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Table 2 Cardiac structure and functions in the 5 subgroups of subjects

From: Layer-specific strain in patients with heart failure using cardiovascular magnetic resonance: not all layers are the same

 

Healthy controls (n = 70)

At risk for heart failure (n = 126)

HFpEF (n = 87)

p-value 1

HFmrEF (n = 88)

HFrEF (n = 58)

p-value 2

Preserved ejection fraction

       

 LVEF (%)

63 (61,67)†

66 (62,70)*

63 (59,68)

0.008

48 (44,52) ¶

32 (25,38)¶§

 < 0.001

 LVEDVI (ml/m2)

74 (68,83)

75 (65,87)

76 (68,86)

0.73

100 (81,114)¶

134 (100,165)¶§

 < 0.001

 LVESVI (ml/m2)

27 (23,31)

25 (21,31)

28 (22,33)

0.16

51 (40,62)¶

90 (64,121)¶§

 < 0.001

 LVM index, (g/m2)

55 (49,61)*†

61 (51,71)*

66 (56,79)

 < 0.001

76 (63,88)¶

91 (74,110)¶§

 < 0.001

 LVM/LVEDV

0.72 (0.66,0.79)*†

0.80 (0.70,0.91)*

0.85 (0.73,0.98)

 < 0.001

0.79 (0.66,0.88)¶

0.67 (0.60,0.76)¶§

 < 0.001

 RWT

0.31 (0.27,0.34) *

0.32 (0.28,0.37)*

0.34 (0.29,0.40)

0.019

0.32 (0.27,0.37)¶

0.28 (0.24,0.32)¶§

 < 0.001

 RVEF

58 (55,64)†

62 (57,67) *

60 (52,64)

0.021

52 (46,58)¶

49 (41,56)¶§

 < 0.001

 RVEDVI, (ml/m2)

74 (63,83)

75 (61,88)

71 (63,91)

0.74

81 (67,97)¶

79 (68,108)¶

0.070

 RVESVI, (ml/m2)

30 (23,35)

28 (22,35)

31 (24,39)

0.27

38 (28,48)¶

39 (31,57)¶

 < 0.001

 GLS_EPI (%)

 − 16.5 ± 2.4*†

 − 15.5 ± 2.7*

 − 14.1 ± 3.0

 < 0.001

 − 11.6 ± 2.1¶

 − 8.2 ± 2.2¶§

 < 0.001

 GLS_AVE (%

 − 19.6 ± 2.5*

 − 19.2 ± 3.1*

 − 17.9 ± 3.3

 < 0.001

 − 14.0 ± 2.3¶

 − 9.4 ± 2.7¶§

 < 0.001

 GLS_ENDO (%)

 − 21.1 ± 2.6

 − 21.2 ± 3.4

 − 20.1 ± 3.7

0.050

 − 15.3 ± 2.9¶

 − 10.0 ± 3.2¶§

 < 0.001

 GLS_ENDO/GLS_EPI

1.3 (1.2,1.4)*†

1.4 (1.3,1.5)*

1.4 (1.3,1.5)

 < 0.001

1.3 (1.2,1.4)¶

1.2 (1.2,1.3)¶§

 < 0.001

 Absolute GLS layer difference, (%)

 − 4.7 (− 5.8, − 3.3)*†

 − 5.7 (− 7.4, − 4.1)

 − 5.6 (− 7.5, − 4.3)

 < 0.001

 − 3.5 (− 5.1, − 2.3)¶§

 − 2.1 (− 2.7, − 1.0)¶§

 < 0.001

 Relative GLS layer difference (%)

21.9 (16.5,27.0)*†

27.3 (20.4,32.5)*

28.9 (23.4,34.4)

 < 0.001

25.4 (16.1,29.9)¶§

17.9 (13.4,25.8)¶§

 < 0.001

 GCS_EPI (%)

 − 11.1 ± 2.8

 − 10.2 ± 2.5

 − 10.2 ± 3.4

0.072

 − 7.8 ± 2.4¶

 − 5.7 ± 2.2¶§

 < 0.001

 GCS_AVE (%)

 − 19.9 ± 3.4

 − 19.9 ± 3.3

 − 19.3 ± 4.0

0.40

 − 13.9 ± 3.1¶

 − 9.3 ± 3.1¶§

 < 0.001

 GCS_ENDO (%)

 − 29.9 ± 4.7

 − 31.1 ± 5.3

 − 29.9 ± 6.1

0.17

 − 21.1 ± 4.9¶

 − 13.1 ± 4.6¶§

 < 0.001

 GCS_ENDO/GCS_EPI

2.6 (2.4,3.1)*†

3.0 (2.6,3.6)

2.9 (2.4,4.0)

0.004

2.6 (2.3,3.3)¶

2.3 (1.9,2.9)¶§

 < 0.001

 Absolute GCS layer difference (%)

 − 18.8 (− 21.1, − 16.3)†

 − 20.8 (− 24.3, − 17.8)*

 − 19.0 (− 23.1, − 16.1)

0.002

 − 13.0 (− 16.2, − 9.8)¶

 − 7.5 (− 8.7, − 5.1)¶§

 < 0.001

 Relative GCS layer difference (%)

61.8 (58.4,67.5) *†

67.0 (62.1,72.1)

65.4 (57.8,74.8)

0.004

62.0 (57.1,69.2)¶

56.8 (47.4,64.9)¶§

 < 0.001

 GRS_LAx (%)

48.9 ± 10.7*

47.5 ± 12.8*

41.1 ± 13.8

 < 0.001

28.5 ± 9.4¶

18.7 ± 7.7¶§

 < 0.001

 GRS_SAx (%)

46.7 ± 12.4*

46.3 ± 15.1*

38.6 ± 16.7

 < 0.001

27.0 ± 9.0¶

17.7 ± 8.1¶§

 < 0.001

  1. HFpEF heart failure with preserved ejection fraction; HFmrEF heart failure with midrange ejection fraction; HFrEF heart failure with reduced ejection fraction; LVEF left ventricular ejection fraction; LVEDVI left (right) ventricular end-diastolic volume indexed to ideal body surface area; LVESVI left (right) ventricular end-systolic volume indexed to ideal body surface area; LVM left ventricular mass; RVEF right ventricular ejection fraction, RVEDVI right ventricular end-diastolic volume index; RVESVI right ventricular end-systolic volume index, RWT relative wall thickness; GLS_EPI epicardial global longitudinal strain; GLS_AVE average global longitudinal strain; GLS_ENDO endocardial global longitudinal strain; GCS_EPI picardial global circumferential strain; GCS_AVE average global circumferential strain; GCS_ENDO endocardial global circumferential strain; GRS global radial strain; LAx long axis; SAx short axis
  2. Absolute strain layer difference = endocardial strain—epicardial strain; relative strain layer difference = (endocardial strain—epicardial strain)/endocardial strain
  3. p-values 1 were derived from comparison among the three subgroups with preserved ejection fraction and p-value 2 for the three subgroups of patients with heart failure
  4. *Significantly different from HFpEF in comparison among three subgroups with preserved LVEF
  5. †Significantly different from patients at risk for heart failure in comparison among three subgroups with preserved LVEF
  6. ¶Significantly different from HFpEF in comparison among three subgroups with heart failure
  7. §Significantly different from HFmrEF in comparison among three subgroups with heart failure
  8. Continuous variables were expressed as mean ± standard deviation or median (25th, 75th percentile), as appropriate