| Japanese |
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| Title | 呼気CO2産生量の連続測定による呼吸異常, 循環異常の解析 |
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| Subtitle | 原著 |
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| Authors | 小野紫*1, 大川一美*1, 唐澤正弥*1, 赤地吏*2, 岡田和夫*1 |
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| Organization | *1帝京大学医学部麻酔科学教室, *2帝京大学医学部附属病院ME部 |
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| Journal | 循環制御 |
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| Volume | 19 |
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| Number | 2 |
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| Page | 255-260 |
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| Year/Month | 1998/ |
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| Article | 原著 |
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| Publisher | 日本循環制御医学会 |
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| Abstract | 「要旨」呼気CO2濃度と呼吸流速を刻々と測定するVentrak 1000を使用して, 帝京大学中央手術部での手術患者で呼気CO2産生量を連続的に測定した. 一回換気量, 肺コンプライアンス, 気道抵抗などの換気力学の他にSingle Breath Carbon Dioxide(SBCO)として死腔量, 死腔率, A-a DCO2, 呼気CO2排泄量が測定できる. 肺循環の増減, 心拍出量の増減により末梢から肺に運ばれるCO2量, さらには肺から排出されるCO2量が変わってくることをみた. 出血性ショックではVCO2の減少, 褐色細胞腫ではVCO2の上昇が心拍出量増加, 血圧上昇と共にみられた. 換気量が異常に低下した状態が, 麻酔科医がバイタルサインの変動からでは判断できなかったときにVentrakによりVCO2低下, 呼気CO2上昇が認められ, 一回換気量の低下の結果をよく示した. 周盛期のモニターとして呼吸, 循環の両面で有用であると考察した. |
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| Practice | 基礎医学・関連科学 |
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| Keywords | CO2 production, Expired CO2 curve, Expired flow rate, Hemorrhage, Pheochromocytoma |
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| English |
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| Title | Analysis of Ventilation or Pulmonary Perfusion Abnormality with Continuous Expired CO2 Production |
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| Subtitle | |
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| Authors | Yukari Ono*1, Kazumi Okawa*1, Masaya Karasawa*1, Tsukasa Akachi*2, Kazuo Okada*1 |
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| Authors(kana) | |
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| Organization | *1Department of Anesthesiology, Teikyo University School of Medicine, *2Department of Medical Engineering, Teikyo University School of Medicine |
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| Journal | Circulation Control |
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| Volume | 19 |
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| Number | 2 |
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| Page | 255-260 |
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| Year/Month | 1998/ |
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| Article | Original article |
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| Publisher | Japan Society of Circulation Control |
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| Abstract | CO2 production from the lung was calculated with Fletcher's method. Ventrak is designed to measure and calculate breath by breath expired CO2 production with this method. Our initial experience with this Ventrak indicates that this device can reliably provide on-line CO2 production. On respiratory failure CO2 production was decreased and end-tidal CO2 was increased simultaneouly, while tidal volume and minute volume were significantly decreased. These changes were clearly monitored with Ventrak, while anesthesiologists could not remark the decrease of alveolar ventilation. Changes of cardiac output contributed to the increase or decrease of expired CO2 production, which was clearly shown both in hemorrhagic shock and pheochromocytoma. This Ventrak may provide a noninvasive on-line information of ventilation and pulmonary circulation. |
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| Practice | Basic medicine |
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| Keywords | CO2 production, Expired CO2 curve, Expired flow rate, Hemorrhage, Pheochromocytoma |
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