Misplacement and loop formation of central venous catheters

Area of Science:

• Medical Devices
• Vascular Access
• Radiology

Background:

• Central venous catheters (CVCs) are vital for patient care but prone to malposition.
• Reported CVC malplacement rates vary widely, impacting long-term efficacy and safety.
• Specific venous access sites are associated with higher risks of aberrant catheter placement.

Purpose of the Study:

• To analyze the incidence of malposition and loop formation in radiographically controlled CVC placements.
• To compare malplacement rates across different venous access techniques.
• To identify factors contributing to successful CVC positioning.

Main Methods:

• Radiographic analysis of 378 central venous catheter placements.
• Categorization of malpositions by venous access site and technique.
• Calculation of malplacement and loop formation frequencies.

Main Results:

• Overall malposition and coiling occurred in 5.3% of cases.
• External jugular vein access showed a high malplacement rate (30%).
• The supraclavicular subclavian approach demonstrated a low malplacement rate (1.4%).
• Pure loop formation was observed in 2.9% of cases.

Conclusions:

• The supraclavicular subclavian approach may reduce CVC malposition rates.
• Avoiding certain techniques (e.g., cubital, femoral) and pre-determining catheter length can improve accuracy.
• Minimizing malposition is essential for safe and effective long-term CVC use.