Fig. 5From: Effects of dexmedetomidine on stress hormones in patients undergoing cardiac valve replacement: a randomized controlled trialComparison of plasma 5-HT concentration at different timepoints between the two groups. Different timepoints as follows: T0: baseline; T1: at sternum sawing; T2: at end of extracorporeal circulation; T3: 24 h after operationBack to article page