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Validity and Reliability of an Ultrasound Device for Detecting Carotid Emboli
Author(s) -
Stump David A.,
Stein Carl S.,
Tegeler Charles H.,
Hitchings Lloyd P.,
Hager Richard,
Eicke Martin,
Burke Gregory L.
Publication year - 1991
Publication title -
journal of neuroimaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.822
H-Index - 64
eISSN - 1552-6569
pISSN - 1051-2284
DOI - 10.1111/jon19911118
Subject(s) - medicine , cardiopulmonary bypass , reliability (semiconductor) , carotid arteries , cardiology , radiology , power (physics) , physics , quantum mechanics
Cardioembolic mechanisms cause 15 to 20% of all strokes and may account for the high incidence of neurological dysfunction associated with cardiopulmonary bypass. Accurate identification of high‐risk subjects and/or surgical techniques would allow more effective testing and implementation of preventive or therapeutic measures to help reduce morbidity and mortality. This article reports on validity and reliability testing of a new emboli detection device that allows continuous monitoring of the common carotid artery. The instrument appears to be capable of detecting accurately particles of 193 1–1 or less in diameter and is highly reliable both within and between observers. In preliminary clinical use, the instrument also detected embolic signals in all patients monitored during cardiopulmonary bypass, while none were detected in healthy control subjects. These results establish the validity and reliability of a new emboli detection device and suggest its potential application to emboli detection monitoring during cardiopulmonary bypass.