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[Indications for carotid endarterectomy without arteriography. A validation study using eco-Doppler]
V Fernández1, S Bellmunt, J M Escribano
1Servicio de Angiología, Cirugía Vascular y Endovascular, Hospital General Universitario Vall d'Hebron, Barcelona, España.
Revista De Neurologia
|October 12, 2000
Summary
Eco-Doppler is a reliable method for diagnosing carotid stenosis, enabling surgical decisions without arteriography. This vascular diagnostic tool shows high accuracy for specific patient groups.
Area of Science:
- Vascular Surgery
- Diagnostic Imaging
- Neurology
Background:
- Advancements in diagnostic methods allow for carotid stenosis diagnosis and surgical planning without traditional arteriography.
- Eco-Doppler ultrasound is a valuable tool, but requires site-specific validation for accurate results.
Purpose of the Study:
- To validate the diagnostic accuracy of eco-Doppler for carotid bifurcation stenosis.
- To compare eco-Doppler findings with angiography for therapeutic indication accuracy.
Main Methods:
- A prospective study of 62 patients with >70% carotid stenosis diagnosed by eco-Doppler.
- Comparison of eco-Doppler results with subsequent carotid arteriography.
- Determination of correlation for stenosis degree and therapeutic decisions.
Main Results:
- Eco-Doppler demonstrated 100% sensitivity and specificity for stenosis >70% with contralateral stenosis <50%.
- High correlation (kappa index = 1) was observed between eco-Doppler and angiography in specific cases.
- Discrepancies in therapeutic indications occurred in 5 cases, mainly related to occlusion or bilateral lesions.
Conclusions:
- Carotid endarterectomy can be reliably indicated based on eco-Doppler findings for unilateral stenosis >70% and contralateral stenosis <50%.
- The Vascular Diagnostic Laboratory's eco-Doppler protocol is validated for this patient subgroup.