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Table 2 Clinical characteristics of our elective cardiac surgical patients with and without anemia

From: Preoperative anemia and transfusion in cardiac surgery: a single-centre retrospective study

Parameters

Non-Anemic (N = 678)

Anemic (N = 119)

Total (N = 797)

P value*

Mild Anemic (N = 80)

Mod/Sev. Anemic (N = 39)

P value†

Demographics

 Age (yr)

66 (56–73)

69 (63–76)

66 (56–73)

0.003

70 (64–76)

66 (57–73)

0.068

 Female

206 (30)

56 (47)

262 (33)

0.001

33 (41)

23 (59)

0.081

 Weight

85 (73–97)

79 (68–90)

83 (71–96)

0.002

82 (72–93)

73 (63–84)

0.005

 BMI (kg/m2)

29 (25–33)

29 (25–33)

29 (25–33)

0.340

29 (25–34)

28 (23–31)

0.031

 BSA (m2)

2.0 (1.8–2.2)

1.9 (1.7–2.1)

2.0 (1.8–2.1)

< 0.001

1.9 (1.8–2.1)

1.8 (1.6–1.9)

0.006

Surgical procedures

  

0.175

   

NA

 Isolated CABG

157 (23)

34 (29)

191 (24)

 

24 (30)

10 (26)

 

 Isolated valve

290 (43)

55 (46)

345 (43)

 

35 (44)

20 (51)

 

 CABG & valve

61 (9)

13 (11)

74 (9)

 

7 (9)

6 (15)

 

 Aortic surgery

96 (14)

11 (9)

107 (13)

 

9 (11)

2 (5)

 

 Adult congenital

48 (7)

5 (4)

53 (7)

 

4 (5)

1 (3)

 

 Others

26 (4)

1 (1)

27 (3)

 

1 (1)

0 (0)

 

Surgical parameters

 Repeat sternotomy

74 (11)

15 (13)

89 (11)

0.635

13 (16)

2 (5)

0.139

 Cross-clamp time (min)

84 (61–110)

77 (59–103)

83 (61–110)

0.252

80 (58–106)

76 (59–102)

0.777

 Total bypass time (min)

106 (80–141)

99 (81–136)

104 (80–141)

0.455

102 (80–144)

95 (84–127)

0.551

 DHCA

32 (5)

6 (5)

38 (5)

0.817

6 (8)

0 (0)

0.176

Co-morbidities

 Diabetes

161 (24)

58 (49)

219 (27)

< 0.0001

38 (48)

20 (51)

0.845

 CVA

41 (6)

14 (12)

55 (7)

0.030

6 (8)

8 (21)

0.065

Lab and imaging parameters

 eGFR (ml/min/1.73 m2)

80 (66–92)

60 (41–85)

78 (63–92)

< 0.0001

67 (45–85)

56 (18–83)

0.046

 LVEF (%)

   

0.029

  

0.004

  ≥ 50

560 (83)

92 (77)

652 (82)

 

66 (83)

26 (67)

 

 < 50

95 (14)

27 (23)

122 (15)

 

14 (18)

13 (33)

 

Preoperative intervention

 Referral to BCC

NA

9 (8)

NA

NA

5 (6)

4 (10)

0.473

 Received treatment at BCC

NA

3 (3)

NA

NA

0 (0)

3 (8)

0.033

 Days from PAC to surgery

7 (2–15)

7 (2–17)

7 (2–15)

0.990

7 (1–14)

7 (2–18)

0.537

  1. BCC blood conservation clinic, BMI body mass index, BSA body surface area, CABG coronary artery bypass graft, CVA cerebrovascular accident, DHCA deep hypothermic circulatory arrest, eGFR estimated glomerular filtration rate, Hb hemoglobin, LVEF left ventricular ejection fraction, min minute, mod/sev moderate/severe, PAC pre-admission clinic, P value * p value between anemic and non-anemic groups, P value† p value between mild anemic and moderate/severe anemic groups, yr year