Stopped: More than 100 invasive and non-invasive QpQs data were collected
In pediatric cardiac patients with shunt dependent pulmonary circulation, Qp/Qs ratio is a important parameter indicating the balance of pulmonaty and systemic circulation. This study will calculate Qp/Qs using variables measured using non-invasive monitors (cerebral oximeter and pulse oximeter). This value will be compared with Qp/Qs calculated using variables obtained from blood sample.
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the difference between Qp/Qs-monitor and Qp/Qs-blood
Timeframe: within 1 week after surgery