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Changes in cardiac output (L/min) with time. T0: baseline (before induction); T1: postinduction; T2: after CO2 pneumoperitoneum; T3: after 5 min of 45° Trendelenburg position; T4: after 20 min of 45° Trendelenburg position; T5: after 1 h; T6: after 2 h; T7: after deflation of CO2 pneumoperitoneum in the supine position. *Statistically significant compared with the baseline value (P>0.05)
