This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New born infants, Subject name: Pediatrics
[{'content': 'What is the ponderal index of a child with weight 2000 g and height 50 cm \nSelect and explain. \nA. 1.6, B. 3.6, C. 2.2, D. 2.6', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ponderal index(PI) is calculated by multiplying the weight in grams by hundred and then dividing by cube of length in cm. Therefore, PI = 2000 x 100 / 50^3 =1.6 This parameter is usually less than 2 in asymmetrical IUGR baby and 2 or more in a baby who has either normal growth or has symmetrical IUGR. Reference : page 137 Ghai Essential Pediatrics 8th edition', 'role': 'assistant'}]