Correct Answer: B

Rationale: The correct first intervention in the treatment of a client with diabetic ketoacidosis (DKA) is to start an intravenous line and infuse normal saline. This is essential for fluid resuscitation to restore intravascular volume and improve perfusion. Administering intravenous insulin can lead to further potassium depletion without first addressing dehydration and electrolyte imbalances. Monitoring serum potassium levels is important but should follow fluid resuscitation to avoid life-threatening hypokalemia. Obtaining an arterial blood gas (ABG) is necessary to assess the acid-base status but is not the initial priority when managing DKA.

Correct Answer: C

Rationale: The correct answer is C because scientific management focuses on improving efficiency through the analysis of tasks and work processes. Choice A is more aligned with a human relations-based approach, which emphasizes motivation and relationships. Choice B reflects recognition and morale boosting, which is also characteristic of the human relations approach. Choice D involves conflict resolution and promoting mutual understanding, which is related to the human relations approach rather than scientific management.

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: 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: B

Rationale: Monitoring blood glucose levels frequently is crucial for preventing complications in diabetes. By keeping a close eye on blood glucose levels, healthcare providers can intervene in a timely manner if levels are out of range, thus reducing the risk of long-term complications such as nerve damage, kidney disease, and vision problems. Choices A, C, and D are incorrect because while monitoring blood glucose levels may indirectly contribute to adjusting insulin doses, identifying the best diet, and reducing the need for medications, the primary purpose is to prevent complications through timely interventions.