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Table 3 Age-adjusted thoracic duct diameter, and tortuosity by clinical event in patients with Fontan circulation (N = 189)

From: Magnetic resonance three-dimensional steady-state free precession imaging of the thoracic duct in patients with Fontan circulation and its relationship to outcomes

Clinical event

Event

No event

p-value

Plastic bronchitis, n

2

187

 

 Age at CMR, years

7.1 ± 1.4

18.5 ± 10.0

0.11

 Maximum thoracic duct diameter, mm

2.8 (0.7)

2.8 (0.1)

0.95

 Tortuosity

  

0.51

  None/mild

1 (50%)

118 (71%)

 

  Moderate/severe

1 (50%)

49 (29%)

 

PLE, n

4

185

 

 Age at CMR, years

12.9 ± 3.9

18.5 ± 10.1

0.27

 Maximum thoracic duct diameter, mm

4.1 (0.5)

2.7 (0.1)

0.005

 Tortuosity

  

0.08

  None/mild

1 (25%)

118 (72%)

 

  Moderate/severe

3 (75%)

47 (29%)

 

NYHA class ≥ II, n

21

168

 

 Age at CMR, years

21.1 ± 11.7

18.0 ± 9.8

0.19

 Maximum thoracic duct diameter, mm

2.9 (0.2)

2.7 (0.1)

0.50

 Tortuosity

  

0.02

  None/mild

9 (45%)

110 (74%)

 

  Moderate/severe

11 (55%)

39 (26%)

 

Major thrombotic event, n

17

166

 

 Age at CMR, years

23.4 ± 17.0

17.9 ± 9.0

0.20

 Maximum thoracic duct diameter, mm

2.4 (0.3)

2.8 (0.01)

0.13

 Tortuosity

  

1.00

  None/mild

11 (73%)

102 (69%)

 

  Moderate/severe

4 (27%)

46 (31%)

 

Arrhythmia history, n

52

137

 

 Age at CMR, years

23.6 ± 12.8

16.3 ± 8.0

< 0.001

 Maximum thoracic duct diameter, mm

2.5 (0.2)

2.8 (0.1)

0.12

 Tortuosity

  

0.35

  None/mild

35 (76%)

84 (68%)

 

  Moderate/severe

11 (24%)

39 (32%)

 
  1. Values are mean ± standard deviation, age-adjusted mean (standard error), or count (%). Given thoracic duct dimension increases mildly with age, the age-adjusted mean is presented. Bold indicates a p-value < 0.05. CMR: Cardiovascular magnetic resonance. FOV: Field of view. PLE: Protein losing enteropathy, NYHA: New York Heart Association