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Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
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Changes in jugular bulb oxygen saturation during off-pump coronary artery bypass graft surgery

J Y Kim1, Y L Kwak, Y J Oh

  • 1Department of Anesthesiology and Pain Medicine, Gachon Medical School, Gil Medical Center, Seoul, Korea.

Acta Anaesthesiologica Scandinavica
|July 28, 2005
PubMed

Insights

Cerebral oxygenation remained stable during off-pump coronary artery bypass (OPCAB) surgery, even with significant hemodynamic changes. Jugular bulb oxygen saturation, an indicator of cerebral blood flow, stayed within normal limits throughout the procedure.

Area of Science:

  • Cardiovascular Surgery
  • Neuroanesthesia
  • Cerebral Hemodynamics

Background:

  • Hemodynamic changes during off-pump coronary artery bypass (OPCAB) surgery can impact cerebral blood flow.
  • Jugular bulb oxygen saturation is a reliable indicator of cerebral blood flow when cerebral metabolic rate is constant.

Purpose of the Study:

  • To evaluate changes in jugular bulb oxygen saturation during OPCAB surgery.
  • To assess the impact of hemodynamic derangement on cerebral oxygenation during OPCAB.

Main Methods:

  • 48 patients undergoing OPCAB surgery were studied.
  • Jugular bulb catheters were used to measure oxygen saturation and hemodynamic variables.
  • Measurements were taken at baseline, during anastomosis of three coronary arteries, and after sternal closure.

Main Results:

  • Cardiac index and mixed venous oxygen saturation significantly decreased during coronary artery anastomosis.
  • Jugular bulb oxygen saturation showed statistically significant changes but remained within normal limits.
  • Global cerebral oxygenation was maintained despite hemodynamic fluctuations.

Conclusions:

  • Jugular bulb oxygen saturation effectively represents global cerebral oxygenation during OPCAB.
  • Cerebral oxygenation is well-maintained during OPCAB surgery, even with significant hemodynamic alterations.
  • OPCAB surgery can be performed with stable cerebral perfusion.
Abstract

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