and chemical examination reports are received. Overall, six antemortem injuries were found. Three of which were five to seven days older and the other three about a day. The injures could not be explained.Associate director in the department of medicine at Medanta Hospital, Ruchita Sharma, said Prateek had been undergoing treatment for hypertension and pulmonary embolism. “I had been treating him for a long time. He was suffering from high blood pressure and hypertension-related issues,” she said. Dr Sharma said Prateek had been admitted to the hospital a few days ago after being diagnosed with pulmonary embolism, a serious condition caused when a blood clot gets lodged in the arteries of the lungs.“Due to blockage in the lungs, the functioning of his heart was adversely affected. A few weeks ago, he came to us complaining of breathing difficulties and related complications, and during examination he was diagnosed with pulmonary embolism,” she said.Dr Sharma said Prateek was on bloodthinning medication and aware of his medical condition.