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Table 4 Intraoperative and postoperative hemodynamics

From: A perioperative infusion of sodium bicarbonate does not improve renal function in cardiac surgery patients: a prospective observational cohort study

 

Total cohort

Control - no bicarbonate

Intervention - bicarbonate

Significance, P-value

Number of patients

584

304

280

 

HR, bpm, preoperative

68 (67, 70)

68.5 (67, 70)

68 (67, 70)

0.875

MAP, mmHg, preoperative

96 (95, 98)

97 (95, 100)

95 (93, 97)

0.396

MAP, mmHg, before induction

85 (82, 85)

87 (85, 90)

80 (76, 83)

< 0.0001

MAP, mmHg, 30 minutes before CPB

70 (70, 71)

70 (70, 72)

70 (68, 71)

0.135

MAP, mmHg, 30 minutes after CPB

69 (68, 70)

70 (69, 71)

69 (67, 70)

0.109

MAP, mmHg, end of surgery

72 (71, 73)

73 (71, 74)

71 (70, 73)

0.150

MAP, mmHg, ICU admission

76 (75, 77)

76 (75, 78)

75 (73, 78)

0.339

MAP, mmHg, 2 h after ICU admission

73 (72, 74)

73 (71, 75)

73 (72, 74)

0.833

MAP, mmHg, 4 h after ICU admission

74 (72, 75)

74 (72, 76)

73 (72, 74)

0.541

MAP, mmHg, 6 h after ICU admission

73 (73, 74)

74 (73, 75)

73 (72, 75)

0.361

MAP, mmHg, 8 h after ICU admission

74 (73, 75)

74 (72, 75)

74 (72, 75)

0.632

CVP, mmHg, after induction

11 (10, 11)

11 (10, 11)

11 (10, 12)

0.340

CVP, mmHg, 30 minutes before CPB

8 (8, 8)

8 (8, 9)

8 (7, 9)

0.561

CVP, mmHg, 30 minutes after CPB

11 (10, 11)

10 (10, 11)

11 (10, 12)

0.663

CVP, mmHg, end of surgery

12 (11, 12)

12 (11, 12)

12 (11, 12)

0.396

CVP, mmHg, ICU admission

15 (15, 16)

16 (15, 16)

15 (15, 16)

0.689

CVP, mmHg, 2 h after ICU admission

15 (15, 16)

16 (15, 16)

15 (14, 15)

0.129

CVP, mmHg, 4 h after ICU admission

15 (15, 16)

15 (14, 16)

15 (15, 16)

0.425

CVP, mmHg, 6 h after ICU admission

14 (14, 15)

14 (14, 15)

14 (14, 15)

0.358

CVP, mmHg, 8 h after ICU admission

13 (13, 14)

13 (12, 14)

13 (12, 14)

0.801

MPAP, mmHg, After induction

25 (24, 27)

26 (24, 29) n = 61

25 (22, 29) n = 46

0.380

MPAP, mmHg, 30 minutes after CPB

25 (23, 27)

26 (23, 28) n = 76

25 (22, 27) n = 75

0.466

MPAP, mmHg, 30 minutes after CPB

26 (24, 27)

25 (23, 28) n = 104

26 (24, 28) n = 97

0.324

MPAP, mmHg, end of surgery

26 (25, 28)

26 (24, 28) n = 107

27 (24, 29) n = 94

0.659

MPAP, mmHg, ICU admission

29 (28, 30)

30 (29, 33) n = 113

27 (26, 29) n = 84

0.006

MPAP, mmHg, 2 h after ICU admission

30 (29, 31)

30 (29, 31) n = 120

29 (28, 31) n = 104

0.538

MPAP, mmHg, 4 h after ICU admission

30 (29, 31)

31 (29, 32) n = 126

29 (28, 30) n = 107

0.448

MPAP, mmHg, 6 h after ICU admission

29 (27, 29)

29 (27, 30) n = 125

28 (27, 30) n = 109

0.892

MPAP, mmHg, 8 h after ICU admission

28 (27, 29)

28 (26, 30) n = 128

28 (26, 30) n = 113

0.731

CI, L/min/m2, after induction

2.45 (2.24, 2.66)

2.46 (2.14, 2.77) n = 56

2.44 (2.17, 2.71) n = 38

0.947

CI, L/min/m2, 30 minutes before CPB

2.68 (2.57, 2.80)

2.62 (2.45, 2.79) n = 76

2.75 (2.58, 2.92) n = 75

0.269

CI, L/min/m2, 30 minutes after CPB

3.22 (3.08, 3.37)

3.14 (2.94, 3.34) n = 104

3.31 (3.09, 3.53) n = 97

0.261

CI, L/min/m2, end of surgery

3.02 (2.92-3.13)

2.95 (2.79, 3.11) n = 107

3.11 (2.97, 3.25) n = 94

0.140

CI, L/min/m2, ICU admission

2.80 (2.69, 2.92)

2.87 (2.73, 3.01) n = 113

2.71 (2.52, 2.89) n = 84

0.171

CI, L/min/m2, 2 h after ICU admission

3.06 (2.95, 3.17)

3.07 (2.92, 3.22) n = 120

3.05 (2.88, 3.21) n = 104

0.835

CI, L/min/m2, 4 h after ICU admission

3.12 (3.02, 3.23)

3.10 (2.98, 3.23) n = 126

3.15 (2.98, 3.32) n = 107

0.675

CI, L/min/m2, 6 h after ICU admission

3.24 (3.14, -3.35)

3.22 (3.10, 3.34) n = 125

3.27 (3.08, 3.46) n = 109

0.686

CI, L/min/m2, 8 h after ICU admission

3.18 (3.09, 3.28)

3.23 (3.11, 3.35) n = 128

3.13 (2.98, 3.28) n = 113

0.301

SvO 2 , %, after induction (n = 118)

79 (77, 80)

79 (78, 81) n = 61

77 (75, 79) n = 46

0.060

SvO 2 , %, 30 minutes before CPB (n = 147)

82 (81, 82)

82 (81, 83) n = 76

81 (80, 82) n = 75

0.357

SvO 2 , %, 30 minutes after CPB (n = 177)

78 (77, 79)

79 (77, 80) n = 104

78 (77, 80) n = 97

0.735

SvO 2 , %, end of surgery (n = 179)

77 (76, 78)

77 (76, 79) n = 107

77 (76, 79) n = 94

0.988

SvO 2 , %, ICU admission (n = 192)

71 (70, 72)

71 (70, 73) n = 113

70 (68, 72) n = 84

0.380

SvO 2 , %, 2 h after ICU admission (n = 287)

69 (68, 70)

69 (67, 70) n = 120

69 (67, 70) n = 104

0.931

SvO 2 , % 4 h after ICU admission (n = 309)

68 (67, 69)

67 (66, 69) n = 126

68 (67, 69) n = 107

0.322

SvO 2 , %, 6 h after ICU admission (n = 316)

69 (68, 70)

69 (68, 70) n = 125

69 (67, 70) n = 109

0.587

SvO 2 , %, 8 h after ICU admission

69 (68, 70)

69 (68, 71) n = 128

69 (67, 70) n = 113

0.264

  1. Data are given as median/mean (95% confidence interval for the median/mean) as appropriate. HR: heart rate; MAP mean arterial blood pressure; CVP: central venous pressure; MPAP: mean pulmonary arterial pressure; CI: cardiac index; SvO2: mixed venous oxygen saturation. MPAP, CI, and SvO2 were not available in every patient.