Table 2 Hemodynamic parameters of brachial artery and temperature of skin in different concentration groups at baseline (t₀) and 30 min after brachial plexus block (t₁)

TAMAX(cm/s)

t₀

23.1(5.6)

20.9(5.9)

19.6(5.6)

19.1(6.0)

18.7(8.4)

t₁

29.7(7.5)^*

33.6(8.1)^*

35.5(8.1)^*

39.1(10.6)^*

44.8(18.8)^*

CSA(cm²)

t₀

0.126(0.025)

0.140(0.056)

0.133(0.031)

0.131(0.035)

0.114(0.028)

t₁

0.145(0.032)^*

0.159(0.062)^*

0.155(0.038)^*

0.162(0.042)^*

0.149(0.038)^*

BF(ml/s)

t₀

178.2(62.5)

175.9(93.6)

158.2(65.0)

148.6(59.8)

127.6(61.7)

t₁

259.3(87.7)^*

320.3(152.0)^*

330.4(118.4)^*

378.7(143.9)^*

399.7(190.9)^*

Ts(°C)

t₀

31.0(1.4)

29.6(1.1)

30.2(1.4)

29.5(1.3)

29.5(1.1)

t₁

32.2(1.2)^*

31.5(0.9)^*

32.5(1.2)^*

31.8(1.3)^*

31.9(1.2)^*