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Table 6 Postoperative Outcomes (Matched)

From: Active clearance of chest tubes is associated with reduced postoperative complications and costs after cardiac surgery: a propensity matched analysis

Variable (mean or mean, n, %)

Phase 0 (n = 260)

Phase 2(n = 260)

p value

Retained Blood (composite)

60 (23%)

25 (9.6%)

<.001

Re-exploration

6 (2.3%)

2 (0.77%)

.29

Pleural Intervention-Percutaneous

57 (22%)

21 (8.1%)

<.001

Pleural Intervention- Surgical

2 (0.77%)

0 (0%)

0.25

Pericardial Intervention

4 (1.5%)

4 (1.5%)

1

# Pleural Effusions drained

139

53

.002

POAF

79 (37%) (n = 214)

55 (25%) (n = 216)

.011

Cardiac arrest

8 (3.1%)

5 (1.9%)

.58

Postoperative blood products used

60 (23%)

48 (18%)

.2

CT output (mL) first 24 h

753 [584–975]

678 [539–950]

.038

Total CT output (mL)

1152 [854–1656]

1038 [760–1431]

.020

Total CT (days)

3 [3–4]

2 [2–2]

<.001

Infection (any)

37 (14%)

10 (3.8%)

<.001

Surgical site deep

0 (0%)

0 (0%)

1

Surgical site superficial

0 (0%)

0 (0%)

1

Surgical site mediastinitis

0 (0%)

0 (0%)

1

Pneumonia

20 (7.7%)

4 (1.5%)

.0022

Septicemia

4 (1.5%)

0 (0%)

.062

UTI

10 (3.8%)

4 (1.5%)

.18

C. Diff

3 (1.2%)

1 (0.38%)

.62

Highest postoperative creatinine

1.1 [1–1.4]

1.0 [0.8–1.2]

<.001

AKI Stage 1

78 (30%) (n = 257)

44 (17%) (n = 256)

.0014

AKI Stage 2

7 (2.7%) (n = 257)

4 (1.6%) (n = 256)

.55

AKI Stage 3

3 (1.2%) (n = 257)

1 (0.39% (n = 256)

.62

Postoperative renal dialysis

7 (2.7%)

0 (0%)

.0078

Stroke

2 (0.77%)

2 (0.77%)

1

Mortality

7 (2.7%)

7 (2.7%)

1

  1. Abbreviations: Postoperative atrial fibrillation (POAF); Chest tube (CT), Urinary Tract Infection (UTI), Clostridium difficile (C.Diff), Acute Kidney Injury (AKI),