This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'A five year old child presents to the emergency department with burns. The burn area corresponding to the size of his palm is equal to \nSelect and explain. \nA. 1% BSA, B. 5% BSA, C. 10% BSA, D. 20% BSA', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Estimation of body surface area (BSA) of burn\nRough estimate of body surface area of bum can be estimated by following rules.\nRule of Palm (Palmar method)\n\nIt can be used in Children as well as in adults.\nIt is used for small burns (<10% of BSA)\nThe palm of patients hand represents I% of BSA. Palm is the area of hand from wrist crease to the finger crease.\nEntire burned hand represents 2.5% of BSA: 1/% for palm; 1% for dorsum of the hand (excluding fingers);0. 5% for the fingers\n\nRule of 9\n\nIt can be used in adults and children older than 14 years.\nIt is used for larger surface area burns.\nEstimates the body surface area of an adult in multiples of 9.\nAn adult who has been burned, the percent of the body involved can be calculated as follows:\nHead and Neck = 9%\nAnterior chest = 9%\nAnterior abdomen =9%\nUpper back = 9%\nLower back = 9%\nRight upper extremity (Anterior + Posterior) = 9%\nLeft upper extremity (Anterior + Posterior) = 9%\nRight lower extensity, Anterior = 9%\nRight lower extremity, Posterior = 9%\nLeft lower extremity, anterior = 9%\nLeft lower extremity, Posterior = 9%\nPerenium= 1%\nPercent of the burn in a child can be calculated as follows:\nHead and neck = 9%\nAnterior trunk =18%\nPosterior trunk =18%\nUpper extremity (Right) = 9%\nUpper extremity (Left) = 9%\nLower extremity (Right) = 18%\nLower extremity (Left) =18%\nPerenium = 1%', 'role': 'assistant'}]