The healthcare provider is preparing to administer an intravenous antibiotic to a client with a central venous catheter. Which action is most important?

Correct Answer: D

Rationale: Using sterile technique when accessing the catheter is crucial to prevent infection in clients with a central venous catheter. This action helps maintain asepsis and reduces the risk of introducing pathogens into the catheter system. Flushing the catheter with heparin helps prevent occlusion but is not as crucial as ensuring sterile technique. Changing the dressing at the insertion site is important for assessing the site's condition but does not directly impact the administration of the antibiotic. Checking for blood return is essential to ensure proper catheter function, but sterile technique takes precedence to prevent infections.

Correct Answer: D

Rationale: In a client with diabetic ketoacidosis (DKA), urine output of 50 mL in 4 hours indicates oliguria, which is a concerning sign of decreased renal perfusion and potential renal failure. This finding requires immediate intervention to prevent further deterioration of kidney function.\n\nChoice A (Blood glucose of 200 mg/dL) is elevated but not the most urgent concern in this scenario. Choice B (Serum bicarbonate of 20 mEq/L) reflects metabolic acidosis, which is expected in DKA but does not require immediate intervention. Choice C (Blood pressure of 140/90 mm Hg) is slightly elevated but not acutely concerning in the context of DKA.

Correct Answer: C

Rationale: The correct answer is C: reduced rates of childhood obesity. A reduction in childhood obesity rates is a direct indicator that the program is successful in achieving its goal. Increased participation in physical activities (choice A) and higher attendance at nutrition education sessions (choice B) are positive outcomes, but they do not directly measure the program's effectiveness in reducing obesity. Greater knowledge of healthy eating habits (choice D) is important but does not guarantee a decrease in obesity rates. Therefore, the most significant outcome to determine the success of a childhood obesity reduction program is a reduction in obesity rates.

Correct Answer: D

Rationale: Creating a confidential hotline for reporting substance abuse should be prioritized because it offers a safe and accessible way for individuals to seek help and support for their substance abuse issues. This intervention allows individuals to report their concerns anonymously and seek guidance without fear of judgment or repercussions. Providing education on the dangers of substance abuse (Choice A) is important but may not be as immediately impactful as offering a direct avenue for help. Setting up a support group (Choice B) is valuable but may not reach as many individuals or provide the same level of anonymity as a confidential hotline. Partnering with law enforcement (Choice C) is crucial for addressing substance abuse issues from a legal perspective but may not directly address the immediate needs of individuals seeking help.

Correct Answer: D

Rationale: The drainage of clear, pale yellow fluid from the chest tube is an indication of proper chest tube functioning. Clear, pale yellow fluid signifies normal drainage from the pleural space without any signs of infection or complications. Choices A, B, and C are incorrect because continuous bubbling in the water-seal chamber, no fluctuation in the water-seal chamber, and intermittent bubbling in the suction control chamber are all indications of potential issues or malfunctioning of the chest tube system, which would require further assessment and intervention.