Table 5.

Heart rate changes in the study groups (beats/min)

Time	Metoprolol group (n = 30)	Placebo group (n = 30)	p value
Baseline measurement	60.65±6.67	72±6.49	0.0001
Post-induction
3 min	62.85±6.69	73.8±8.06	0.0001
6 min	65.45±8.31	70.85±6.17	0.0001
9 min	67.1±8.77	77.45±9.17	0.0001
12 min	66.35±8.22	79.15±6.76	0.0001
15 min	64.65±6.61	78.75±9.38	0.0001
30 min	65±8.22	76.95±5.55	0.0001
45 min	63.3±5.97	77.25±7.27	0.0001
60 min	62.3±7.26	78.25±6.98	0.0001
75 min	61.45±9.08	75.5±6.26	0.0001
90 min	62.4±7.26	77.25±7.27	0.0001
105 min	63.15±4.08	78.25±6.98	0.0001
120 min	66.15±1.18	77.45±9.17	0.0001

Data are presented as mean ± standard deviation.