Adult Health Nursing Study Guide Answers

Correct Answer: B

Rationale: The research design being referred to in the question is an experimental design. An experimental study involves the manipulation of an independent variable, which is the intervention in this case, to determine its effect on a dependent variable. "Blinding" in research refers to the practice of withholding information about the intervention from certain individuals involved in the study, such as researchers, participants, or outcome assessors. Blinding is commonly used in experimental studies to reduce bias and ensure the integrity of the study results. This combination of intervention and blinding is a hallmark of experimental research designs.

Correct Answer: D

Rationale: Thyroid nodules are abnormal growths of thyroid cells that form a lump within the thyroid gland. When a thyroid nodule becomes large enough, it can cause compressive symptoms such as difficulty swallowing and breathing. The presence of colloid nodules on fine-needle aspiration biopsy indicates a benign and common type of thyroid nodule. In this case, the symptoms are likely due to the physical pressure exerted by the thyroid nodule, rather than an underlying endocrine disorder like Hashimoto's thyroiditis, Graves' disease, or diabetes mellitus. Therefore, the most likely cause of the patient's symptoms is the thyroid nodule itself.

Correct Answer: A

Rationale: Total patient care model of nursing is focused on the task-oriented approach to client care. In this model, the nurse is responsible for all aspects of care for a group of patients during their shift. It involves providing direct care, coordinating with other healthcare team members, and overseeing the patients' overall well-being. This approach emphasizes a comprehensive and holistic view of the patient's needs, where the nurse is actively involved in all aspects of care delivery.

Correct Answer: C

Rationale: Hurthle cell carcinoma is a type of thyroid cancer that arises from the Hurthle cells of the thyroid gland. Patients with Hurthle cell carcinoma may present with a thyroid nodule and signs of hyperthyroidism, which can mimic other thyroid disorders such as Graves' disease. Fine-needle aspiration biopsy revealing Hurthle cells and cellular atypia is suggestive of a Hurthle cell neoplasm, particularly Hurthle cell carcinoma. It is important to differentiate Hurthle cell carcinoma from benign Hurthle cell adenomas or other thyroid conditions to guide appropriate management and treatment.

Correct Answer: B

Rationale: In a pregnant woman presenting with severe abdominal pain and vaginal bleeding at 8 weeks gestation with a closed cervix, the most likely cause of these symptoms is a threatened abortion. A threatened abortion is a common complication of early pregnancy characterized by vaginal bleeding and lower abdominal pain without cervical dilation. The cervix remains closed, indicating that the pregnancy is still intact but at risk of potential miscarriage. Placenta previa typically presents with painless vaginal bleeding in the second or third trimester, whereas ectopic pregnancy usually presents with abdominal pain and vaginal bleeding in the setting of a closed cervix but is less likely at 8 weeks gestation. Gestational trophoblastic disease is a rare cause of vaginal bleeding in pregnancy and typically presents in the first trimester with signs of hyperemesis gravidarum, uterine enlargement, and elevated β-hCG levels.