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J Korean Soc Emerg Med > Volume 9(2); 1998 > Article
Journal of The Korean Society of Emergency Medicine 1998;9(2): 231-239.
The availability of central venous oxygen saturation in shock patients
Tae Sik Hwang, Sang Weon Chung, Hahn Shick Lee, Hyun Seung Kim, Hoon Sang Chi
In evaluating the early state of shock patients and their response to treatment, generally vital signs or additional hemodynamic values were used. Vital signs are easily obtained and repetitious values or continous monitoring is possible, whereas it cannot evaluate the patient's status properly nor is it a good prognostic factor. Meanwhile, additional hemodynamic values are obtained from pulmonary artery catheterization. But this procedure is difficult to proceed in the emergency room. Since central venous oxygen saturation has the advantage of being easily obtained and acts as a good prognostic factor for shock patients, we intended to prove its efficacy. From 1997 May to October, 50 patients admitted to Yonsei University Young Dong Severance Hospital in shock state, with systolic blood pressure below 90mmHg, were evaluated. Central venous catheter was inserted to obtain central venous oxygen saturation, serum lactate, base excess value, and its' initial value compared with the prognosis. The central venous oxygen saturation and base excess were low, while serum lactate value was high in the nonsurvival group. And in ROC(relative operating characteristic) curve, the AUC(area under curve) of central venous oxygen saturation was larger than the others. In comparing the MOF(multi-organ failure) group with the non-MOF group, the MOF group had a lower central venous oxygen saturation and base excess, and a higher serum lactate level, whereas in ROC curve, the AUC of base excess was larger than the others. Therefore, in estimating the prognosis of shock patients, the early central venous oxygen saturation proved to be a good prognostic factor.
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