Correct Answer: C

Rationale: Rationale for Choice C (Correct Answer): 1. Multiple sclerosis (MS) commonly affects the optic nerve and chiasm. 2. MS is characterized by demyelination of nerves, leading to visual disturbances. 3. Optic nerve involvement results in vision problems, such as blurred vision. 4. Chiasm involvement can cause visual field deficits and color perception changes. Summary of Other Choices: A: Lateral, 3rd, and 4th ventricles - Incorrect. MS primarily affects the central nervous system, not ventricles. B: Pons, medulla, and cerebral peduncles - Incorrect. While these areas are part of the brainstem, they are not commonly affected in MS. D: Above areas - Incorrect. This choice is vague and does not specify any specific areas affected by MS.

Correct Answer: A

Rationale: Step-by-step rationale for why answer A is correct: 1. Safety: Morbidly obese patients are at higher risk of falls during transfers. 2. Assistance: Having two other personnel ensures safe transfer. 3. Weight distribution: Distributing the patient's weight among multiple helpers reduces strain. 4. Proper body mechanics: Allows for proper positioning and technique while assisting. Summary of why other choices are incorrect: B. Medication doesn't address the safety concern of transferring a morbidly obese patient. C. Reviewing activity orders is not the immediate action needed for the patient's first bathroom transfer. D. Offering a walker may not provide sufficient support for a morbidly obese patient during the transfer.

Correct Answer: D

Rationale: The correct answer is D: Ineffective tissue perfusion: Cerebral, cardiopulmonary, GI. Thrombocytopenia is a low platelet count, which can lead to impaired blood clotting and potential bleeding. Ineffective tissue perfusion is the most critical concern as it can lead to life-threatening complications like hemorrhage. Activity intolerance, impaired tissue integrity, and impaired oral mucous membranes are important but do not pose an immediate threat to the client's life compared to the risk of hemorrhage from thrombocytopenia.

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: 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.