Correct Answer: B

Rationale: Clear fluid draining from the ear can indicate cerebrospinal fluid leakage, which is a serious concern after a head injury. This leakage can signify a skull fracture or damage to the meninges, potentially leading to infection. Therefore, it should be reported immediately for further evaluation and management. Choices A, C, and D are typical findings after head trauma and are not as urgent as the presence of clear fluid draining from the ear.

Correct Answer: B

Rationale: The correct answer is B: 'Keep oxygen tanks upright at all times.' Oxygen tanks should be stored in an upright position to prevent leaks and accidents. Choice A is incorrect as smoking should never be allowed near oxygen due to the risk of fire. Choice C is incorrect as oxygen equipment should be stored in a well-ventilated area, not in a closet. Choice D is incorrect as oxygen tanks must be kept a minimum of 5 to 10 feet away from heat sources to prevent combustion. Therefore, the best practice is to keep oxygen tanks upright to ensure safety.

Correct Answer: D

Rationale: The correct answer is D: Oxygen saturation. The priority assessment in this situation is oxygen saturation because postoperative clients are at risk for respiratory complications, such as hypoxia due to factors like anesthesia effects, impaired lung function, or pain interfering with deep breathing. Monitoring oxygen saturation is crucial to detect any respiratory compromise early. Capillary refill, bowel sounds, and temperature are important assessments but are not the priority in this immediate postoperative period.

Correct Answer: D

Rationale: The correct answer is D. A sudden weight increase may indicate fluid retention, a complication of TPN therapy that should be reported. Options A, B, and C are within normal ranges and do not directly relate to TPN therapy complications. A blood glucose level of 120 mg/dL is normal, a white blood cell count of 8,000/mm³ is within the normal range, and a temperature of 37.2°C (99°F) is also normal.

Correct Answer: A

Rationale: The correct answer is A: Electrolyte imbalance and dehydration. Diabetic ketoacidosis can lead to imbalances in electrolytes such as potassium, sodium, and chloride, as well as dehydration due to excess urination and vomiting. These complications should be managed promptly with appropriate fluids and insulin. Choices B, C, and D are incorrect. Hypoglycemia and increased urination are not typical complications of diabetic ketoacidosis; kidney failure and respiratory distress may occur in severe cases but are not the primary complications. Liver failure and hypertension are not directly associated with diabetic ketoacidosis.