<prompt> A five year old child presents to the emergency department with burns. The burn area corresponding to the size of his palm is equal to1 BSA5 BSA10 BSA20 BSA  <response>: Estimation of body surface area BSA of burnRough estimate of body surface area of bum can be estimated by following rules.Rule of Palm Palmar methodIt can be used in Children as well as in adults.It is used for small burns 10 of BSAThe palm of patients hand represents I of BSA. Palm is the area of hand from wrist crease to the finger crease.Entire burned hand represents 2.5 of BSA: 1 for palm; 1 for dorsum of the hand excluding fingers;0. 5 for the fingersRule of 9It can be used in adults and children older than 14 years.It is used for larger surface area burns.Estimates the body surface area of an adult in multiples of 9.An adult who has been burned, the percent of the body involved can be calculated as follows:Head and Neck 9Anterior chest 9Anterior abdomen 9Upper back 9Lower back 9Right upper extremity Anterior Posterior 9Left upper extremity Anterior Posterior 9Right lower extensity, Anterior 9Right lower extremity, Posterior 9Left lower extremity, anterior 9Left lower extremity, Posterior 9Perenium 1Percent of the burn in a child can be calculated as follows:Head and neck 9Anterior trunk 18Posterior trunk 18Upper extremity Right 9Upper extremity Left 9Lower extremity Right 18Lower extremity Left 18Perenium 1 