A 15-year-old patient is to receive antihemophilic factor (Factor VIll) replacement therapy. He asks the nurse, "Why does this always happen to me? How come my sisters don't have hemophilia?”. The nurse's response should be based on the understanding that hemophilia is characteristic of which type of hereditary disorder?
X-linked dominant.
Autosomal recessive.
Autosomal dominant.
X-linked recessive.
The Correct Answer is D
Choice A rationale:
X-linked dominant disorders are characterized by a mutation on the X chromosome that results in the expression of the trait in both males and females. Hemophilia, however, is more commonly associated with males, which is not consistent with an X-linked dominant pattern.
Choice B rationale:
Autosomal recessive disorders require the inheritance of two mutated alleles, one from each parent, to express the trait. Hemophilia does not follow this pattern, as the patient's sisters do not have the condition despite having affected parents.
Choice C rationale:
Autosomal dominant disorders only require the inheritance of one mutated allele from an affected parent to express the trait. Hemophilia does not align with an autosomal dominant pattern, as the patient's sisters would likely be affected if it were.
Choice D rationale:
Hemophilia is a classic example of an X-linked recessive disorder. The gene responsible for producing clotting factor is located on the X chromosome, and males have only one X chromosome, making them more susceptible to the disorder. Females, with two X chromosomes, usually act as carriers unless both X chromosomes carry the mutation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
After undergoing cleft palate repair, it's appropriate to inform the mother that her child may want to be close to her most of the time. The child might feel more secure in the presence of their caregiver during the recovery period.
Choice B rationale:
Having the child sleep in the same bed is not typically recommended due to safety concerns, especially after surgery.
Choice C rationale:
Increased independence is not a common immediate response after hospitalization, especially for a young child recovering from surgery.
Choice D rationale:
While attention during hospitalization is important, it wouldn't necessarily translate to the need for stricter limits. Post-hospitalization care should focus on the child's comfort and recovery rather than punitive measures.
Correct Answer is D
Explanation
Answer is d. Monitor the capillary refill time in the toes on both feet. This is crucial for assessing circulation and ensuring that the cast is not impairing blood flow, which is a priority in cast care.
Choice A rationale:
Ensuring the appropriate care for a wet plaster cast is essential to prevent complications such as impaired circulation, discomfort, or skin breakdown. Keeping the cast covered with a lightweight blanket, as suggested in option A, may seem like a logical step to protect it from external elements and maintain warmth. However, covering a wet cast can actually retain moisture, which can slow the drying process. Moisture retention within the cast can lead to prolonged drying times, increasing the risk of complications such as skin maceration or discomfort for the patient. Therefore, while the intention behind covering the cast is to provide comfort, it may inadvertently prolong the drying process and contribute to potential complications.
Choice B rationale:
Maintaining increased humidity in the patient room, as mentioned in option B, might appear beneficial to aid in the drying process of the plaster cast. However, while humidity can influence the drying time of the cast, excessive humidity can have adverse effects on the integrity of the cast. High humidity levels can prolong the drying process by inhibiting the evaporation of moisture from the cast material. Additionally, increased humidity can compromise the structural integrity of the cast, potentially leading to weaknesses or deformities. Therefore, while it's important to consider environmental factors in cast care, maintaining excessively high humidity levels may not be advisable and could contribute to complications in the drying and integrity of the cast.
Choice C rationale:
Option C suggests using only the tips of the fingers when handling the wet cast. While it's crucial to handle a wet cast with care to avoid causing damage or deformities, limiting handling to just the fingertips may not provide adequate support or control. Plaster casts can be fragile when wet, and improper handling techniques may lead to misshaping or weakening of the cast structure. Additionally, relying solely on the fingertips for handling may increase the risk of inadvertently applying uneven pressure or causing accidental damage to the cast material. Therefore, while the intention behind this option is to promote gentle handling, it may not provide sufficient support or control to ensure the integrity of the wet cast.
Choice D rationale:
Monitoring the capillary refill time in the toes on both feet, as indicated in option D, is the most appropriate action for the nurse to take in this scenario. Capillary refill time is a valuable indicator of peripheral circulation and tissue perfusion. By assessing the capillary refill time in the toes, the nurse can evaluate the adequacy of blood flow to the extremities and detect any potential impairment caused by the plaster hip spica cast. Prolonged capillary refill time may suggest compromised circulation, which can lead to serious complications such as ischemia or tissue necrosis if left unaddressed. Therefore, regular monitoring of capillary refill time is essential for early detection of circulation problems and timely intervention to ensure patient safety and optimal outcomes.
In conclusion, while each option may seem plausible at first glance, careful consideration of the potential implications reveals that monitoring capillary refill time in the toes on both feet is the most appropriate action for the nurse to take when caring for a patient with a wet plaster hip spica cast. This proactive approach prioritizes patient safety by ensuring adequate circulation and minimizing the risk of complications associated with impaired blood flow. By adhering to evidence-based practice guidelines and maintaining vigilance in monitoring patient status, healthcare professionals can optimize outcomes and promote the effective healing and management of patients with plaster casts.
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