Table 3.

Surgical field as graded by the surgeon according to the Fromme-Boezaart grading scale

Fromme-Boezaart grade	Metoprolol group (n = 30)	Placebo group (n = 30)	p value
0	0 (0)	0 (0)
1	17 (56.7)	0 (0)
2	13 (43.3)	12 (40)
3	0 (0)	10 (33.3)	0.0001
4	0 (0)	8 (26.7)
5	0 (0)	0 (0)

Data are presented as n (%).