<prompt> Early cause of death due to burns is :ShockInfectionHaemorrhageDiabetes  <response>: The main causes of early death shock and inhalation injury. The Prognostic Burn Index is the sum of the patients age and percentage of full thickness or deep paial thickness burn. An additional 20 moality is added if inhalation injury is present. The Prognostic Burn Index is most useful at the extremes of age. Ref : Nemer J.A. 2013. Chapter 37. Disorders Related to Environmental Emergencies. In M.A. Papadakis, S.J. McPhee, M.W. Rabow, T.G. Berger Eds,CURRENT Medical Diagnosis Treatment 2014. 