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': 'Late metabolic acidosis is seen in- \nSelect and explain. \nA. Term infant given formula feed, B. Preterm baby getting cow milk, C. Long term breast feeding, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e., Preterm baby getting cow milk Late metabolic acidosis (LMA) o Late metabolic acidosis is a special type of acidosis in apparently healthy premature infant. o This hyperchloremic acidosis appeares during second and third week of life, and resolves spontaneously within a couple of weeks. Definition "An acidosis occuring after second day of life, in which base excess values are lower than -5meq/L on two consecutive estimations done at least 24 hours apa". Etiology o Prematurity is the most impoant single predisposing factor in the development of LMA. o The incidence varies considerably depending upon the gestational maturity and protein content of feeding formula. o In preterm neonates fed on a modified cow\'s milk the risk of developing LMA is very high.', 'role': 'assistant'}]