Table 2.

Hemodynamic Variables in the Control, CPB, and Lung Perfusion Groups During the Study

Parameter	Baseline	End of bypass	90 min after bypass	Interaction P value
HR (bpm)
Control group	109 ± 18	111 ± 16	118 ± 19	<0.001
CPB group	101 ± 17	128 ± 17*	124 ± 22
LP group	93 ± 10	90 ± 14†‡	101 ± 17‡
MAP (mm Hg)
Control group	69 ± 6	79 ± 9	74 ± 7	0.11
CPB group	66 ± 9	67 ± 14	61 ± 5
LP group	68 ± 6	66 ± 17	56 ± 6
PAP mean (mm Hg)
Control group	18 ± 1	19 ± 2	19 ± 4	0.08
CPB group	17 ± 2	17 ± 2	17 ± 2
LP group	19 ± 2	22 ± 3	21 ± 3
PCWP (mm Hg)
Control group	11 ± 2	11 ± 1	12 ± 2	0.37
CPB group	10 ± 3	9 ± 4	9 ± 3
LP group	12 ± 2	12 ± 2	12 ± 1
CI (L·min−1·m−2)
Control group	3.9 ± 0.8	4.2 ± 0.8	4.2 ± 1	0.03
CPB group	4 ± 0.6	3.6 ± 0.8	3.2 ± 0.5†
LP group	3.8 ± 0.9	4.1 ± 0.7	3.6 ± 0.4
SVRI (dynes·s·cm−5·m−2)
Control group	1314 ± 332	1415 ± 291	1315 ± 248	0.02
CPB group	1204 ± 206	1348 ± 385	1350 ± 208
LP group	1290 ± 292	1070 ± 294	1038 ±162‡
PVRI (dynes·s·cm−5·m−2)
Control group	144 ± 52	154 ± 66	150 ± 72	0.36
CPB group	152 ± 83	187 ± 61	210 ± 72
LP group	155 ± 44	191 ± 38	209 ± 61
RVSWI (g·m−2·beat−1)
Control group	5 ± 1	6 ± 1	6 ± 2	<0.001
CPB group	6 ± 1	4 ± 2	4 ± 1
LP group	5 ± 2	8 ± 3*‡	6 ± 1
LVSWI (g·m−2·beat−1)
Control group	28 ± 6	34 ± 7	30 ± 5	<0.001
CPB group	31 ± 9	22 ± 4†	19 ± 4*†
LP group	31 ± 8	35 ± 13	22 ± 4*†

bpm = beats per minute; CI = cardiac index; CPB = cardiopulmonary bypass; HR = heart rate; LP = lung perfusion; LVSWI = left ventricular systolic work index; MAP = mean arterial pressure; PAP = pulmonary arterial pressure; PCWP = pulmonary artery occlusion pressure; PVRI = pulmonary vascular resistance; RVSWI = right ventricular systolic work index; SVRI = systemic vascular resistance index.

^*P < 0.05 compared with baseline.

^†P < 0.05 compared with control group at the same moment.

^‡P < 0.05 compared with CPB group at the same moment.