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Carotid Artery Stenosis: Sensitivity and Specificity

Introduction: Plaque in the carotid artery can cause stenosis leading to hemodynamic compromise. This is clinically relevant mostly as it applies to an increased risk of Stroke, which can be reduced by a carotid endarterectomy in certain indications (i.e. with a threshold degree of stenosis).

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Tags: Vascular Tag this Diagnosis.

The sensitivity and specificity of findings for Carotid Artery Stenosis are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %. Post-Test Probability (Predictive Value): %. Switch to display mode.
**Note that calculating probabilities from more than one finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)
Specific Findings
FindingResult SensitivitySpecificity
[ + ] Carotid Bruit + 0 - 23.5%95.8%
Poorly Diagnostic Findings
FindingResult SensitivitySpecificity
[ + ] Carotid Bruit + 0 - 71%81%
[ + ] Doppler Ultrasound + 0 - 68%67%
[ + ] Carotid Bruit + 0 - 63%61%