STUDY OF REGIONAL CEREBRAL OXYGEN-SATURATION DURING PERCUTANEOUS CARDIOPULMONARY SUPPORT

The purpose of this study was to evaluate the change of regional cereb ral oxygen saturation (rSO(2)) during percutaneous cardiopulmonary sup port (PCPS) in patients with cardiogenic shock. Fifteen patients with cardiogenic shock were evaluated during PCPS by continuous monitoring of rSO(2), systemic venous oxygen saturation (SVO2), and hemodynamics. The brain damage of these patients was also evaluated during and afte r PCPS. There were 10 males and 5 females. Their ages ranged from 57 t o 79 years old (average: 60.0 +/- 14). Two patients were unconscious b efore PCPS, and 11 received intraaortic balloon pumping (IABP) before PCPS. The change of rSO(2) was significantly correlated with the chang e of SVO2. The average of rSO(2) was 64 +/- 3% at the stable hemodynam ic condition. The rSO(2) with pulsatile PCPS was higher than that with nonpulsatile PCPS. There was no correlation between brain damage and rSO(2). The patients with low rSO(2) (<50%) that resulted in poor LV f unction could not be weaned from PCPS. In conclusion, the continuous m onitoring of rSO(2) during PCPS could be a useful tool.