Related Experiment Videos
Superior vena cava stenosis associated with hemodialysis catheters
S Khanna1, K Sniderman, M Simons
1Division of Nephrology, Toronto Hospital, Canada.
Insights
Superior vena cava (SVC) stenosis hinders hemodialysis catheter function in patients. Balloon angioplasty and stenting successfully restored adequate blood flow and vascular access in most cases.
Area of Science:
- Nephrology
- Vascular Surgery
- Interventional Radiology
Background:
- Long-term hemodialysis necessitates reliable vascular access.
- Repeated use of central venous catheters can lead to venous stenosis.
- Superior vena cava (SVC) stenosis poses a significant challenge for hemodialysis access.
Observation:
- Four patients on long-term hemodialysis developed superior vena cava (SVC) stenosis.
- This stenosis interfered with the function and placement of jugular catheters used for hemodialysis access.
- All patients had a history of multiple previous subclavian and/or jugular catheter insertions.
Findings:
- SVC stenosis was diagnosed in patients experiencing inadequate catheter flows without thrombotic obstruction.
- Balloon angioplasty successfully treated SVC stenosis in three out of four patients.
- Vascular stenting was employed in one patient to prevent restenosis, with successful outcomes.
Implications:
- Suspecting SVC stenosis is crucial when hemodialysis catheter flows are suboptimal.
- Interventional procedures like balloon angioplasty and stenting can effectively reestablish satisfactory vascular access.
- These interventions can improve the management of hemodialysis patients with central venous stenosis.
Abstract:
The cases are described of four patients on long-term hemodialysis who developed stenosis of the superior vena cava (SVC) that interfered with the functioning or placement of jugular catheters for hemodialysis. All four patients had previously received multiple subclavian and/or jugular catheters inserted for hemodialysis access. In three patients, the SVC stenosis was successfully dilated by balloon angioplasty, and in one of these a stent was inserted to prevent restenosis. These three patients have subsequently been successfully dialyzed with jugular catheters. Stenosis of the SVC should be suspected when jugular catheters in the SVC give inadequate flows in the absence of thrombotic obstruction. Balloon dilatation with or without vascular stenting may allow satisfactory vascular access to be reestablished.