The importance of SpO2 and FIO2 for anesthetic management for Norwood's operation
Taguchi, A.; Takada, K.; Suzuki, H.
Masui. Japanese Journal of Anesthesiology 44(9): 1269-1272
1995
ISSN/ISBN: 0021-4892 PMID: 8523665 Document Number: 444784
The systemic and pulmonary vascular resistance needs to be balanced before cardiopulmonary bypass (CPB) and high flow pulmonary circulation must be avoided after CPB during anesthetic management for Norwood's operation. The level of SpO-2 was controlled at 75-80% to maintain systemic and pulmonary circulation. The relationship between the change of color of the lung and level of Spo, through gradual increase of pulmonary blood flow was carefully observed. As SpO-2 level increased, lung changed color from white, pink to red. The SpO-2 level of lung in red color was above 85%, suggesting high flow pulmonary circulation. To decrease the level Of SPO-2, FIO-2 was decreased. The lung changed to pink and balance of systemic and pulmonary circulation was maintained, reconfirming that control of SpO-2 and FIO-2 levels is important for this operation.