Fig. 3
Cardiac function and hemodynamic indexes at different time points in the four groups. A Bar graphs of quantification of CCE change levels. B Bar graphs of quantification of dp/dt change levels. C Bar graphs of quantification of HR change levels. D Bar graphs of quantification of MAP change levels. E Bar graphs of quantification of SVR change levels. CCE cardiac circulation efficiency; dp/dt maximum pressure gradient; HR heart rate; MAP mean arterial blood pressure; SVR systemic vascular resistance. T1: before dexmedetomidine infusion; T2: dexmedetomidine loading dose finish; T3: surgery beginning; T4: 30 min after surgery beginning; T5: 1 h after surgery beginning; T6: surgery ending; T7: 1 h after transferring to PACU. a P < 0.05, c P < 0.01, compared with T1; b P < 0.05, dP < 0.01, compared with T2; △ P < 0.05, * P < 0.01, compared with group C; # P < 0.05, ▲ P < 0.01, compared with group D1; ※ P < 0.05, P < 0.01, Compared with group D2