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Published on: November 24, 2014
[Occlusion of peripheral bypass--changing of an institutional paradigm]
Insights
Catheter-directed thrombolysis (CDT) demonstrates superior outcomes for acute limb ischemia from prosthetic bypass occlusion compared to surgical thrombectomy (ST), offering longer freedom from reintervention and limb salvage.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Endovascular Therapy
Background:
- Acute lower limb ischemia is a critical condition often caused by prosthetic bypass occlusion.
- Treatment options include surgical thrombectomy (ST) and catheter-directed thrombolysis (CDT).
- Comparing the efficacy of ST and CDT is crucial for optimizing patient outcomes.
Purpose of the Study:
- To compare the effectiveness of surgical thrombectomy (ST) versus catheter-directed thrombolysis (CDT) in treating acute lower limb ischemia secondary to prosthetic bypass occlusion.
Main Methods:
- Retrospective analysis of clinical data from patients treated with ST or CDT for prosthetic bypass occlusion.
- Statistical comparison using Chi-squared and independent samples t-tests.
- Kaplan-Meier analysis with Log Rank testing for freedom from reintervention and limb salvage rates.
Main Results:
- The study included 26 bypasses in the ST group and 11 in the CDT group.
- No significant demographic or bypass type differences between groups.
- CDT showed a median freedom from reintervention of 275 days versus 3 days for ST (p=0.0029).
- CDT demonstrated a median limb salvage of 468 days versus 17 days for ST (p=0.03).
Conclusions:
- Catheter-directed thrombolysis (CDT) is a favorable first-line therapy for acute ischemia due to prosthetic bypass occlusion.
- The findings suggest CDT offers better long-term outcomes than ST in this patient cohort.
- Further investigation into the outcomes of surgical thrombectomy is warranted.
Objectives:
Compare the results of surgical thrombectomy (ST) and catheter directed thrombolysis (CDT) in the treatment of acute ischemia due to peripheral prosthetic bypass occlusion.
Methods:
Retrospective single center analysis of the electronic clinical data on two groups of patients with acute lower limb ischemia due to prosthetic bypass occlusion: in one ST was performed (data collected between June-2006 ahd September-2011) and the other was treated with CDT Qui2 test (categorical variables) and independent samples t test (continuous variables) were used for comparisons between groups. The Kaplan-Meier method was used to estimate rates of freedom from reintervention and limb salvage, with the Log Rank test used for comparisons.
Results:
Twenty-six bypass were included in the ST group and 11 bypass were included in the CDT group. There were no statistically significan differences between groups regarding gender age and type of occluded bypass. The median time for freedom from reintervention was 275 days for the CDT group and three days for the ST group (p = 0.0029 when comparing survival curves). The median time for limb salvage was 468 days for the CDT group and 17 days for the ST group (p = 0.03 when comparing survival curves).
Conclusion:
These results support the choice for CDT as the local first line therapy for acute ischemia due to bypass occlusion, despite the limitations arising from the sample size. The results of ST need to be urgently addressed.
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