International Board of Certified Lactation Consultant (IBCLC) Practice Exam

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What is the weight classification for a newborn that falls above the 90th percentile?

  1. Small for gestational age (SGA)

  2. Preterm

  3. Appropriate for gestational age (AGA)

  4. Large for gestational age (LGA)

The correct answer is: Large for gestational age (LGA)

A newborn that falls above the 90th percentile is classified as Large for Gestational Age (LGA). This classification indicates that the baby's weight is greater than what is generally expected for their gestational age, suggesting that the infant is heavier than the majority of peers at the same developmental stage. Being classified as LGA can be the result of various factors including maternal diabetes, obesity, or genetics, and it often raises considerations for the care and monitoring of the infant due to potential complications associated with a higher birth weight. The significance of this classification involves understanding the implications for the newborn’s health, such as increased risk for delivery complications and the need for careful assessment in postpartum care.