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Gastric intramucosal pH and hepatic venous oximetry after cardiopulmonary bypass in valve replacement patients

Takahashi, T. (Correspondence to: Dr T. Takahashi. ) ; Kunimoto, F. (Second Department of Surgery Gunma University School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma 371, Japan ) ; Ichikawa, H. (Second Department of Surgery Gunma University School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma 371, Japan ) ; Ishikawa, S. (Second Department of Surgery Gunma University School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma 371, Japan ) ; Sato, Y. (Second Department of Surgery Gunma University School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma 371, Japan ) ; Hasegawa, Y. (Second Department of Surgery Gunma University School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma 371, Japan ) ; Morishita, Y. (Second Department of Surgery Gunma University School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma 371, Japan ) ;
  • 초록  

    Abstract To determine splanchnic perfusion after cardiopulmonary bypass, gastric intramucosal pH (pH i ) and hepatic venous oxygen saturation (S HV O 2 ) were measured in 14 patients with cardiac valve replacement. Blood samples were analysed at 6, 12 and 24 h after admission to an intensive care unit. Gastric pH i increased significantly ( P <0.01) from 7.21 at 6h to 7.31 at 12 h and increased to 7.37 at 24 h while S HV O 2 increased significantly ( P <0.05) from 48% at 6 h to 57% at 12 h and 24 h. Cardiac index was >41/min per m 2 and mixed venous oxygen saturation >70%. Despite sufficient cardiac output, splanchnic perfusion decreased after cardiopulmonary bypass and recovered within 24 h after admission to the intensive care unit. It is concluded that gastric pH i and S HV O 2 are useful parameters for monitoring postoperative splanchnic perfusion in patients with open-heart surgery.


  • 주제어

    Intramucosal pH .   hepatic vein .   cardiopulmonary bypass .   valve replacement.  

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