Correct Answer: D

Rationale: The correct answer is D: Stapedectomy. This procedure is used to correct otosclerosis by removing the stapes bone and replacing it with a prosthetic device. This restores normal hearing by allowing sound waves to travel through the ear properly. Myringotomy (A) is a procedure to drain fluid from the middle ear, not to correct otosclerosis. Mastoidectomy (B) is the removal of infected mastoid air cells, not related to otosclerosis. Myringoplasty (C) is a surgical procedure to repair a perforated eardrum, not used for otosclerosis. Stapedectomy is the most appropriate choice for correcting otosclerosis as it directly addresses the abnormal bone growth in the middle ear.

Correct Answer: D

Rationale: The correct answer is D: Pathological fractures. In multiple myeloma, abnormal plasma cells can weaken the bones, leading to fractures even with minimal trauma. The nurse should monitor for signs of bone pain, decreased mobility, and pathological fractures to prevent complications. Uncontrolled bleeding (A) is not typically associated with multiple myeloma. Liver engorgement (B) is more commonly seen in conditions like congestive heart failure or liver disease. Respiratory distress (C) is not a common manifestation of multiple myeloma. Therefore, the nurse should focus on monitoring for pathological fractures as a priority in a patient with multiple myeloma.

Correct Answer: A

Rationale: The correct answer is A: Assessment. In the scenario, the nurse failed to assess the patient's condition promptly after the patient complained of feeling dizzy and light-headed. Assessment is the first phase of the nursing process and involves collecting data to identify the patient's health status. By not reassessing the patient's vital signs and symptoms, the nurse missed an opportunity to detect the worsening condition. The other choices are incorrect because the error occurred before diagnosis (B), implementation (C), and evaluation (D) phases. In diagnosis, the nurse identifies the patient's problems; in implementation, the nurse carries out the care plan; and in evaluation, the nurse assesses the effectiveness of interventions.

Correct Answer: B

Rationale: The correct answer is B: obtaining daily weights at the same time. This is crucial in monitoring fluid retention, a common issue in heart failure patients. Daily weights help detect early signs of fluid buildup. Option A is incorrect as physical activity is important for heart failure patients. Option C is incorrect as walking 2 miles daily may be too strenuous for some heart failure patients. Option D is incorrect as a high fiber diet is beneficial, but monitoring fluid retention is more critical in this case.

Correct Answer: B

Rationale: The correct answer is B because red, open sores on the oral mucosa are a common sign of stomatitis, which can be caused by chemotherapy. Stomatitis is characterized by inflammation and ulceration of the mouth lining. The other choices are incorrect because: A: White, cottage cheese-like patches are indicative of oral thrush, a fungal infection. C: Rust-colored sputum may indicate a respiratory condition or infection, not stomatitis. D: Yellow tooth discoloration is not typically associated with stomatitis, but can be caused by various factors such as poor oral hygiene or certain foods.