On x-ray, where should the central venous catheter be positioned?

• A. The tip should rest in the right atrium or vena cava
• B. In the left atrium
• C. In the right ventricle
• D. In the pulmonary artery

Answer: (A)

The main idea is where the catheter tip should sit in the veins near the heart. For a central venous catheter, the safest and most functional position is at the cavoatrial junction—the lower end of the superior vena cava where it meets the right atrium. On a chest X‑ray this means the tip sits in the vicinity of the SVC entering the RA. This placement ensures reliable central venous access and infusion while minimizing risks. If the tip were in the right ventricle or pulmonary artery, or high in the left atrium, it would be inappropriate and dangerous. Positioning the tip at the right atrial/vena cava region aligns with the chosen answer.