Serendipitous detection of an errant central venous catheter

Area of Science:

• Nuclear medicine
• Radiopharmaceutical administration
• Medical imaging

Background:

• Central venous catheters (CVCs) are crucial for administering medications and fluids.
• Accurate CVC placement is essential for patient safety and effective treatment.
• Radionuclide imaging is widely used for diagnostic purposes.

Observation:

• A gastrointestinal (GI) bleeding study using Technetium-99m (Tc-99m) labeled red blood cells revealed unexpected radiotracer distribution.
• The radiopharmaceutical was injected through an existing central venous catheter.
• The imaging demonstrated the radiotracer within the pleural space, indicating catheter malposition.

Findings:

• The central venous catheter was inappropriately placed in the pleural space, not in the intended central vein.
• The injection of Tc-99m labeled red blood cells serendipitously highlighted the incorrect CVC position.
• This incidental finding allowed for the evaluation of both the position and patency of the central venous line.

Implications:

• Radionuclide imaging studies can serve as an incidental method for verifying central venous catheter placement and function.
• This approach may reduce the need for separate imaging modalities solely for CVC confirmation.
• Enhances patient safety by early detection of catheter malposition during routine diagnostic procedures.