Correct Answer: B

Rationale: Children diagnosed with hypertrophic cardiomyopathy should not participate in competitive sports such as football due to the potential risk of sudden cardiac events. Physical activity and sports with lower intensity may be allowed, but organized competitive sports with high intensity (such as football) are generally contraindicated. It is important for the health care team to prioritize the child's safety and well-being over sports participation in cases of cardiomyopathy. The nurse should communicate this information to the mother to help her understand the importance of limiting the child's physical activities to reduce the risk of complications related to hypertrophic cardiomyopathy.

Correct Answer: B

Rationale: Given that the patient has a compound, open fracture of the femur and is undergoing immediate surgery, the most critical nursing diagnosis in the immediate postoperative period would be the risk for infection. Open fractures are particularly susceptible to infection due to the exposure of the fracture site to external contaminants. Postoperative care should prioritize infection prevention measures like sterile dressing changes, administration of prophylactic antibiotics, and close monitoring for signs of infection such as increased pain, redness, swelling, or drainage from the wound. Mitigating the risk of infection is crucial to prevent complications and promote optimal healing of the fracture. While the other diagnoses are relevant, addressing the risk for infection takes precedence in this scenario.

Correct Answer: C

Rationale: Nitrates are commonly prescribed for the management of angina. These agents work by dilating blood vessels, which leads to improved blood flow to the heart muscle and decreased workload on the heart. This results in reduced intensity and frequency of angina episodes by increasing oxygen supply to the heart and decreasing its demand. Nitrates can be administered sublingually, orally, or topically to provide prompt relief of chest pain during an angina episode. Thorough patient education should be provided regarding the proper use of nitrates and potential side effects.

Correct Answer: D

Rationale: Vomiting can lead to dehydration and electrolyte imbalances due to the loss of fluids and electrolytes. In response to these physiologic changes caused by vomiting, aldosterone secretion will increase. Aldosterone is a hormone produced by the adrenal glands that acts on the kidneys to increase reabsorption of sodium and water, helping to maintain blood pressure and electrolyte balance. By increasing aldosterone secretion, the body aims to retain more sodium and water to counteract the effects of vomiting and prevent dehydration.

Correct Answer: A

Rationale: A blood pressure of 142/92 mmHg in a client in the third trimester of pregnancy is elevated and could indicate the development of preeclampsia, a serious hypertensive disorder that can have adverse effects on both the mother and the fetus. Preeclampsia is characterized by high blood pressure accompanied by signs of organ damage, such as proteinuria and changes in other laboratory values. Immediate intervention is required in this situation, as preeclampsia can lead to complications such as seizures (eclampsia), stroke, and placental abruption. It is essential for the nurse to further assess the client and notify the healthcare provider promptly for appropriate management.