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[Catheter-induced thromboses--duplex ultrasound studies of incidence and extent]
Insights
Central venous catheter thrombosis occurred frequently, particularly with subclavian catheters. Doppler-duplex ultrasound revealed poor visualization in some cases, impacting overall catheter patency rates.
Area of Science:
- Vascular Surgery
- Radiology
- Critical Care Medicine
Background:
- Central venous catheters (CVCs) are essential for patient care but associated with risks.
- Thrombosis is a significant complication of CVCs, potentially leading to reduced catheter function and patient morbidity.
- Accurate detection of CVC-related thrombosis is crucial for timely intervention.
Purpose of the Study:
- To determine the frequency and extent of thrombosis associated with CVCs.
- To evaluate the effectiveness of Doppler-duplex ultrasound in detecting CVCs and thrombosis.
- To assess factors influencing CVC patency and thrombosis rates.
Main Methods:
- Doppler-duplex ultrasound was used to examine 36 patients with CVCs.
- Catheter visualization rates were assessed in jugular, femoral, and subclavian veins.
- Catheter patency and thrombosis rates were recorded over time.
Main Results:
- Excellent visualization rates were achieved for jugular (91%) and femoral (62%) vein catheters.
- Subclavian vein catheter visualization was significantly lower (33%).
- The overall CVC patency rate was 37% between 8 hours and 60 days post-insertion, with a mean patency duration of 12.2 days. No significant relationship was found between catheter type, management, and thrombosis rates.
Conclusions:
- Doppler-duplex ultrasound is effective for visualizing CVCs in certain locations but has limitations in the subclavian vein.
- CVC-related thrombosis is a common issue, impacting catheter patency.
- Further research may be needed to optimize CVC placement and monitoring strategies to improve patency and reduce complications.
Abstract:
The aim of the study was to detect the frequency and the extension of thrombosis caused by central venous catheters by means of Doppler-duplex ultrasound. 36 patients were examined. The visualization rate of catheters in jugular (91%) and femoral (62%) veins was excellent. In contrast, catheters in the subclavian vein could be detected only in 33 per cent of all cases. As a result the overall patency rate of catheters was only 37 per cent after a period between 8 hours and 60 days (12.2 +/- 11.3 days) following the introduction. There was no significant relation between the type of catheter, the management with central venous catheters and the rate of thrombosis.