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ID 37677
本文ファイル
著者
Kochi, Kazuhiro
Orihashi, Kazumasa
キーワード
Doppler ultrasound
Stroke Prevention
Monitor in Cardiac Surgery
NDC
医学
抄録(英)
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 maximum flow velocity (Vmax) of the right central retinal artery was measured with a 7 .5 MHz Doppler system. The Vmax of the right middle cerebral artery was measured with a TCD system. Regional tissue oxygen saturation (rS02) was continuously measured with a NIRS system. The total number of individual data for each monitoring method collected from 25 patients was 184. The CRAD-Vmax was correlated more closely with the corresponding maximum blood pressure than the TCD-Vmax (r = 0.742 and 0.607, respectively). No missing data were seen in CRAD, but 20 missing data were seen in TCD, mostly during the period of cardiopulmonary bypass with lowered blood pressure. All 184 data were divided into two groups: Group 1 (rSO2 ≥ 60 %, n=175) and Group 2 (rS02 <60 %, n=9 data). 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.
掲載誌名
Hiroshima Journal of Medical Sciences
51巻
2号
開始ページ
49
終了ページ
54
出版年月日
2002-06
出版者
Hiroshima University Medical Press
ISSN
0018-2052
NCID
言語
英語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
部局名
医歯薬学総合研究科
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