Nitroprusside

Nitroglycerin

Diltiazem

Doputamine

Saline Sol.

First fow

68.1 ± 20.7

55.8 ± 14.8

49.8 ± 11.6

51.0 ± 13.2

48.0 ± 13.2

Second flow

116.3 ± 17

74.3 ± 13.6

53.8 ± 13.6

54.3 ± 9.4

54.4 ± 11.9

P value

0.001

0.002

>0.05

>0.05

>0.05