Efficacy of short-term catheter-directed thrombolysis used with rt-PA combined with endovascular interventional therapy in patients with lower limb ischemia

Abstract

To evaluate the performance effect of short-term catheter-directed thrombolysis with different dosage of rt-PA allied with endovascular interventional therapy for patients with acute lower limb ischemia. To separate 84 consecutive patients suffered from acute lower limb ischemia into two groups at random, then adopt catheter-directed thrombolysis for each group of patients injected 20 mg (Group A) or 10 mg (Group B) rt-PA into the occlusive lesion correspondingly, and subsequently perform endovascular intervention on significant underlying lesions on the base of angiography results. Adopt statistical methods to assess treatment effectiveness, rates of complication and amputation rates within 30 days, 6 months or 12 months. The statistic analysis was performed under SPSS 16.0 format, and adopts t test and χ(2) test. There was no statistical difference on patient characteristics and lesions between both groups (P > 0.05). Procedural success rates as well clinical success rates were all 100%. Not incur any diversity on thrombolysis effectiveness between both groups injected different dosage of rt-PA (P > 0.05). Not found major differences on ratios of PTA or implant stent between both groups (P > 0.05). During the follow-up period of 30-day, 6-, 12- months, there were no statistical differences on the amputation-free survival rates and complication rates between both groups. Whereas short-term catheter-directed thrombolysis combined with endovascular interventional therapy won good operation effectiveness on patients with acute lower limb ischemia, moreover the dosage of rt-PA did not impact on thrombolysis, it is worthy to be applied in the clinical practice.