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Table 1 The clinical characteristics of 155 patients of two groups

From: Surgical outcomes associated with sleep apnea syndrome in Stanford A aortic dissection patients

Variables

Total cases

SAS+

SAS

p-value

(n = 155)

(n = 89)

(n = 66)

 

Preoperative characteristics

Age (years)

54.45 ± 8.46

59.63 ± 6.73

47.5 ± 4.73

< 0.001

Male, n (%)

125 (80.65%)

75 (84.27%)

50 (75.76%)

0.185

BMI (kg/m2)

23.4 ± 1.7

25.4 ± 1.7

22.2 ± 1.2

< 0.001

Abdominal circumference (cm)

86.4 ± 11.2

85.0 ± 9.5

86.5 ± 10.5

0.354

Systolic BP on arrival (mm Hg)

176.8 ± 38.5

190.6 ± 39.0

166.5 ± 35.8

< 0.001

Diastolic BP on arrival (mm Hg)

95.2 ± 17.0

105.0 ± 19.2

92.5 ± 19.8

< 0.001

Heart rate on arrival (bpm)

80 (54, 108)

85 (56, 114)

79 (51, 109)

0.355

History of hypertension, n (%)

134 (86.5)

80 (89.89)

54 (81.82)

0.147

History of diabetes, n (%)

26 (16.8)

18 (20.22)

8(12.12)

0.182

History of hyperlipidemia, n (%)

55 (35.5)

26 (29.21)

29 (43.94)

0.058

Renal dysfunctiona, n (%)

38 (24.5)

24 (26.97)

14 (21.21)

0.793

Marfan syndrome (MFS), n (%)

21 (13.5)

18(20.22)

3 (4.55)

0.050

Malperfusion syndromes, n (%)

27 (17.4)

17 (19.10)

10 (15.15)

0.521

LVEF (%)

62.6 (60.6, 67.8)

62.0 (60.0,67.6)

63.2 (61.0, 67.8)

0.698

Patient source, n (%)

   

0.744

Local

69 (44.5)

41 (46.1)

28 (42.4)

 

Transfer from other hospitals

86 (55.5)

48 (53.9)

38 (57.6)

 

Procedural data

Time from symptom onset to surgery (hours)

6.6 ± 5.4

6.5 ± 4.5

7.0 ± 4.7

0.503

Operation time (min)

284 (260, 358)

285 (258, 345)

280 (261, 359)

0.181

Cardiopulmonary bypass (min)

138 (104, 166)

139 (105, 173)

136 (102, 162)

0.660

Cross-clamp time (min)

56.6 (45.5, 67.2)

56.8 (45.9, 67.7)

56.4 (45.5, 67.0)

0.799

  1. aDefined as preoperative creatinine greater than 1.5 mg/dL. SAS, sleep apnea syndrome; SAS+, SAS-positive, all patients with AHI > 5 events/h; SAS, SAS-negative, all patients with AHI ≤ 5 events/h; BMI, body mass index; LVEF, left ventricular ejection fraction; p-value, variables of patients in SAS+ group compared with those in SAS group. Data are expressed as mean ± standard deviations (SD), median ( first quartile, third quartile ) or number (%). Chi-square or Fisher test for categorical variables and t test or wilcoxon rank sum test for continuous variables