Correct Answer: C

Rationale: The correct answer is C: Confusion. Hypernatremia is an electrolyte imbalance characterized by high sodium levels in the blood. Confusion is a common symptom as high sodium levels can affect brain function. Dry skin (A) is more indicative of dehydration, tachycardia (B) is a symptom of various conditions, and pale coloring (D) is not specific to hypernatremia. Confusion is a key indicator that the nurse should assess for when monitoring for hypernatremia.

Correct Answer: A

Rationale: The correct answer is A: Hearing loss, vertigo, and tinnitus. Meniere's disease is characterized by a triad of symptoms: recurrent episodes of vertigo, sensorineural hearing loss, and tinnitus. Vertigo is a spinning sensation, hearing loss affects the inner ear, and tinnitus is ringing in the ear. Nausea, vomiting, pain, nystagmus, or headache are not typically part of the classic triad of Meniere's disease symptoms. Therefore, option A is the most appropriate choice based on the specific symptomatology associated with Meniere's disease.

Correct Answer: B

Rationale: The correct answer is B: maintain blood pressure control. After PTCA, the priority goal is to ensure stable hemodynamics. Maintaining blood pressure control is crucial to prevent complications such as bleeding or thrombosis. Choices A, C, and D are incorrect because preventing fluid volume deficit, decreasing myocardial contractility, and minimizing dyspnea are not immediate priorities post-PTCA. Oxygenation and hemodynamic stability take precedence over these concerns.

Correct Answer: A

Rationale: The correct answer is A: Urine output increased. Furosemide is a loop diuretic that works by increasing urine output, thus helping to reduce fluid volume in the body. This effect is crucial in managing conditions like heart failure and edema. Increased urine output indicates that the medication is working as intended. Choice B: Heart rate increased is incorrect as furosemide does not directly affect heart rate. Choice C: Serum potassium decreased is incorrect as furosemide can lead to potassium loss, but this is not the primary indicator of its effectiveness. Choice D: Pulse pressure increased is incorrect as furosemide does not typically impact pulse pressure.

Correct Answer: C

Rationale: The correct answer is C: Inform the registered nurse. This is the best course of action as the LPN should escalate the situation to a higher level of care by involving the registered nurse who can further assess the patient's concerns and provide appropriate interventions. A. Reassuring the patient may not address the underlying fear and may not be sufficient to alleviate their anxiety. B. Providing statistics about surgery death rates may further escalate the patient's fears and anxiety, causing more harm than good. D. Involving the family to comfort the patient may not address the patient's specific concerns and may not be within the family's scope of understanding or expertise to effectively address the situation. Informing the registered nurse allows for a more comprehensive assessment and appropriate intervention to address the patient's fears and concerns in a holistic manner.