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Angioplasty vs stent in the treatment of transplant renal artery stenosis.

OBJECTIVE: To compare outcomes between percutaneous transluminal angioplasty and stent placement in the treatment of transplant renal artery stenosis (TRAS).

METHODS: We retrospectively studied patients who underwent angiography for TRAS between 1/1/2008 and 9/20/2016 at 1 center. We compared the rates of restenosis in patients who were treated with angioplasty alone vs those who were treated with stenting. Secondary outcomes included serum creatinine and blood pressure after intervention and graft and patient survival.

RESULTS: A total of 82 patients were identified as having TRAS after angiography. Restenosis occurred in 28% (16 of 58) of the angioplasty patients compared with 8% (2 of 24) of the stented patients (P = .04). Repeat angiography occurred in 14% (8 of 58) of angioplasty patients vs 13% (3 of 24) of stented patients (P = .9). The stented group had significantly higher pre-intervention stenosis (71% vs 64%, P = .01) and lower postintervention stenosis (4% vs 30%, P < .001). Serum creatinine and blood pressures were not significantly different between the 2 groups at 30, 90, or 360 days postintervention. There was no statistically significant difference in graft or patient survival between groups (P = .37).

CONCLUSIONS: Stent placement resulted in fewer cases of restenosis compared with angioplasty alone, although no benefit in terms of serum creatinine, blood pressure, or patient and graft survival was shown.

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