Yeungnam Univ J Med.  1994 Jun;11(1):49-54. 10.12701/yujm.1994.11.1.49.

The Role of Jugular Venous Oxyhemoglobin Saturation Monitoring During Cardic Surgery

• Kim SY
• Jee DL

• KMID: 2352263
• DOI: http://doi.org/10.12701/yujm.1994.11.1.49

Abstract

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 (SjOâ‚‚), 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, SjOâ‚‚ did not change, and it was stable during the hypothermic period of CPB. But a significan reduction in SjOâ‚‚ was observed during the rewarming period, and SjOâ‚‚ had an inverse linear correlation with esophageal temperature. Furthermore, the percent decrease of SjOâ‚‚ was related to rewarming speed. Therefore, therapeutic approaches for SjOâ‚‚ desaturation include slower rewarming, increasing cerebral blood flow, decreasing the cerebral metabolic rate for oxygen, increasing oxygen content, and increasing perfusion flow rate.

MeSH Terms

Arterial Pressure
Brain
Cardiopulmonary Bypass
Cerebrovascular Circulation
Humans
Oxygen
Oxyhemoglobins*
Perfusion
Rewarming
Thoracic Surgery
Oxygen
Oxyhemoglobins