International Board of Certified Lactation Consultant (IBCLC) Practice Exam

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What is the weight classification for a newborn that is considered large for gestational age (LGA)?

Less than 10th percentile
Between 10th and 90th percentile
Above 90th percentile
At the 50th percentile

The correct answer is: Above 90th percentile

In the context of newborn sizing, a classification of large for gestational age (LGA) refers to infants who are significantly larger than the average for their specific gestational age. This determination is based on growth charts that assess the weight of newborns in relation to their gestational age, typically measured in weeks. Infants that fall above the 90th percentile in weight for their gestational age are classified as LGA. This means that they are heavier than 90% of infants born at the same gestational age, indicating that they may have increased potential risks associated with their size, such as delivery complications or increased likelihood of certain health conditions. Understanding this classification is important for healthcare providers as it helps in the assessment of potential medical care or intervention needed for LGA infants. In conclusion, identifying newborns as large for gestational age aligns with assessing their weight as being in the highest range when compared to the normative data set for infants of similar gestational age.