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Yeungnam Univ J Med > Volume 11(1); 1994 > Article
Yeungnam University Journal of Medicine 1994;11(1):49-54.
DOI:    Published online June 30, 1994.
The Role of Jugular Venous Oxyhemoglobin Saturation Monitoring During Cardic Surgery.
Sae Yeon Kim, Dae Lim Jee
Postoperative brain damage is one of most serious complications of cardiopulmonary bypass (CPB). To prevent brain damage during CPB, adequate cerebral perfusion for cerebral oxygen demand should be maintained. This study monitored jugular venous oxyhemoglobin saturation (SjO₂), which reflects the overall balance of cerebral oxygen supply and demand, intermittently in 10 patients undergoing cardiac surgery. At the initiation of CPB, in spite of a significant decrease in mean arterial pressure, SjO₂ did not change, and it was stable during the hypothermic period of CPB. But a significan reduction in SjO₂ was observed during the rewarming period, and SjO₂ had an inverse linear correlation with esophageal temperature. Furthermore, the percent decrease of SjO₂ was related to rewarming speed. Therefore, therapeutic approaches for SjO₂ desaturation include slower rewarming, increasing cerebral blood flow, decreasing the cerebral metabolic rate for oxygen, increasing oxygen content, and increasing perfusion flow rate.
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