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Treatment of renal transplant artery stenosis by percutaneous transluminal dilatation
Insights
Balloon angioplasty successfully treated renal artery stenosis in most transplant patients, lowering blood pressure and maintaining kidney function. This minimally invasive procedure offers a promising alternative to surgery for suitable candidates.
Area of Science:
- Nephrology
- Cardiovascular Surgery
- Interventional Radiology
Background:
- Renal artery stenosis is a significant complication following kidney transplantation.
- Transplant artery stenosis can lead to graft dysfunction and hypertension.
Purpose of the Study:
- To evaluate the efficacy and safety of percutaneous transluminal angioplasty (PTA) for treating renal allograft artery stenosis.
Main Methods:
- Transluminal arterial dilatation using balloon catheters was performed in four patients with renal allografts and transplant artery stenosis.
- The procedure involved accessing and dilating stenotic segments of the transplant artery.
Main Results:
- Three out of four patients experienced uncomplicated procedures with significant reductions in mean blood pressure (from 180/100 mm Hg to 135/85 mm Hg).
- Renal function remained stable in these three patients post-angioplasty.
- One patient developed reversible acute renal failure due to inaccessible stenotic sites.
Conclusions:
- Percutaneous transluminal angioplasty is a potentially successful alternative to surgical intervention for renal transplant artery stenosis in select patients.
- Careful patient selection is crucial due to potential procedural complications.
Abstract:
Transluminal arterial dilatation using a balloon catheter was performed in four patients with renal allografts and transplant artery stenosis. In three patients the procedure was uncomplicated and resulted in reduction in mean blood pressure from 180/100 mm Hg to 135/85 mm Hg immediately after and 135/90 mm Hg at a mean of eight months after angioplasty; renal function remained stable. In one patient with two stenoses the procedure was abandoned because of inaccessibility of the stenotic sites to the dilatation catheter; however, reversible acute renal failure ensued. Percutaneous transluminal angioplasty may thus offer a successful alternative to conventional surgical techniques in renal transplant artery stenosis in suitable patients.