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Asymptomatic carotid endarterectomy. Patient and surgeon selection
M J Marcinczyk1, G G Nicholas, J F Reed
1Department of Surgery, Lehigh Valley Hospital, Allentown, PA 18105-1556, USA.
Stroke
|February 1, 1997
Summary
Patient selection significantly impacts carotid endarterectomy outcomes. Strict adherence to Asymptomatic Carotid Atherosclerosis Study (ACAS) guidelines makes its conclusions applicable to the general population with asymptomatic carotid stenosis.
Area of Science:
- Vascular Surgery
- Clinical Outcomes Research
Background:
- The applicability of established carotid endarterectomy protocols to the general patient population is debated.
- Outcomes of asymptomatic patients undergoing carotid endarterectomy at our institution were compared to Asymptomatic Carotid Atherosclerosis Study (ACAS) data.
Purpose of the Study:
- To compare outcomes of asymptomatic patients undergoing carotid endarterectomy with ACAS patients treated concurrently.
- To evaluate the impact of patient selection on surgical outcomes.
Main Methods:
- A retrospective review of 277 asymptomatic patients undergoing carotid endarterectomy between 1987 and 1993 (ACAS enrollment period).
- Patients were categorized into five subgroups based on ACAS eligibility and surgeon type (ACAS vs. non-ACAS).
- Primary endpoints included mortality, myocardial infarction, and stroke.
Main Results:
- ACAS-eligible patients were younger, had more severe carotid stenosis, and fewer comorbidities (pulmonary, renal) than ineligible patients.
- Patient selection (ACAS eligibility) significantly improved outcomes for mortality and myocardial infarction, and reduced length of stay.
- ACAS surgeons operated on more severely stenotic lesions but showed no difference in outcomes compared to non-ACAS surgeons.
Conclusions:
- Patient selection is a critical determinant of carotid endarterectomy outcomes.
- Strict adherence to ACAS enrollment guidelines ensures the applicability of its findings to patients with asymptomatic carotid stenosis at our institution.
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