Why the study?
Does locally implemented duplex ultrasonography accurately identify carotid stenosis ≥ 70% compared to conventional angiography and strict NASCET criteria?
Population
171 carotid vessels evaluated for stenosis
Comparison
Locally implemented duplex ultrasonography and… vs Strict angiographic measurements using North…
Design
Cross-sectional
Authors
Discussion
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Member takes
Implication
Supports duplex US for local carotid stenosis grading; hypothesis-generating and should not yet change practice.
Structured PICO
Does locally implemented duplex ultrasonography accurately identify carotid stenosis ≥ 70% compared to conventional angiography and strict NASCET criteria?
P
Population
171 carotid vessels evaluated for stenosis
I
Intervention
Locally implemented duplex ultrasonography and local radiologists' reports from conventional cerebral angiography
C
Comparator
Strict angiographic measurements using North American Symptomatic Carotid Endarterectomy Trial (NASCET) criteria
O
Outcome
Agreement in degree of stenosis (≥ 70% vs < 70%) between duplex ultrasonography, local angiography reports, and NASCET criteriasurrogate
Duplex ultrasonography is highly sensitive for detecting significant carotid stenosis and may be more accurate than local angiography reports when compared to strict NASCET criteria.
Cite This Study
Chang et al. (1995) studied this question.