Pediatric HESI

Correct Answer: A

Rationale: Duchenne muscular dystrophy is an X-linked recessive disorder caused by mutations in the DMD gene on the X chromosome. This disorder primarily affects males because they have one X chromosome, inherited from their mothers, who may be carriers of the mutated gene. Females have two X chromosomes, providing a protective effect as the normal gene on one X chromosome can compensate for the mutated gene on the other. Therefore, the nurse should explain to the parents that Duchenne muscular dystrophy is an inherited X-linked recessive disorder, which is why their son has the disease and why there is a risk of passing it on to future sons.

Correct Answer: C

Rationale: Allowing the child to play with a stethoscope can help distract them, making it easier to auscultate breath sounds. This approach can create a more cooperative and engaging environment for the child, facilitating a more accurate assessment of their breath sounds.

Correct Answer: D

Rationale: A significant drop in heart rate and blood pressure should be reported immediately as it may indicate worsening of the congenital heart defect. A decrease in blood pressure may suggest poor cardiac output and compromised perfusion, requiring urgent medical attention.

Correct Answer: A

Rationale: The correct answer is A. Duchenne muscular dystrophy is an X-linked recessive disorder that primarily affects males. It is crucial for the nurse to explain to the parents that this condition follows an inheritance pattern where the gene mutation responsible for the disorder is located on the X chromosome. Males have only one X chromosome, so if they inherit the mutated gene, they will develop the disease. Females, on the other hand, have two X chromosomes, providing a backup copy that can compensate for the mutation. Understanding this inheritance pattern is essential for family planning decisions, as the risk of passing on the disorder to future children can be explained based on this genetic inheritance.

Correct Answer: C

Rationale: In a child with nephrotic syndrome, fluid volume excess is a priority nursing diagnosis due to the risk of edema and related complications. This patient may experience significant fluid retention, leading to edema, hypertension, and potential respiratory distress. Monitoring and managing fluid volume excess are crucial in preventing further complications and supporting the child's health during nephrotic syndrome.