Correct Answer: D

Rationale: The presentation of a small, painless, well-defined nodule on the lateral aspect of the neck, above the clavicle, along with the cytology showing clusters of polygonal cells with abundant granular cytoplasm is most indicative of a parathyroid adenoma. Parathyroid adenomas are benign tumors derived from the parathyroid gland that can produce excess parathyroid hormone (PTH), leading to hyperparathyroidism. The characteristic histology of parathyroid adenomas includes chief cells with abundant granular cytoplasm.

Correct Answer: B

Rationale: Health education is a crucial component of public health aimed at promoting health, preventing diseases, and empowering individuals to make informed decisions about their health. It is not limited to only professionals like nurses but is the responsibility of every health worker across various disciplines. Health workers, including doctors, community health workers, public health educators, and others, play a vital role in delivering health education to the community they serve. By ensuring that health education is a shared responsibility among all health workers, a more comprehensive and effective approach to public health promotion can be achieved. It is continuously evolving to adapt to changing health needs and challenges, making it dynamic rather than remaining constant. Therefore, option B is the most accurate statement regarding health education in public health.

Correct Answer: C

Rationale: For managing a conscious patient with a dislocated shoulder, the appropriate action is to provide analgesia to help manage the pain and discomfort associated with the dislocation. Applying ice packs to the affected shoulder can also help reduce swelling and provide some relief. It is important to refrain from attempting to reduce the dislocation by pulling on the affected arm, as this can cause further damage and worsen the injury. Applying a splint to immobilize the arm in the dislocated position is also not recommended, as this can lead to complications and hinder the reduction process. Administering intravenous fluids to prevent dehydration is not directly related to managing a dislocated shoulder in a conscious patient.

Correct Answer: A

Rationale: Estrogen exerts negative feedback on the hypothalamus by inhibiting the release of GnRH (Gonadotropin-Releasing Hormone). GnRH plays a crucial role in the regulation of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) production from the pituitary gland. By inhibiting the release of GnRH, estrogen ultimately leads to a decrease in FSH and LH levels. This process helps to suppress the maturation of the egg and ovulation, providing contraceptive effects.

Correct Answer: A

Rationale: Pelvic floor dysfunction can contribute to a prolonged second stage of labor by impairing the ability of the woman to effectively push during contractions. This can result in inefficient pushing efforts and slow fetal descent. The nurse should assess for signs and symptoms of pelvic floor dysfunction, such as difficulty controlling bowel movements or urine leakage, as addressing this issue may help improve the progress of labor. Maternal fatigue, fetal macrosomia (larger than average baby size), and uterine hyperstimulation are other factors that can impact labor but are less likely to specifically contribute to ineffective pushing efforts and slow fetal descent in the second stage of labor.