A patient is distressed to learn that a sibling is diagnosed with both neurologic and cognitive manifestations of Huntington disease. When the patient asks the nurse how to determine the incidence of the disease, which answer is most appropriate?
"All family members are now at risk for the disease."
"Only your children need to be tested for a genetic connection."
"If you are not diagnosed by age 20, you are considered safe."
"You definitely need to have genetic testing for the disease."
The Correct Answer is A
A. Huntington disease is an autosomal dominant genetic disorder, meaning that if one parent has the gene, each child has a 50% chance of inheriting it. Therefore, all family members are at risk for the disease.
B. While genetic testing may be relevant for the patient’s children, it is not limited only to them. The patient and other family members are also at risk and may choose to be tested.
C. Huntington disease typically manifests between ages 30 and 50, and there is no age cutoff for determining risk. Early diagnosis may occur, but not being diagnosed by age 20 does not rule out the disease.
D. While genetic testing can confirm the presence of the gene, it is not the only way to determine risk. Family history and clinical symptoms are also key factors in understanding the risk for Huntington disease.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Vitamin K is the antidote for excessive anticoagulation caused by warfarin. It helps to reverse the effects of warfarin by promoting the synthesis of clotting factors.
B. Naloxone is used to reverse opioid overdose, not related to warfarin or its effects.
C. Disulfiram is used to treat alcohol use disorder by causing unpleasant effects when alcohol is consumed, and is unrelated to warfarin.
D. Protamine is used to reverse the effects of heparin, not warfarin.
Correct Answer is D
Explanation
A. Neutropenic precautions are used for clients with compromised immune systems, such as those undergoing chemotherapy or bone marrow suppression. This is not appropriate for bacterial meningitis.
B. Contact isolation is used for infections that are transmitted through direct contact with the patient or their environment, such as MRSA or C. difficile. Bacterial meningitis, however, is spread through respiratory droplets.
C. Universal precautions refer to standard infection control practices (like hand hygiene and wearing gloves) that apply to all patients, but specific precautions are needed for certain infections like bacterial meningitis.
D. Droplet isolation is necessary for bacterial meningitis, as it is transmitted via respiratory droplets from coughing, sneezing, or talking. This isolation prevents the spread of the infection to others in close proximity.
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