When infants are born prematurely, the chronological age on the ...

[burchfield96]

When infants are born prematurely, the chronological age on the growth chart:
 
  a. is the same as for other children after 6 months
  b. is not accurate, and a special chart for preemies must be used
  c. must be corrected subtracting weeks or months of prematurity until age 18 months old
  d. must be corrected until age 18, subtracting the period of prematurity from the age

Question 2

A definitive diagnosis of Down syndrome is based on:
 
  a. facial features c. physical findings
  b. family history d. karyotyping

[Galvarado142]

Answer to Question 1

C

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A Incorrect. When infants are born prematurely, the chronological age on the growth chart is not the same as for other children after 6 months.
B Incorrect. When infants are born prematurely, the chronological age on the growth chart is not accurate, but you use the same growth chart.
C Correct. When infants are born prematurely, the chronological age on the growth chart must be corrected subtracting weeks or months of prematurity until age 18 months old.
D Incorrect. When infants are born prematurely, the chronological age on the growth chart must be corrected until age 18 (months or years, not specified).

Answer to Question 2

D

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A Incorrect. A definitive diagnosis of Down syndrome is not based on facial features.
B Incorrect. A definitive diagnosis of Down syndrome is not based on family history.
C Incorrect. A definitive diagnosis of Down syndrome is not based on physical findings.
D Correct. A definitive diagnosis of Down syndrome is based on karyotyping. This involves identification of the chromosomes' appearance, performed by growing cells from a blood or tissue sample, staining them during the metaphase stage of replication, and scanning them with a microscope. Chromosomes are examined, revealing extra genetic material.