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Table 1 Baseline data of all included patients

From: Impact of smoking on early clinical outcomes in patients undergoing coronary artery bypass grafting surgery

Variables

Non-smoking group

Smoking group

Total

Former smoking subgroup

Current smoking subgroup

(n = 1544)

(n = 2186)

(n = 614)

(n = 1572)

Age (years)

65.7 ± 9.7

62.2 ± 9.4*

60.7 ± 8.8*

65.3 ± 9.2

Male

1051 (68.1%)

2156 (98.6%)*

602 (98.0%)*

1554 (98.9%)*

BMI (kg/m2)

24.8 ± 3.2

25.1 ± 3.1*

25.2 ± 3.0*

24.9 ± 3.1

Familial history of CAD

1425(92.3%)

1994(91.2%)

556(90.6%)

1438(91.5%)

Diabetes mellitus

559(36.2%)

783(35.8%)

230(37.5%)

553(35.2%)

Hypertension

897(58.1%)

1103 (50.5%)*

344(56.0%)

759 (48.3%)*

Hyperlipemia

597(38.7%)

684 (31.3%)*

212(34.5%)

472 (30.0%)*

COPD

94 (6.1%)

306 (14.0%)*

97 (15.8%)*

209 (13.3%)*

History of MI

721(46.7%)

1158 (53.0%)*

319 (51.9%)*

839(53.4%)*

Prior CVA

240(15.5%)

348(15.9%)

108(17.6%)

240(15.3%)

Coronary artery lesion

    

Double-vessel

134(8.7%)

198 (9.0%)

54 (8.8%)

144(9.1%)

Triple-vessel

1408(91.2%)

1985(90.8%)

558(90.9%)

1427(90.8%)

Left main

378(24.5%)

529 (24.2%)

147 (23.9%)

382 (24.3%)

SYNTAX score

    

Low: ≤ 22

278 (18.0%)

306 (14.0%)

101 (16.4%)

200 (13.1%)

Intermediate: 23-32

793 (51.4%)

1194 (54.6%)

324 (52.8%)

870 (55.3%)

High: ≥33

473 (30.6%)

686 (31.4%)

189 (30.8%)

497 (31.6%)

LVEF (%)

59.7 ± 9.0

57.9 ± 9.9*

57.5 ± 9.7*

58.1 ± 9.8*

>50%

1275 (82.6%)

1631 (74.6%)*

463 (75.4%)*

1168 (74.3%)*

35-50%

178 (11.5%)

407(18.6%)*

99 (16.1%)*

308 (19.6%)*

<35%

91 (5.9%)

148 (6.8%)*

52(8.5%)*

96 (6.1%)

Emergence operation

123 (8.0%)

179 (8.2%)

49 (7.9%)

130 (8.3%)

On-pump CABG

418(27.1%)

439 (20.1%)*

163(26.5%)

276 (17.6%)*

CPB (min)

78.2 ± 31.4

79.6 ± 27.8

75.5 ± 24.8

80.1 ± 28.4

ACC (min)

57.2 ± 20.6

58.5 ± 19.5

57.4 ± 18.6

59.4 ± 20.6

Use of IMA

1518 (98.3%)

2144 (98.1%)

603 (98.2%)

1541 (98.0%)

Number of grafts

3.3 ± 0.5

3.3 ± 0.4

3.3 ± 0.6

3.3 ± 0.4

  1. Fisher’s exact test was employed to compare enumeration data, and t-test to compare measurement data.
  2. *p < 0.05 (as compared to Non-smoking group).
  3. BMI, body mass index; CAD, coronary artery disease; COPD, chronic obstructive pulmonary disease; MI, myocardial infarction; CVA, cerebro-vascular accident; LVEF, Left ventricular ejection fraction; CABG, coronary artery bypass grafting; On-pump CABG, CABG with cardiopulmonary bypass; CPB, cardiopulmonary bypass; ACC, aortic cross clamp; IMA, internal mammary artery.
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Journal of Cardiothoracic Surgery

ISSN: 1749-8090

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