Ultrasound-guided dexmedetomidine combination with modified high fascia iliaca compartment block for arthroscopic knee surgery: what is the optimal dose of dexmedetomidine?

Table 3 Adverse events in patients

Item	D₀ Group (n = 32)	D_a Group (n = 32)	D_b Group (n = 32)	P
Nausea	11(34.4%)	5(15.6%)	1(3.1%)	P = 0.001*
Vomiting	8(25%)	4(12.5%)	2(6.1%)	P = 0.003*
Pruritus	6(18.8%)	4 (12.5%)	1(3.1%)	P = 0.006*
Delay in awakening	0(0%)	0(0%)	0(0%)	P = NA
Respiratory depression	0(0%)	0(0%)	0(0%)	P = NA

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