Table 2.

Hemoglobin (Hb), hematocrit, oxygen saturation (SaO₂), oxygen saturation (pO₂), arterial oxygen content (CaO₂), venous oxygen content (CvO₂), oxygen delivery, (D_O2); oxygen consumption, (V_O2), at baseline (37°C_BL), during and after rewarming (30°C_RW, and 37°C_RW) from hypothermia in untreated and treated rats with levosimendan or nitroprusside (each group n = 7).

Parameter	Group	37°CBL	30°CRW	37°CRW
Hb (g/dL)	Control	12.56 ± 0.96	14.69 ± 0.25¤	13.27 ± 0.84¤
	Levosimendan	12.86 ± 1.18	14.29 ± 0.36¤	13.01 ± 0.88¤
	Nitroprusside	12.13 ± 0.71	14.04 ± 0.32¤	12.77 ± 0.62¤
Hct (%)	Control	38.63 ± 2.93	45.04 ± 0.74¤	40.80 ± 2.55¤
	Levosimendan	39.59 ± 3.53	43.80 ± 1.10¤	39.99 ± 2.73¤
	Nitroprusside	37.37 ± 2.12	43.13 ± 0.97¤	39.29 ± 1.85¤
SaO2 (%)	Control	86.29 ± 8.93	95.10 ± 0.77¤	91.80 ± 4.17¤
	Levosimendan	88.46 ± 3.46	91.66 ± 2.53	92.13 ± 3.71
	Nitroprusside	91.67 ± 2.98	94.76 ± 0.55	91.17 ± 4.28
pO2 (kPa)	Control	9.77 ± 2.39	17.38 ± 1.41	12.22 ± 2.54¤
	Levosimendan	9.55 ± 1.01	15.28 ± 2.38	11.12 ± 1.87¤
	Nitroprusside	12.16 ± 0.70	17.61 ± 0.85	12.31 ± 0.73¤
CaO2 (mg/dL)	Control	14.71 ± 1.61	18.98 ± 0.39	16.58 ± 0.74
	Levosimendan	15.49 ± 1.89	17.92 ± 0.79	16.32 ± 1.35
	Nitroprusside	15.16 ± 0.70	18.25 ± 0.48	15.88 ± 1.03
DO2 (mg/min)	Control	1,180 ± 142	766 ± 54¤	784.5 ± 89¤
	Levosimendan	1,281 ± 117	935 ± 51¤*	1083 ± 81¤*
	Nitroprusside	1,235 ± 103	820 ± 68¤	866 ± 111¤†
VO2 (mg/min)	Control	–	–	465 ± 40
	Levosimendan	–	–	586 ± 109*
	Nitroprusside	–	–	521 ± 110 †
pH	Control	7.35 ± 0.03	7.22 ± 0.03¤	7.30 ± 0.04¤
	Levosimendan	7.35 ± 0.04	7.22 ± 0.01¤	7.33 ± 0.03¤
	Nitroprusside	7.38 ± 0.02	7.20 ± 0.02¤	7.28 ± 0.03¤
pCO2 (kPa)	Control	5.01 ± 0.88	5.01 ± 0.42	4.11 ± 0.56¤
	Levosimendan	5.07 ± 0.26	5.50 ± 0.22	4.31 ± 0.38¤
	Nitroprusside	4.52 ± 0.49	5.50 ± 0.17¤	4.63 ± 0.34
Lactate (mmol/L)	Control	0.90 ± 0.51	2.97 ± 0.23¤	3.64 ± 0.84¤
	Levosimendan	0.87 ± 0.51	3.01 ± 0.41¤	3.26 ± 0.67¤
	Nitroprusside	0.63 ± 0.19	3.93 ± 0.31¤†*	4.10 ± 0.52¤
BE (mmol)	Control	−4.60 ± 2.31	−11.80 ± 0.57¤	−10.16 ± 1.96¤
	Levosimendan	−3.94 ± 2.22	−10.23 ± 0.68¤	−8.41 ± 1.12¤
	Nitroprusside	−4.93 ± 1.45	−11.11 ± 0.67¤	−9.57 ± 1.07¤
${\text{HCO}}_3^{-}$ (mmol/L)	Control	20.44 ± 1.52	15.00 ± 0.58¤	16.54 ± 1.46¤
	Levosimendan	21.02 ± 1.87	15.82 ± 0.46¤	17.80 ± 0.90¤
	Nitroprusside	20.53 ± 1.01	15.25 ± 0.53¤	16.72 ± 0.84¤

Values are mean ± SD.

^*P < 0.05 vs. control group at corresponding temperatures.

^†P < 0.05 vs. levosimendan group at corresponding temperatures.

^¤P < 0.05 vs. 37°C_BL within-group (Holm–Sidak method).