Correct Answer: C

Rationale: A blood pH of 7.25 is a critical finding in diabetic ketoacidosis (DKA) as it indicates metabolic acidosis, which is a hallmark of this condition. In DKA, there is an accumulation of ketones in the blood, leading to increased acidity. The serum glucose level is typically elevated in DKA, often exceeding 250 mg/dL. A serum bicarbonate level less than 18 mEq/L is usually seen in DKA due to the metabolic acidosis. Urine specific gravity is not a specific indicator for DKA and may vary depending on the individual's hydration status. Therefore, the correct lab finding that confirms DKA in this scenario is a blood pH of 7.25.

Correct Answer: D

Rationale: A new nurse graduate should consider applying for a position as a nurse manager when she has developed leadership and clinical expertise. Option A, 'When she is comfortable in her current position,' is incorrect as comfort in the current position may not necessarily align with the skills required for a managerial role. Option B, 'When she begins mentoring other new nurses,' is not a definitive indicator of readiness for a managerial position. Option C, 'As soon as a position opens,' does not take into account the necessary skills and experience required for a nurse manager role. Therefore, the best time to consider applying for a nurse manager position is after developing the required leadership and clinical expertise.

Correct Answer: A

Rationale: The correct answer is A: Elevated blood glucose level and a low plasma bicarbonate. Diabetic ketoacidosis (DKA) is characterized by hyperglycemia, ketosis, and metabolic acidosis, reflected by a low plasma bicarbonate. Elevated blood glucose levels are a hallmark of DKA due to the body's inability to use glucose properly. Choices B, C, and D are incorrect. Decreased urine output is not a specific finding associated with DKA. Increased respirations and an increase in pH are not typical in DKA; in fact, respiratory compensation for the metabolic acidosis in DKA leads to Kussmaul breathing (deep, rapid breathing). A comatose state may occur in severe cases of DKA but is not a confirming finding for the diagnosis.

Correct Answer: A

Rationale: The correct answer is A. The nurse's role in patient education involves providing patients with the necessary information to make informed decisions about their care. This includes explaining treatment options, potential risks and benefits, and answering any questions the patient may have. Choice B is incorrect because while nurses do educate patients and families, the primary focus is on empowering patients to make informed decisions. Choice C is incorrect as providing written materials is a part of patient education but not the sole responsibility of the nurse. Choice D is incorrect because while nurses do provide instructions on managing care at home, patient education goes beyond just the home care aspect to encompass a broader understanding of the patient's condition and treatment.

Correct Answer: C

Rationale: The correct answer is to increase physical activity to help control blood glucose levels. Physical activity is essential in managing type 2 diabetes mellitus as it helps improve insulin sensitivity, control weight, and regulate blood sugar levels. Avoiding all forms of physical exercise (Choice A) is incorrect as exercise plays a crucial role in diabetes management. While limiting carbohydrate intake (Choice B) can be beneficial, setting a strict limit of less than 30 grams per day is too restrictive and may not be suitable for everyone. Consuming a high-protein, low-fat diet (Choice D) is generally a healthy choice, but it is not the primary lifestyle modification recommended for managing type 2 diabetes mellitus.