A male infant was born two days ago, and the nurse assessed the infant as having single palmar crease, poor muscle tone, and low-set ears. Genetic testing of the infant has been ordered by the physician
Which statement should the nurse include when explaining this plan to the parents?
1. "We will draw blood from both of you to check for abnormal genes."
2. "Your son will have his chromosomes sampled and then studied."
3. "When your son is 2 years old, he will need a blood test."
4. "After your breast milk is in, we will draw blood from your son."
Correct Answer: 2
Rationale 1: The parents' chromosomes do not need to be assessed in order to diagnose the infant.
Rationale 2: A single palmar crease, poor muscle tone, and low-set ears could indicate trisomy 18. This diagnosis is confirmed by chromosomal analysis of the infant, using either a buccal smear or a blood specimen.
Rationale 3: The chromosome studies will be undertaken as soon as possible.
Rationale 4: It is not necessary to wait until the breast milk has come in.
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