A mother brings her 6-year-old child, who has just stepped on a rusty nail, to the pediatrician's office. Upon inspection, the nurse notes that the nail went through the shoe and pierced the bottom of the child's foot. Which action should the nurse implement first?

Correct Answer: A

Rationale: The correct first action for the nurse to implement is to cleanse the foot with soap and water and apply an antibiotic ointment to prevent infection. In cases of puncture wounds like stepping on a rusty nail, the immediate concern is to reduce the risk of infection. Providing teaching about the need for a tetanus booster within the next 72 hours is important as well, but it should come after the wound is cleansed. Checking the child's temperature and transferring to the emergency department for a gamma globulin injection are not the immediate priorities in this scenario.

Correct Answer: C

Rationale: A serum bicarbonate level of 18 mEq/L indicates metabolic acidosis in a client with DKA, requiring immediate intervention. In DKA, the body produces excess ketones, leading to metabolic acidosis, which is reflected by a low serum bicarbonate level. Correcting the low serum bicarbonate is crucial to normalize the metabolic acidosis and improve the client's condition. While elevated serum glucose (choice A) and urine ketones (choice D) are characteristic of DKA, addressing the metabolic acidosis takes precedence. Serum potassium (choice B) levels may also need monitoring and management, but correcting the acidosis is the priority to prevent complications like cardiovascular collapse.

Correct Answer: D

Rationale: A serum pH of 7.28 indicates metabolic acidosis in a client with diabetic ketoacidosis (DKA), requiring immediate intervention. In DKA, the body produces excess ketones, leading to acidosis. Monitoring and correcting the pH level is crucial in managing DKA. Serum glucose levels may be high in DKA, but the immediate concern is correcting the acidosis to prevent complications. Serum potassium and bicarbonate levels are also important but not as immediately critical as correcting the acidosis in DKA.

Correct Answer: B

Rationale: The correct answer is B. Weight gain of 2 pounds in 24 hours is concerning in a client with rheumatoid arthritis on prednisone as it may indicate fluid retention or worsening heart failure. Increased joint pain, blood glucose level of 150 mg/dl, and fever of 100.4°F are important assessments but do not require immediate intervention compared to the potential severity of rapid weight gain.

Correct Answer: B

Rationale: A positive Chvostek's sign indicates hypocalcemia, which requires immediate intervention as it can lead to life-threatening complications. Fever, increased joint pain, and swelling in the joints are common symptoms in clients with rheumatoid arthritis but do not require immediate intervention like addressing hypocalcemia.