International Board of Certified Lactation Consultant (IBCLC) Practice Exam

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What weight range is classified as low birth weight (LBW)?

Less than 1500 grams
1500 to 2500 grams
2500 to 3500 grams
3500 to 4500 grams

The correct answer is: 1500 to 2500 grams

Low birth weight (LBW) is defined as a birth weight of less than 2500 grams (or approximately 5 pounds, 8 ounces). This classification is important because infants who are born with low birth weight are at a higher risk for a variety of health challenges, including difficulties with feeding, higher rates of infection, and developmental delays. The classification of LBW includes all infants born with a weight below 2500 grams, which is why the range from 1500 to 2500 grams is accurately identified as low birth weight. This segment includes both moderately low birth weight (between 1500 and 2500 grams) and very low birth weight (less than 1500 grams). Understanding these weight categories is crucial for health professionals in order to monitor and provide appropriate care for these vulnerable infants. In contrast, the other weight ranges suggested do not fall within the definition of low birth weight, as they encompass weights considered normal or high for newborns. Therefore, the range classified as LBW is specifically up to 2500 grams, making the selected answer appropriate and aligned with established health classifications.