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  Indian J Med Microbiol
 

Figure 3: Heart rate (beat/min) changes in the three groups. *Significant difference as compared to the preoperative value in dexmedetomidine group.Significant difference between magnesium sulfate group and dexmedetomidine group.Significant difference between ropivacaine group and dexmedetomidine group

Figure 3: Heart rate (beat/min) changes in the three groups. *Significant difference as compared to the preoperative value in dexmedetomidine group.<sup>†</sup>Significant difference between magnesium sulfate group and dexmedetomidine group.<sup>‡</sup>Significant difference between ropivacaine group and dexmedetomidine group