Correct Answer: A

Rationale: The correct answer is A: Assessing for mouth droop and decreased lateral eye gaze. After a radical mastoidectomy, the nurse should prioritize assessing for signs of facial nerve damage, such as mouth droop and decreased lateral eye gaze, which can indicate injury to the facial nerve during surgery. This is crucial as immediate intervention may be needed to prevent long-term complications. Choices B, C, and D are incorrect: B: Assessing for increased middle ear pressure and perforated ear drum is not the priority postoperative care for a radical mastoidectomy patient. C: Assessing for gradual onset of conductive hearing loss and nystagmus is not the priority as these are not immediate concerns postoperatively. D: Assessing for scar tissue and cerumen obstructing the auditory canal is not the priority as these are not immediate postoperative complications that require urgent attention.

Correct Answer: B

Rationale: Correct Answer: B - Use of a raised toilet seat Rationale: A raised toilet seat helps the patient with Parkinson's disease by providing additional height, making it easier for them to transition from sitting to standing. This aids in improving mobility and reducing the risk of falls. Furthermore, the raised seat can also promote proper positioning for bowel elimination, making the process more comfortable and effective. Incorrect Choices: A: Using a bedpan does not address the issue of transitioning from sitting to standing, nor does it aid in improving bowel elimination for the patient. C: Sitting quietly on the toilet every 2 hours may not directly address the physical challenges the patient is facing in transitioning from sitting to standing. D: Following the outlined bowel program is important, but it does not specifically address the physical support needed to transition from sitting to standing for a patient with Parkinson's disease.

Correct Answer: D

Rationale: The correct answer is D: Labyrinthitis. This condition presents with sudden onset vertigo, nausea, vomiting, tinnitus, and hearing loss, which are all symptoms described by the patient. Labyrinthitis is commonly caused by a viral infection affecting the inner ear, leading to inflammation of the labyrinth. This inflammation disrupts the balance and hearing functions of the inner ear, resulting in the symptoms mentioned. A: Ossiculitis involves inflammation of the middle ear bones, typically causing conductive hearing loss, not the sudden onset of vertigo and other symptoms described. B: Mnire's disease is characterized by recurrent episodes of vertigo, tinnitus, and hearing loss, but it typically does not present with sudden onset incapacitating vertigo. C: Ototoxicity is caused by exposure to certain medications or chemicals that damage the inner ear structures, leading to hearing loss. While hearing loss is a symptom, the sudden onset of vertigo is not typically associated with ototoxicity.

Correct Answer: B

Rationale: The correct answer is B because verifying tube placement before feeding is essential to prevent pulmonary aspiration. If the tube is not correctly positioned in the stomach, there is a risk of feeding going into the lungs. Observing the color of gastric contents (A) may not always indicate correct placement. Adding blue food coloring (C) is unnecessary and could cause confusion. Running the formula over 12 hours (D) does not address the risk of pulmonary aspiration and does not ensure proper tube placement.

Correct Answer: C

Rationale: The correct answer is C because it accurately explains the physiological change in the eye that leads to the need for bifocals. As individuals age, there is a gradual thickening of the lens of the eye, which affects the eye's ability to accommodate for near vision. This thickening makes it harder for the eye to focus on close objects, necessitating the use of bifocals to correct this near vision issue. Choices A, B, and D are incorrect because they do not provide a scientifically accurate explanation for the need for bifocals in older individuals. Option A is dismissive and does not address the specific change in the eye that leads to the need for bifocals. Option B implies aging as a general concept without specifying the relevant change in the eye. Option D incorrectly states that the eye gets shorter as we age, which is not the reason for needing bifocals.