Mijangos WF, Sánchez NNE, Serrano LJA, Flores EMH, González RMÁ, Carrasco GH, Soriano AG, Moreno RJC

Language: Spanish
References: 12
Page: 51-55
PDF size: 393.77 Kb.

ABSTRACT

Objective: To conduct a methodological study to investigate the intra-and interobserver variability in the interpretation of carotid stenosis by ultrasound through the criteria of the University of Washington, and to determine the degree of consistency of an expert.
Background: Carotid atherosclerotic disease is a well-established factor of ischemic stroke than for its proximity to the skin can be measured by Doppler ultrasound, diagnostic means high reliability.
Methods: We studied 56 carotid arteries. The initial diagnosis was made with high-resolution Doppler ultrasound by an expert and 4 observers. The degree of disease is staged based on the criteria of the University of Washington.Se identified with a code and randomized the order of review prior to each performance by the observers, determining degree of consistency in the expert observers.
Results: Of the 28 patients yielded an average kappa coefficient of 0.933-expert duplex, 3 cases with occlusion, 4 of 80-99% stenosis, 5 with stenosis of 50-79%, 21 to 30 -49% stenosis and 23 stenosis less than 30%. Of the 4 observers yielded an average kappa of 0.862, ranging from 0850 to 0880.
Conclusions: The good uniformity of criteria observed in this study we consider it as the result of daily practice by vascular ultrasound. The carotid duplex is a reliable and valid test in the diagnosis of extracranial carotid stenosis.

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