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Table 3 CMR and clinical variables correlated to the need of pharmacological therapy

From: Predictive value of Cardiac Magnetic Resonance: new and old parameters in the natural history of repaired Tetralogy of Fallot

Variable

No outcome (N = 93)

Outcome (N = 37)

All patients (N = 130)

p

VO2max (ml/kg/min), N = 71

29.0

(27.1–34.1)

23.9

(17.3–31.1)

28.0

(23.9–32.5)

0.002

VO2max pre-homograft (ml/kg/min), N = 38

29.5

(24.0 -32.4)

20.2

(15.4–22.2)

27.0

(20.8–31.0)

0.006

Body mass index (kg/m2)

22.1

(20.3–24.2)

24.2

(22.6–26.2)

22.6

(20.7–25.0)

0.005

Weight (kg)

60.0

(55.0–70.0)

68.0

(60.0–78.0)

64.0

(55.0–73.0)

0.041

LV mass/volume (g/ml)

0.6

(0.5–0.6)

0.6

(0.5–0.7)

0.6

(0.5–0.7)

0.025

RA transverse diameter (cm)

4.7

(4.2–5.2)

5.5

(4.7–6.7)

4.9

(4.3–5.5)

< 0.001

RA longitudinal diameter (cm)

4.9

(4.2–5.3)

5.7

(5.0 -6.9)

5.0

(4.4–5.6)

< 0.001

RA area (cm2)

19.0

(16.0–23.0)

27.0

(22.0–36.0)

20.0

(16.0–25.0)

< 0.001

IVS LGE (cm)

0.0

(0.0–0.0)

0.0

(0.0 -2.2)

0.0

(0.0 -1.5)

0.009

RVOT aneurysm coronal diameter (mm), N = 32

34.0

(32.0–36.0)

43.0

(38.0–54.0)

35.5

(33.5–42.5)

0.003

Age at first CMR (years)

19.9

(17.6–25.1)

43.9

(34.9–50.6)

22.1

(18.0 -36.7)

< 0.001

Age at TOF repair (months), N = 127

14.7

(7.6–34.5)

93.6

(36.5 -170.2)

23.1

(9.5–67.7)

< 0.001

Time from repair to CMR (years), N = 127

17.9

(16.7–21.5)

32.6

(21.0 -41.2)

19.1

(16.8–28.5)

< 0.001

Type of TOF repair

      

0.048

 Transannular patch

62

(66.7%)

18

(48.6%)

80

(61.5%)

 

 Infundibular patch

25

(26.9%)

10

(27.0%)

35

(26.9%)

 

 Double revision of repair

3

(3.2%)

3

(8.1%)

6

(4.6%)

 

 Other

1

(1.1%)

1

(2.7%)

2

(1.5%)

 

 Unknown

2

(2.2%)

5

(13.5%)

7

(5.4%)

 

IVS LGE

      

0.018

 No

72

(77.4%)

21

(56.8%)

93

(71.5%)

 

 Yes

21

(22.6%)

16

(43.2%)

37

(28.5%)

 

RPA, N = 129

      

0.044

 Normal anatomy

64

(69.6%)

18

(48.6%)

82

(63.6%)

 

 Stenosis

11

(12.0%)

4

(10.8%)

15

(11.6%)

 

 Hypoplasia

3

(3.3%)

1

(2.7%)

4

(3.1%)

 

 Dilation

14

(15.2%)

14

(37.8%)

28

(21.7%)

 

MPA bifurcation geometry

      

0.007

 Normal

80

(86.0%)

24

(64.9%)

104

(80.0%)

 

 Angled

13

(14.0%)

13

(35.1%)

26

(20.0%)

 

Sinus rhythm

      

0.001

 No

0

(0.0%)

4

(10.8%)

4

(3.1%)

 

 Yes

93

(100.0%)

33

(89.2%)

126

(96.9%)

 

NYHA class, N = 129

      

0.012

 1

84

(90.3%)

25

(69.4%)

109

(84.5%)

 

 2

8

(8.6%)

7

(19.4%)

15

(11.6%)

 

 3

1

(1.1%)

3

(8.3%)

4

(3.1%)

 

 4

0

(0.0%)

1

(2.8%)

1

(0.8%)

 

Number of stenotic/hypoplastic/dilated PA, N = 129

      

0.021

 0

35

(38.0%)

7

(18.9%)

42

(32.6%)

 

 1

34

(37.0%)

12

(32.4%)

46

(35.7%)

 

 2

23

(25.0%)

18

(48.6%)

41

(31.8%)

 
  1. LV = left ventricle; RA = right atrium; IVS = interventricular septum; LGE = late Gadolinium enhancement; RVOT = right ventricular outflow tract; CMR = cardiac magnetic resonance; TOF = Tetralogy of Fallot; RPA = right pulmonary artery; MPA = main pulmonary artery; NYHA = New York Heart Association; PA = pulmonary artery (arteries)