Hiroshima journal of medical sciences
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Hiroshima J. Med. Sci. · Jun 2002
Comparative StudyComparative study of noninvasive cerebrovascular monitoring methods in cardiac surgery.
Unfavorable incidents during cardiac operations due to inadequate cerebral perfusion can be avoided by the utilization of noninvasive blood flow monitoring methods. The purpose of this study was to evaluate monitoring systems for cebrovascular perfusion. We compared currently available blood flow monitoring devices including transcranial Doppler (TCD), central retinal artery color Doppler (CRAD) and near-infrared spectroscopy (NIRS). ⋯ The CRAD-Vmax was significantly lower in Group 2 (5.2+/-2.4 cm/s versus 3.0+/-0.4 cm/s, p<0.001). However, there was no significant difference in the TCD-Vmax between these two groups. Thus, CRAD may be superior to TCD in detecting insufficiency of cerebral blood flow correlating to rSO2, and could be used as the first choice monitoring system of cerebral blood flow during cardiac surgery.