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- Lundgren, Fredrik, et al.
(författare)
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PTFE bypass to below-knee arteries : distal vein collar or not? A prospective randomised multicentre study
- 2010
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Ingår i: European Journal of Vascular and Endovascular Surgery. - : Elsevier BV. - 1078-5884 .- 1532-2165. ; 39:6, s. 747-754
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundPatency and limb salvage after synthetic bypass to the arteries below-knee are inferior to that which can be achieved with autologous vein. Use of a vein collar at the distal anastomosis has been suggested to improve patency and limb salvage, a problem that is analysed in this randomised clinical study.MethodsPatients with critical limb ischaemia undergoing polytetrafluoroethylene (PTFE) bypass to below-knee arteries were randomly either assigned a vein collar or not in two groups – bypass to the popliteal artery below-knee (femoro-popliteal below-knee (FemPopBK)) and more distal bypass (femoro-distal bypass (FemDist)). Follow-up was scheduled until amputation, death or at most 5 years, whichever event occurred first.ResultsIn the FemPopBK and in the FemDist groups, 115/202 and 72/150 were randomised to have a vein collar, respectively. Information was available for 345 of 352 randomised patients (98%).At 3 years, primary patency was 26% (95% confidence interval (CI) 18–38) with a vein collar and 43 (33–58) without a vein collar for femoro-popliteal bypass and 20 (11–38), and 17 (9–33) for femoro-distal bypass, respectively. The corresponding figures for limb salvage were 64 (54–75) and 61 (50–74) for femoro-popliteal bypass, and 59 (46–76) and 44 (32–61) for femoro-distal bypass with and without a vein collar, respectively. Log-rank-test for the whole Kaplan–Meier life table curve showed no statistically significant differences with or without vein collar primary patency: p = 0.0853, p = 0.228; secondary patency: p = 0.317, p = 0.280; limb salvage: p = 0.757, p = 0.187 for FemPopBK and FemDist, respectively. The use of a vein collar did not influence patency or limb salvage.ConclusionThis study failed to show any benefit for vein collar with PTFE bypass to a below-knee artery.
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| 4. |
- Bergqvist, David, et al.
(författare)
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Secondary aortoenteric fistula : changes from 1973 to 1993
- 1996
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Ingår i: European Journal of Vascular and Endovascular Surgery. - 1078-5884 .- 1532-2165. ; 11:4, s. 425-428
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Tidskriftsartikel (refereegranskat)abstract
- AIM: To investigate a series of patients with secondary aortoenteric fistulas and compare it with a previous series (1985-93 vs. 1973-84). DESIGN: Retrospective study of medical records. SETTING: Sixteen vascular surgical centers in Sweden. PATIENTS: Twenty-seven patients were identified making an overall incidence of 0.5% of all aortoiliac operations. Among aneurysm patients the incidence was significantly lower than in the previous series. One patient record could not be identified. Fourteen primary operations were for aortic aneurysm, 12 for occlusive disease and one was an aortorenal vein bypass. RESULTS: Symptoms of the fistula occurred after a median interval of 90 months which is significantly later than the previous series (32 months; p<0.05). The commonest presentation was bleeding followed by septis. The median diagnostic delay was 10.5 days, which was significantly shorter than in the previous series. Most fistulas involved the duodenum (88%). One patient died before surgery. The postoperative mortality was 28%, significantly lower than in the previous series (58%) (p<0.05). At the end of follow up (median 43 months) significantly more patients were alive than in the previous series (42% vs 18%) (p<0.05). CONCLUSION: Over a 21 year period there seems to have been a decrease in the frequency of secondary aortoenteric fistulas after aneurysm surgery, a longer interval before they occur, a shorter diagnostic delay, and a better survival.
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- Plate, G., et al.
(författare)
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Thrombolysis for acute lower limb ischaemia - a prospective, randomised, multicentre study comparing two strategies
- 2006
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Ingår i: European Journal of Vascular and Endovascular Surgery. - : Elsevier BV. - 1078-5884 .- 1532-2165. ; 31, s. 651-660
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Tidskriftsartikel (refereegranskat)abstract
- Objectives To test if initial high-dose, pulse-spray thrombolysis improves the early and late outcome of lower limb ischaemia as compared with low-dose infusion alone. Design Prospective randomised multicentre study. Material and methods Patients with acute and sub-acute (<30 days) lower limb ischaemia were randomised following angiography. Group 1 (n=58) received pulse-spray infusion of recombinant plasminogen activator (rt-PA, 15 mg/h) for 2 h followed by low-dose infusion if needed. Group 2 (n=63) were only treated with low-dose infusion (0.5 mg/h) of rt-PA for 48 h. Underlying lesions were corrected if required. Results The study was stopped prematurely. Complications were equally frequent in both groups. More than 75% lysis was accomplished in 78 versus 67% of the patients (p=0.21). Primary endpoints (re-occlusion, incomplete lysis, life-threatening complication, amputation, or death) were reached in 24 versus 32% of the patients (p=0.35). Neither vascular patency nor clinical parameters differed during the first year, but re-interventions tended to be more frequent (p=0.040 at 1 month; p=0.090 at 1 year) and of a greater magnitude (p=0.028) in group 2. Conclusions There was no obvious advantage with initial high-dose thrombolysis, which may be a type-2 error. A reduction of major re-interventions was recorded. Objectives To test if initial high-dose, pulse-spray thrombolysis improves the early and late outcome of lower limb ischaemia as compared with low-dose infusion alone. Design Prospective randomised multicentre study. Material and methods Patients with acute and sub-acute (<30 days) lower limb ischaemia were randomised following angiography. Group 1 (n=58) received pulse-spray infusion of recombinant plasminogen activator (rt-PA, 15 mg/h) for 2 h followed by low-dose infusion if needed. Group 2 (n=63) were only treated with low-dose infusion (0.5 mg/h) of rt-PA for 48 h. Underlying lesions were corrected if required. Results The study was stopped prematurely. Complications were equally frequent in both groups. More than 75% lysis was accomplished in 78 versus 67% of the patients (p=0.21). Primary endpoints (re-occlusion, incomplete lysis, life-threatening complication, amputation, or death) were reached in 24 versus 32% of the patients (p=0.35). Neither vascular patency nor clinical parameters differed during the first year, but re-interventions tended to be more frequent (p=0.040 at 1 month; p=0.090 at 1 year) and of a greater magnitude (p=0.028) in group 2. Conclusions There was no obvious advantage with initial high-dose thrombolysis, which may be a type-2 error. A reduction of major re-interventions was recorded.
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| 6. |
- Plate, G., et al.
(författare)
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When is Thrombolysis for Acute Lower Limb Ischemia Worthwhile?
- 2009
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Ingår i: European Journal of Vascular and Endovascular Surgery. - : Elsevier BV. - 1532-2165 .- 1078-5884. ; 37:2, s. 206-212
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: To find variables associated with outcome following thrombolytic treatment for acute lower limb ischemia. Design: Re-analysis of a prospective multicentre study. Material and methods: One hundred and twenty-one patients with acute lower limb ischemia previously included in a randomised study comparing high- with low-dose thrombolysis were re-analysed ignoring the mode of lytic treatment. All possibly predictive variables were subjected to multivariate analyses to find associations with outcome. Results: Previous successful thrombolysis, ankle-brachial index over 0.33, absence of motor dysfunction, presence of cardiac arrhythmia, and lysis of a vascular graft were all associated with successful thrombolysis (p = 0.003). Previous thrombolysis, age less than 70 years, and ankle-brachial index over 0.33 were all perfect predictors of absence of life-threatening complications or death. Successful lysis, age < 70, and lysis of a native artery as opposed to a vascular graft were all associated with clinical success (preserved patency, limb, and life) after one year (p = 0.002). Conclusions: Previous thrombolysis, age under 70 years, and non-severe ischemia predict successful thrombolysis free from severe complications. Successful thrombolysis is strongly predictive of amputation-free survival with vascular patency for at least one year. Occluded grafts could often be reopened, but long-term outcome is better after thrombolysis of native arteries. (C) 2008 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.
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