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Table 1 Descriptive Characteristics of the Study Groups, mean ± S.D. or N (%)

From: Effect of postoperative positive airway pressure on risk of postoperative atrial fibrillation after cardiac surgery in patients with obstructive sleep apnea: a retrospective cohort study

Characteristics

No Postoperative PAPa

Postoperative PAP

p valueb

N

76 (50)

76 (50)

 

Age (yrs.)

67.3 ± 10.4

63.7 ± 12.1

0.05

Male

53 (69.7)

64 (84.2)

0.03

White

53 (69.7)

56 (73.7)

0.59

Body Mass Index (kg/m2)

32.1 ± 7.6

32.1 ± 7.1

0.99

Comorbidities

 Previous Atrial Fibrillation

16 (21.1)

16 (21.1)

1.00

 Previous Cerebrovascular Eventc

13 (17.1)

5 (6.6)

0.05

 Previous Myocardial Infarction

16 (21.1)

6 (7.9)

0.02

 COPDd

11 (14.5)

5 (6.6)

0.11

 Hypertension

63 (82.9)

59 (77.6)

0.42

 Hyperlipidemia

50 (65.8)

51 (67.1)

0.86

Perioperative Characteristics

 Elective Surgery

69 (90.8)

67 (88.2)

0.60

 Valve Surgery

44 (57.9)

47 (61.8)

0.62

 Preoperative IABPe

2 (2.6)

0 (0)

0.50

 CPB timef (mins)

153.9 ± 59.3

174.4 ± 79.7

0.07

 Aortic Cross-Clamp time (mins)

103.9 ± 44.7

121.2 ± 62.3

0.05

 Post operative day of extubation

0.5 ± 0.8

0.6 ± 1.0

0.68

 Home PAP use

17 (22.4)

62 (81.6)

<0.0001

  1. aPositive airway pressure
  2. bStudent t tests, Chi-square tests or Fisher’s exact tests were used to calculate the p value
  3. cCerebrovascular Event includes cerebral vascular accident and transient ischemic attack
  4. dChronic obstructive pulmonary disease
  5. eIntra-aortic balloon counterpulsation pump
  6. fCardiopulmonary bypass time