A male newborn is diagnosed with polycystic kidneys which requires autosomal dominant transmission.One of the parents is believed to have this genetic disease.
The nurse's teaching should be based on the fact that with autosomal dominant inheritance:

50% of the offspring have a chance of developing the disease from the affected parent.

Diseases are transmitted from a carrier mother to her son.

All of the offspring will develop the disease.

50% of the offspring will be carriers of the disease from the affected parent.

Answer and Explanation

The Correct Answer is A

Choice A rationale

50% of the offspring have a chance of developing the disease from the affected parent. Autosomal dominant inheritance means that a single copy of the altered gene in each cell is sufficient to cause the disorder. Thus, each child of an affected parent has a 50% chance of inheriting the condition.

Choice B rationale

Diseases transmitted from a carrier mother to her son typically describe X-linked recessive inheritance, not autosomal dominant. In autosomal dominant conditions, both males and females can be affected, and it doesn't depend on the sex of the parent transmitting the gene.

Choice C rationale

All of the offspring will develop the disease is incorrect. In autosomal dominant inheritance, there is a 50% chance of passing the altered gene to the offspring, not 100%.

Choice D rationale

50% of the offspring will be carriers of the disease from the affected parent is incorrect for autosomal dominant inheritance. There are no "carriers" in autosomal dominant diseases; individuals either have the disease or they don't, based on whether they inherit the altered gene.

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Correct Answer is A

Explanation

Choice A rationale

At 9 weeks gestation, the primary purpose of an ultrasound is to confirm the presence of a fetal heartbeat, which indicates a viable pregnancy.

Choice B rationale

Chromosomal defects are typically assessed using different tests, such as chorionic villus sampling or amniocentesis, rather than an ultrasound at this early stage.

Choice C rationale

Fetal lung maturity cannot be assessed at 9 weeks gestation because the lungs are not yet developed. This assessment is usually done later in pregnancy if preterm delivery is anticipated.

Choice D rationale

The position of the fetus in utero is not a concern at this early stage of pregnancy. Fetal positioning becomes relevant later in pregnancy, closer to delivery.

A. Obtain the client's personal and family medical history. B. Obtain information about prior pregnancies. C. Check the client's urine with a reagent strip. D. Schedule the client for prenatal laboratory testing. E. Discuss chorionic villus sampling with the client.

Correct Answer is A

Explanation

Choice A rationale

Obtaining the client's personal and family medical history is essential during the initial prenatal visit. This history helps identify any genetic disorders or chronic conditions that might affect the pregnancy. It also provides insight into the client's overall health and any potential risk factors.

Choice B rationale

Information about prior pregnancies is important but not the first priority. Prior pregnancy information can provide insights into previous complications, but a comprehensive medical history should come first.

Choice C rationale

Checking the client's urine with a reagent strip is not the primary action during an initial visit. Urine tests are useful for detecting infections and certain conditions, but they come after a thorough history has been obtained.

Choice D rationale

Scheduling the client for prenatal laboratory testing is necessary, but it follows the initial assessment and history-taking. Laboratory tests help confirm the pregnancy and assess overall health but are not the first step.

Choice E rationale

Discussing chorionic villus sampling (CVS) is premature at this stage. CVS is a prenatal test conducted around 10-13 weeks for detecting chromosomal abnormalities, but it's not relevant during the initial visit without understanding the client's medical history.

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A male newborn is diagnosed with polycystic kidneys which requires autosomal dominant transmission.One of the parents is believed to have this genetic disease. The nurse's teaching should be based on the fact that with autosomal dominant inheritance:

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is A

Explanation

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A male newborn is diagnosed with polycystic kidneys which requires autosomal dominant transmission.One of the parents is believed to have this genetic disease.
The nurse's teaching should be based on the fact that with autosomal dominant inheritance: