PMID: 12756845May 22, 2003Paper

Would ultrasonography contribute to the early detection of clinically silent dialysis access stenoses?

Casopís lékar̆ů c̆eských
J Malík, M Slavíková

Abstract

Stenoses are leading factors limiting dialysis vascular access patency. Both physical and haemodynamic examinations are used in stenoses screening. To estimate potential advantage of ultrasonography as a screening measure, we calculated both sensitivity and specificity of clinical (nephrological) diagnoses of access stenoses compared with ultrasound. 268 examinations of 193 subjects were included into this comparison. Linear-array 7.5 MHz ultrasound probe were used for whole-length access examination. Sensitivity of clinical examination was 35.8%, specificity 92.8%. Sensitivity did not differ significantly according to the stenosis localization. Ultrasound use in dialysis access screening would considerably increase the number of stenoses diagnosed in-time. On the contrary, clinical suspicion on access stenosis is highly specific, therefore it is not indispensable to confirm it by ultrasound.

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