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Determination of burn size estimates the extent of injury. Burn size is generally assessed by the “rule of nines.” In adults, each upper extremity and the head and neck are 9% of the TBSA, the lower extremities and the anterior and posterior trunk are 18% each, and the perineum and genitalia are assumed to be 1% of the TBSA. Another method of estimating smaller burns is to equate the area of the open hand (including the palm and the extended fingers) of the patient to be approximately 1% TBSA and then to transpose that measurement visually onto the wound for a determination of its size. This method is crucial when evaluating burns of mixed distribution. Children have a relatively larger portion of the body surface area in the head and neck, which is compensated for by a relatively smaller surface area in the lower extremities. Infants have 21% of the TBSA in the head and neck and 13% in each leg, which incrementally approaches the adult proportions with increasing age. The Berkow formula is used to accurately determine burn size in children. | Themes, U. (2020). of Burn Injuries. Retrieved 28 August 2022, from https://plasticsurgerykey.com/of-burn-injuries/

Determination of burn size estimates the extent of injury. Burn size is generally assessed by the “rule of nines.” In adults, each upper extremity and the head and neck are 9% of the TBSA, the lower extremities and the anterior and posterior trunk are 18% each, and the perineum and genitalia are assumed to be 1% of the TBSA. Another method of estimating smaller burns is to equate the area of the open hand (including the palm and the extended fingers) of the patient to be approximately 1% TBSA and then to transpose that measurement visually onto the wound for a determination of its size. This method is crucial when evaluating burns of mixed distribution. Children have a relatively larger portion of the body surface area in the head and neck, which is compensated for by a relatively smaller surface area in the lower extremities. Infants have 21% of the TBSA in the head and neck and 13% in each leg, which incrementally approaches the adult proportions with increasing age. The Berkow formula is used to accurately determine burn size in children. | Themes, U. (2020). of Burn Injuries. Retrieved 28 August 2022, from https://plasticsurgerykey.com/of-burn-injuries/