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Long-term prognosis after carotid endarterectomy
Insights
Carotid endarterectomy for transient ischemic attacks (TIA) showed a 5-year survival rate of 85.2%. While operative risks were low, stroke and TIA recurrence rates warrant further investigation into long-term prognosis.
Area of Science:
- Vascular Surgery
- Neurology
- Clinical Outcomes
Background:
- Carotid transient ischemic attacks (TIA) pose a significant risk of stroke.
- Carotid endarterectomy is a surgical intervention to remove plaque from carotid arteries.
- The long-term outcomes and prognosis following carotid endarterectomy for TIA require ongoing evaluation.
Purpose of the Study:
- To evaluate the outcomes of carotid endarterectomy in patients with symptomatic carotid lesions.
- To assess the operative risks, survival rates, and long-term neurological events after the procedure.
- To contribute to understanding the prognosis of TIA patients treated surgically.
Main Methods:
- Analysis of 76 consecutive patients undergoing carotid endarterectomy for TIA between 1975-1981.
- Inclusion criteria: symptomatic carotid lesions.
- Follow-up duration ranged from 1 to 7 years (average 2.6 years).
Main Results:
- Operative mortality was 1.3%, with a 4% rate of severe morbidity.
- The observed 5-year survival rate was 85.2% (expected 92.4%).
- Cumulative stroke rate was 4.6% at 1 year and 7.9% at 3 years; 18 patients experienced recurrent TIAs.
Conclusions:
- Carotid endarterectomy for TIA is associated with manageable operative risks.
- Long-term survival is slightly lower than the general population, with notable rates of stroke and recurrent TIAs.
- The natural history of TIA remains incompletely defined, complicating definitive prognosis evaluation post-endarterectomy.
Abstract:
This study analyzed 76 consecutive patients with carotid transient ischemic attacks (TIA) and carotid lesions appropriate to symptoms who underwent endarterectomy during the period 1975-1981. The mean age of the patients was 51.9 +/- 8 years at the time of surgery. Hypertension was present in 32.9%, diabetes mellitus in 13%, ischemic cardiopathy in 8.2% and peripheral vascular disease in 6.6%. Operative mortality was 1.3% and harder morbidity 4%. The average follow-up was 2.6 years (range 1-7 years). The observed 5-year survival rate was 85.2% compared to the expected rate of 92.4% in a normal population. During the follow-up 5 patients had a stroke: the cumulative stroke rate was 4.6% at 1 year and 7.9% at 3 years. 18 patients had further TIAs (13 carotid TIAs and 5 vertebro-basilar TIAs). 6 patients suffered myocardial infarction. The prognosis of TIA patients treated with endarterectomy is difficult to evaluate because the natural history of TIAs is still undefined.