Risk factors of restenosis of percutaneous transluminal angioplasty of Takayasu arteritis

Objective To analyze the relevant risk factors for restenosis after percutaneous transluminal angioplasty of patients with Takayasu′s arteritis. Methods Clinical data of 43 patients undergoing percutaneous angioplasty due to Takayasu arteritis were retrospectively analyzed. Univariate and multivariate Logistic regression analysis was used to explore the relevant risk factors for restenosis after percutaneous transluminal angioplasty. Results There were 9 males and 34 females. The mean age was 23 (18-33) years old, 59 times of PTA were performed, including 44 in renal artery, 9 in aorta, 2 in iliac and 2 in carotid artery, 1 in brachiocephalic trunk and 1 in left subclavian artery. The mean follow up time was (64±42) months. The rate of restenosis was 47.5%(28/59)and the mean time of restenosis was (23±27) months. The restenosis rate of aorta and iliac artery was 9.1%, that of renal artery was 52.3% and that of supra aortic artery was 100% . The rate of restenosis was higher in patients with symptoms of headache, syncope and low back pain, the elevated ESR and CRP increased the risk of restenosis (all P<0.05). Multivariate Logistic analysis showed that preoperative elevation of ESR and CRP were risk factors for restenosis after percutaneous angioplasty for Takayasu arteritis. Conclusions PTA was safe and effective in Takayasu arteritis involving aorta-iliac and renal artery, the elevated ESR and CRP was related to high risk of restenosis. Key words: Takayasu arteritis; Angioplasty; Endovascular therapy