Correct Answer: A

Rationale: To administer a total of 300 mg daily (150 mg PO BID), the nurse should give 20 mL of the syrup. This is calculated by dividing the total daily dose (300 mg) by the concentration of the syrup (15 mg/mL), which equals 20 mL. Choice B (15 mL), C (25 mL), and D (10 mL) are incorrect because they do not accurately calculate the required volume of syrup needed to deliver the prescribed dose.

Correct Answer: A

Rationale: Corrected Rationale: Dehydration in the elderly is often signaled by dry mouth, confusion, and decreased skin turgor due to reduced fluid intake. Choice A is the correct answer as these are common signs and symptoms of dehydration in the elderly.\nIncorrect Rationales: Option B (Increased heart rate and muscle cramps) are more associated with conditions like hyperthyroidism or electrolyte imbalances rather than dehydration. Option C (Fever, rapid breathing, and increased urine output) are signs of other medical conditions such as infections or diabetes insipidus. Option D (Increased thirst and difficulty walking) can be seen in various situations but are not specific signs of dehydration in the elderly.

Correct Answer: A

Rationale: The term 'fidelity' specifically refers to the agreement to keep promises. Fidelity in healthcare ethics emphasizes the importance of healthcare professionals keeping their commitments to patients. Choice B, 'Non-maleficence,' relates to the ethical principle of doing no harm. Choice C, 'Autonomy,' refers to respecting a patient's right to make decisions about their own healthcare. Choice D, 'Justice,' pertains to fairness and equality in the distribution of healthcare resources.

Correct Answer: A

Rationale: Correct Answer: A. When assessing a patient with a potential myocardial infarction, it is crucial to assess symptoms, monitor vital signs like blood pressure and heart rate, and order an electrocardiogram (ECG) to evaluate for cardiac abnormalities. Choice B is incorrect because administering medications should be based on the findings of the assessment and diagnostic tests, not administered indiscriminately. Choice C is incorrect because the administration of thrombolytics and oxygen therapy should be based on specific criteria and should be done in a controlled setting. Choice D is incorrect as educating the patient on lifestyle changes is important for prevention but is not the immediate priority when managing a potential myocardial infarction.

Correct Answer: A

Rationale: Corrected Rationale: Bradycardia is a common sign of digoxin toxicity. Digoxin, a medication used to treat heart failure, works by slowing down the heart rate and increasing the force of heart contractions. Excessive levels of digoxin can lead to toxicity, causing bradycardia (slow heart rate), among other symptoms. Tachycardia (fast heart rate) and hypotension (low blood pressure) are not typically associated with digoxin toxicity. Increased appetite is not a recognized sign of digoxin toxicity; instead, gastrointestinal symptoms like nausea, vomiting, and anorexia are more common.