| Comparison between Regional Cerebral Oxygen Saturation and Jugular Bulb Venous Oxygen Saturation in Patients Undergoing OPCAB Surgery. |
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Eun Ho Lee, Seung Il Ha, Min Su Cho, Yong Bo Jeong, Kyung Don Hahm, Yoon Kyung Lee, In Cheol Choi |
1Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. icchoi@amc.seoul.kr
2Department of Anesthesiology and Pain Medicine, The National Police Hospital, Seoul, Korea. |
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| Abstract |
BACKGROUND
Hypoperfusion during manipulation of the heart in off-pump coronary artery bypass (OPCAB) surgery may lead to postoperative neurological complications. Therefore, it will be necessary to monitor cerebral function during OPCAB surgery. In this study, we compared regional cerebral oxygenation (rSO2) by near-infrared spectroscopy (NIRS) with jugular bulb venous oxygen saturation (SjvO2) and assessed whether rSO2 measured by NIRS could be an alternative method of SjvO2 during OPCAB surgery.
METHODS
A total of 20 patients who underwent OPCAB surgery were studied. A fiberoptic catheter was placed in the right jugular bulb to measure SjvO2 while a cerebral oximeter based on NIRS, INVOS 5100B was used to monitor rSO2. Radial arterial and jugular bulb blood samples were drawn simultaneously from baseline every hour during operation.
The values of rSO2 were compared with SjvO2 values.
RESULTS
For all data points (n = 78) for all patients combined, rSO2 values were significantly correlated with SjvO2 values (r = 0.513, P < 0.0001). There were significant correlations between arterial carbon dioxide and values of SjvO2 (r = 0.393, P = 0.0002) and rSO2 (r = 0.432, P < 0.0001).
CONCLUSIONS
We concluded that NIRS correlates with SjvO2 in this patient population. These findings suggest that near-infrared spectroscopy may be useful in assessing cerebral oxygenation during OPCAB surgery. |
| Key Words:
cardiac anesthesia; cerebral oxygenation; jugular bulb venous oxygen saturation; near-infrared spectroscopy; off-pump CABG |
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