Effects of Preoperative Intravenous Clonidine in Patients Undergoing Cataract Surgery: A Double-Blind, Randomized Trial

Table 4

Incidence of arrhythmia and myocardial ischemia (percentage).

	Arrhythmia			Ischemia
	Clonidine ()	Placebo ()		Clonidine ()	Placebo ()
Control	7 (46.6%)	6 (37.5%)	0.7224	2 (13.3%)	0 (0%)	0.23
5 min	3 (20%)	3 (18.7)	1.0000	0 (0%)	0 (0%)	NSA
15 min	2 (13.3%)	5 (31.3)	0.40	1 (6.6%)	0 (0%)	0.48
Blepharostat	4 (26.7%)	5 (31.3)	1.00	0 (0%)	0 (0%)	NSA
Incision of the cornea	0 (0%)	4 (25%)	0.10	0 (0%)	0 (0%)	NSA
Capsulorhexis	1 (6.6%)	4 (25%)	0.33	0 (0%)	0 (0%)	NSA
Phacoemulsification	4 (26.7%)	6 (37.5%)	0.70	0 (0%)	3 (18.7%)	0.23
Irrigation-aspiration	3 (20%)	5 (31.3)	0.69	0 (0%)	3 (18.7%)	0.23
Lens implantation	2 (13.3%)	6 (37.5%)	0.22	0 (0%)	3 (18.7%)	0.23
End	0 (0%)	5 (31.3)	0.04	0 (0%)	0 (0%)	NSA

NSA: not submitted to analysis; Fisher’s exact test.