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': 'Which of the following does not describe a "high risk" infant? \nSelect and explain. \nA. Third baby, B. Birth weight less than 2.5 kg, C. Premature neonate, D. Twins', 'role': 'user'}, {'content': "Answer: A \nExplanation: a. Third baby(Ref: Nelson's 20/e p 819)Factors that define an infant as being 'high risk':Demographic social factorsPrevious pregnancyPresent pregnancyMaternal age <16 or >40 yrIntrauterine fetal demiseVaginal bleeding (abruptio, placenta previa)Illicit drug, alcohol, cigarette useNeonatal deathSexually transmitted ds (e.g. syphilis, HIV)Past medical historyPrematurityMultiple gestationGenetic disordersIntrauterine growth restrictionPreeclampsiaDiabetes mellitusNeonatePremature rupture of membranesHypertensionBirthweight <2,500 or >4,000gPoly-/oligohydramniosAsymptomatic bacteriuriaBirth <37 or >=42 wk of gestationCongenital malformationRheumatologic illness (SLE)Respiratory distress, cyanosisLabor and delivery Fetal distress Breech presentation Meconium-stained fluid", 'role': 'assistant'}]