Japanese
Title冠血行再建術におけるTranstracheal Doppler法による心拍出量の測定の有用性
Subtitle原著
Authors高橋薫*, 野村実*, 近藤泉*, 曽根依子*, 白井希明*, 藤田昌雄*
Authors(kana)
Organization*東京女子医科大学麻酔学教室
Journal循環制御
Volume12
Number1
Page93-97
Year/Month1991/
Article原著
Publisher日本循環制御医学会
Abstract「要約」Transtracheal Doppler(TTD)法は, 気管内チューブの先端の超音波トランスデューサより発生するドプラにより, 非侵襲的に, かつ連続的に心拍出量を測定することができる. 今回, 10例の冠血行再建術症例に使用し, 熱希釈法とTTD法による心拍出量の測定を, 挿管後, 執刀後, 胸骨切開後, 内胸動脈剥離15分後, 30分後, 45分後, 人工心肺離脱後に行い, 両者の相関を比較検討した. その結果, 相関係数は挿管後0.953, 執刀後0.891, 胸骨切開後0.984, 内胸動脈剥離15分後0.606, 30分後0.731, 45分後0.916, 人工心肺離脱後0.880であった. 本法は, 熱希釈法との併用により, 心拍出量の連続的な変化を知ることができ, 心臓外科手術において有用であると考えられた.
Practice基礎医学・関連科学
KeywordsTranstracheal Doppler, Cardiac output, Coronary artery bypass graft
English
TitleClinical evaluation of cardiac output measured by transtracheal Doppler during coronary artery bypass surgery.
Subtitle
AuthorsKaoru Takahashi, Minoru Nomura, Izumi Kondo, Yoriko Sone, Kimei Shirai, Masao Fujita
Authors(kana)
OrganizationDepartment of Anesthesiology Tokyo Womens' Medical College
JournalCirculation Control
Volume12
Number1
Page93-97
Year/Month1991/
ArticleOriginal article
PublisherJapan Society of Circulation Control
AbstractThe importance of measurement of cardiac output during cardiac operation is well recognized, and several methods for its determination exist. Transtracheal Doppler is one of the nonivasive methods for measuring continuous cardiac output. An endotracheal tube with a 5 mm diameter ultrasonic transducer incorporated into its distal end was inserted into the trachea. The device provides ultrasound measurements of aortic diameter and blood velocity in the ascending aorta to obtain cardiac output. We compaired cardiac output obtained by transtracheal Doppler with that by thermodilution. In order to accurately measure cardiac output with transtracheal Doppler technique, it is required that a Doppler probe tube must be inserted deep enough into the trachea, just above the carina. The correlation coefficients of cardiac output obtained by transtracheal Doppler and thermodilution were 0.953 after intubation, 0.891 after skin incision, and 0.984 after sternal split, respectively. However, the correlation coefficients were 0.606, 0.731 and 0.916, 15 min, 30 min and 45 min after retraction of the sternum. One of the merits of this procedure is to be able to obtain continuous cardiac output in intubated patients without an additional risk. We conclude that this method is useful for hemodynamic monitoring in intubated patients during coronary artery bypass graft operation.
PracticeBasic medicine
KeywordsTranstracheal Doppler, Cardiac output, Coronary artery bypass graft

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