Low-dose streptokinase for occluded Hickman catheters

Area of Science:

• Vascular Access Devices
• Interventional Radiology
• Thrombolytic Therapy

Background:

• Occlusion is a common complication of central venous catheters, impacting patient treatment.
• Fibrin sheath formation is a primary cause of catheter occlusion.
• Effective management of catheter occlusion is crucial for maintaining uninterrupted therapy.

Purpose of the Study:

• To evaluate the causes of Hickman catheter occlusion.
• To assess the efficacy of low-dose streptokinase in restoring patency of occluded Hickman catheters.

Main Methods:

• Contrast venography was used to evaluate 16 episodes of occluded Hickman catheters in 14 patients.
• The causes of occlusion, including fibrin sheath and mechanical issues, were identified.
• Low-dose streptokinase was administered to restore lumen patency in catheters occluded by fibrin sheaths.

Main Results:

• Fibrin sheath occlusion was identified in 13 out of 16 episodes (81%).
• Mechanical problems accounted for occlusion in 3 catheters.
• Low-dose streptokinase successfully restored patency in 12 of the 13 fibrin sheath occluded catheters (92%).

Conclusions:

• Fibrin sheath formation is the predominant cause of Hickman catheter occlusion.
• Low-dose streptokinase is a highly effective treatment for fibrin sheath-related catheter occlusion.
• Prompt intervention with low-dose streptokinase can preserve the functionality of central venous catheters.