True regarding thermal injury is A/E -

Reff: The synopsis of forensic medicine& Toxicology. 28th edition pg: 165 Body surface area involved in the burns: The estimation of the burn surface area in adult is calculated by the Wallace rule of nine. In children the burn surface area can be calculated by the Lund and Browder cha. If the burn surface area is more than 15% in an adult and 10% in a child, the loss of circulating blood volume must be replaced else hypovolemic shock may develop. Patients with superficial burns involving 50% of the body surface area can survive. 15 Wallace Rule of Nine *9% for head and neck *9% for each upper limb *9% for front of chest *9% for back of chest *9% for front of abdomen *9% for back of abdomen *9% for front of right lower limb *9% for front of left lower limb *9% for front of right lower limb *9% for back of left lower limb *1% for perineum. In children, the burn suface area is calculated using Lund and Browder cha.