Key result
Carotid bruits demonstrated a sensitivity of 71%, specificity of 81%, and positive likelihood ratio of 3.65 for detecting 50-99% carotid stenoses, making them useful for directed screening.
Why the study?
Does the presence of carotid bruits predict significant carotid stenoses detected by ultrasonography in patients undergoing carotid US?
Observational (n=356)
No
Does the presence of carotid bruits predict significant carotid stenoses detected by ultrasonography in patients undergoing carotid US?
Effect estimate: PLR 3.65
Carotid bruits are not sufficiently accurate to definitively confirm or exclude significant carotid stenoses, but they serve as an appropriate sign for directed screening with carotid ultrasonography.
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Supports selective ultrasonography after bruit detection; leaves open whether this strategy improves stroke outcomes.
Johansson et al. (2008) conducted an observational in Carotid stenosis (n=356). Carotid bruits vs. Absence of carotid bruits was evaluated on Diagnostic accuracy for 50-99% carotid stenoses (PLR 3.65). Carotid bruits demonstrated a sensitivity of 71%, specificity of 81%, and positive likelihood ratio of 3.65 for detecting 50-99% carotid stenoses, making them useful for directed screening.
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