Correct Answer: B

Rationale: The correct answer is B: Thymectomy. Thymectomy involves the surgical removal of the thymus gland, which is often abnormal in individuals with myasthenia gravis. The thymus plays a role in the development of the immune system and can contribute to the autoimmune response seen in myasthenia gravis. By removing the thymus gland, the autoimmune response may be reduced, leading to substantial remission of symptoms. Choice A, Esophagostomy, involves creating a surgical opening into the esophagus and is not a treatment for myasthenia gravis. Choice C, Myomectomy, is the surgical removal of uterine fibroids and is unrelated to myasthenia gravis. Choice D, Spleenectomy, is the removal of the spleen and is not a standard treatment for myasthenia gravis.

Correct Answer: D

Rationale: The correct answer is D: Evaluation. In the nursing process, evaluation involves determining if the patient's condition has improved and if the expected outcomes have been met. The nurse assesses the patient's progress, compares it to the expected outcomes set during planning, and determines the effectiveness of the interventions implemented. This step ensures that the care provided is meeting the patient's needs and helps in making any necessary adjustments to the care plan. Incorrect choices: A: Assessment - This step involves gathering information about the patient's condition and needs at the beginning of the nursing process. B: Planning - Involves setting goals and developing a plan of care based on the assessment data. C: Implementation - Involves carrying out the interventions outlined in the care plan to meet the patient's goals.

Correct Answer: C

Rationale: The correct answer is C: Cold sensitivity. Severe anemia leads to decreased oxygen delivery to tissues, causing symptoms like pallor, fatigue, and dyspnea on exertion due to the body compensating for low oxygen levels. Cold sensitivity is not a common symptom associated with anemia. The other choices are directly related to severe anemia due to the lack of oxygen delivery to tissues.

Correct Answer: B

Rationale: The correct answer is B: L4-L5. This is because the L4-L5 intervertebral disc segment experiences the highest amount of mechanical stress and mobility in the lumbar spine, making it more prone to herniation. Additionally, nerve roots at this level innervate the lower extremities, making it a common site for symptoms such as sciatica. Choices A, C, and D are incorrect because herniations at those levels are less common due to lower mechanical stress and mobility compared to L4-L5.

Correct Answer: A

Rationale: Step-by-step rationale for why choice A is correct: 1. The American Cancer Society recommends yearly mammograms after age 40 for early breast cancer detection. 2. Mammograms are most effective for women aged 40 and older in detecting breast cancer. 3. Regular mammograms can help detect breast cancer at an early stage, improving treatment outcomes. Summary of why other choices are incorrect: B: Mammograms should start at age 40, not after the birth of the first child. C: Mammograms are not recommended after the first menstrual period; they should start at age 40. D: Mammograms should be done annually after age 40, not every 3 years between ages 20 and 40.