A nurse is collecting data from an infant at a well-child visit.
The nurse should expect the infant to double his birth weight by which of the following ages?
3 months.
6 months.
9 months.
12 months.
The Correct Answer is B
Choice A rationale
While some babies may experience rapid growth and double their birth weight within the first 3 months, this is not typically expected. Most infants are expected to double their birth weight by 5 to 6 months of age.
Choice B rationale
Most infants are expected to double their birth weight by 5 to 6 months of age. Therefore, by the age of 6 months, it would be expected for an infant to have doubled their birth weight.
Choice C rationale
By 9 months, most infants would have already doubled their birth weight. The typical expectation is for infants to double their birth weight by 5 to 6 months of age.
Choice D rationale
By 12 months, most infants would have already doubled their birth weight and are on their way to tripling their birth weight. Therefore, expecting an infant to double their birth weight by 12 months would be beyond the typical timeframe.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
At 10 months, it is normal for an infant to not be able to recognize objects by name. Language development varies greatly among children, and many do not start to understand and respond to simple requests and recognize common objects until around 12 months.
Choice B rationale
The ability to turn pages in a book is a fine motor skill that typically develops around 12 to 18 months. Therefore, it is normal for a 10-month-old infant to not have this ability.
Choice C rationale
Peek-a-boo is a common game that many infants enjoy. However, not all infants may show interest in this game. Lack of interest in peek-a-boo is not necessarily a cause for concern.
Choice D rationale
By 10 months, most infants can sit without support. If a 10-month-old infant does not sit steadily without support, it could indicate a delay in motor development and should be reported to the provider.
Correct Answer is D
Explanation
Choice A rationale
While the genitourinary system can be affected in individuals with Down syndrome, it is not the most commonly affected body system. Down syndrome is a genetic condition where a person is born with an extra chromosome. This can affect how their brain and body develop, leading to both physical and mental challenges.
Choice B rationale
The reproductive system is not the most commonly affected body system in individuals with Down syndrome. While individuals with Down syndrome can have reproductive health issues, these are not as common as issues with other body systems.
Choice C rationale
The gastrointestinal system can be affected in individuals with Down syndrome, but it is not the most commonly affected body system. Some individuals with Down syndrome may experience gastrointestinal issues such as constipation or gastroesophageal reflux disease.
Choice D rationale
The cardiovascular system is the most commonly affected body system in individuals with Down syndrome. Almost half of babies with Down syndrome have congenital heart disease (CHD), the most common type of congenital anomaly. CHD can lead to high blood pressure in the lungs, an inability of the heart to effectively and efficiently pump blood, and cyanosis (blue-tinted skin caused by reduced oxygen in the blood)3.
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