A 40-year-old pregnant patient, currently hospitalized for preterm labor at 34 weeks’ gestation, is discussing potential delivery options with her provider based on the results of a fetal lung maturity test.

 Which prenatal test would the provider likely order to check for fetal lung maturity? 

Choice A rationale:

Diagnosing a fetus with a genetic disorder is outside the scope of practice for nurses. This task requires specialized training and expertise in genetics and diagnostic procedures, typically held by physicians such as geneticists, maternal-fetal medicine specialists, or genetic counselors.

Nurses play a crucial role in genetic counseling, but their responsibilities focus on:

Educating patients about genetic risks and testing options.

Obtaining informed consent for genetic testing.

Coordinating genetic testing appointments and procedures.

Providing emotional support and counseling to patients and families.

Facilitating communication between patients, families, and other healthcare providers.

Advocating for patients' rights and needs.

Choice B rationale:

Providing emotional support is a core component of nursing care, including genetic counseling. Nurses are trained to provide empathetic and compassionate support to patients and families who are facing the challenges of genetic conditions. This includes:

Active listening and validation of feelings.

Assisting with coping mechanisms and stress management.

Connecting patients with support groups and resources.

Promoting resilience and hope.

Choice C rationale:

Identifying at-risk families is a vital role for nurses in genetic counseling. By recognizing families with a history of genetic disorders or those who exhibit risk factors, nurses can initiate early intervention and preventive measures. This includes:

Taking a thorough family history.

Assessing risk factors and potential genetic concerns.

Educating families about their potential risks.

Referring families for genetic counseling and testing as appropriate.

Choice D rationale:

Collaboration with other healthcare providers and referral for specialized care are essential aspects of genetic counseling. Nurses often work within interdisciplinary teams to provide comprehensive care for patients with genetic concerns. This includes:

Communicating with geneticists, genetic counselors, and other specialists.

Coordinating referrals for genetic testing, counseling, and treatment.

Ensuring continuity of care across different healthcare settings.

The correct answer is C. Only one copy of the variant gene is needed for expression of the disease.

Choice A rationale:

Huntington's disease (HD) is not typically diagnosed in childhood. While symptoms can sometimes manifest in adolescence or early adulthood, the average age of onset is between 30 and 50 years old.

Early-onset HD, which occurs before the age of 20, is much rarer and accounts for only about 5-10% of cases.

It's crucial to convey accurate information about the typical age of onset to avoid unnecessary anxiety and unwarranted testing in children.

Choice B rationale:

The statement "If you are a carrier, there is a 25% chance your child will inherit the gene" is not entirely accurate for autosomal dominant disorders like HD.

If a parent has HD, each child has a 50% chance of inheriting the mutated gene, not 25%. This is because the parent with HD has one mutated copy of the gene and one normal copy.

During conception, each child randomly receives one copy of the gene from each parent. Therefore, there's a 50% chance the child will receive the mutated copy and a 50% chance they'll receive the normal copy.

Choice D rationale:

Referral to a genetic counselor is essential for all individuals with a family history of HD, regardless of their carrier status.

Genetic counselors can provide comprehensive information about HD, including: Inheritance patterns

Risk assessment

Testing options

Reproductive options

Support resources

Psychosocial counseling

They can assist individuals in making informed decisions about testing, family planning, and management of the condition.

Choice C is the correct answer because:

HD is indeed an autosomal dominant disorder, meaning that only one copy of the mutated gene is needed for an individual to develop the disease.

This contrasts with autosomal recessive disorders, which require two copies of the mutated gene (one from each parent) for the disease to manifest.

Understanding the pattern of inheritance is crucial for accurate risk assessment and genetic counseling.