Normal weight of infant at 1 year from bih is: September 2007
**Question:** Normal weight of infant at 1 year from bih is: September 2007
**Core Concept:** Infant growth and development, particularly focusing on weight gain during the first year of life.
**Why the Correct Answer is Right:**
The correct answer refers to the World Health Organization (WHO) growth charts, which are widely accepted for assessing infant growth. These charts provide reference values for infant weight gain, height, and head circumference based on sex and gestational age. In the context of the question, the correct answer represents the median weight for a healthy infant at 12 months of age according to WHO's growth standards.
**Why Each Wrong Option is Incorrect:**
A. Gestational age is not mentioned, making this option incorrect as it does not specify whether the infant is a full-term (birth at ≥37 weeks) or preterm (birth before 37 weeks) infant.
B. This answer is incorrect as it does not align with the WHO growth standards mentioned in the correct answer.
C. The reference to "September 2007" is irrelevant and misleading, as the WHO growth charts are continually updated based on new research and data, not specific to a single year.
D. This answer does not align with the WHO growth standards and does not consider gestational age.
**Clinical Pearl / High-Yield Fact:**
Understanding infant growth and development, especially using international standards like the WHO growth charts, is crucial for pediatricians and healthcare providers. Close monitoring of infant growth and nutrition allows for early identification and intervention in cases of growth failure or excessive weight gain, ensuring optimal health outcomes for the child.
**Correct Answer:**
**Correct Answer: %90**
The correct answer refers to the 90th percentile for weight at 12 months, indicating that the infant's weight falls within the 90th percentile for its sex and gestational age, according to the WHO growth standards. This percentile helps assess if an infant's weight gain is within the normal range for their specific growth parameters.