. Author manuscript; available in PMC: 2010 Mar 17.

Published in final edited form as: J Thorac Cardiovasc Surg. 2009 Feb 23;138(1):206–214. doi: 10.1016/j.jtcvs.2008.12.028

TABLE 2. Operative and postoperative details.

Variable	Normoxic (n = 35)	Hyperoxic (n = 32)	Effect size	(95% CI)	P value
Operative details
Oxygen saturation (mm Hg)^*	79.9 (7.61)	78.5 (7.22)	1.34^‡	(−2.29 to 4.97)	.46
Bypass time (min)^†	82.9 (41–147)	89.7 (43–210)	0.93^§	(0.77 to 1.11)	.40
Crossclamp time (min)^*	52.0 (20.52)	52.3 (24.66)	−0.39^‡	(−14.16 to 13.38)	.96
Postoperative details
Ventilation time (min)^†	21.5 (2–191)	19.6 (3–72)	1.12^§	(0.67 to 1.87)	.66
Length of stay (d)(median [IQR])	10.5 (6.0–14.0)	8.5 (6.5–12.5)	0.90^\|\|	(0.55 to 1.50)	.67
Dopamine
Coming off bypass (μg · kg⁻¹ · min⁻¹)	6.3 (3.44)	6.8 (4.84)	0.53^‡	(−2.61 to 1.56)	.62
Peak dose (μg · kg^-1 · min^-1)^*	11.8 (5.22)	9.6 (5.36)	2.19^‡	(−0.58 to 4.96)	.12
Duration (h)^†	33.5 (6–256)	28.6 (0–366)	1.19^§	(0.73 to 1.96)	.48
Epinephrine (No. [%])	2 (6)	4 (14)

CI, Confidence interval; IQR, interquartile ratio.

Values are expressed as mean (SD).

^†

Values are expressed as geometric mean with range.

^‡

Difference in means (normoxic/hyperoxic).

^§

Ratio of geometric means (normoxic/hyperoxic).

^||

Hazard ratio for hospital discharge (normoxic/hyperoxic).