Lesion parameters

Before

After

P value^a

Lesion length, pre/post-nitrate

17.5 ± 7.3

17.5 ± 7.5

NS

Delta-lesion length

0.11 ± 0.58

Minimum LD, pre/post-nitrate

0.79 ± 0.53

0.83 ± 0.46

0.053

Delta-Min. LD

0.03 ± 0.21

Maximum LD, pre/post-nitrate

2.89 ± 0.46

3.07 ± 0.43

< 0.001

Delta-Max. LD

0.22 ± 0.18

Mean LD, pre/post-nitrate

1.84 ± 0.40

1.95 ± 0.36

< 0.001

Delta-Mean LD

0.11 ± 0.19

Proximal RD, pre/post-nitrate

2.86 ± 0.43

3.04 ± 0.43

< 0.001

Delta proximal RD

0.22 ± 0.18

Distal RD, pre/post-nitrate

2.57 ± 0.47

2.83 ± 0.40

< 0.001

Delta distal RD

0.29 ± 0.25

Lesion severity, pre/post-nitrate (%)

76 ± 20

71 ± 18

< 0.001

Delta obstruction diameter with nitrate (%)

-4.18 ± 11.4