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Table 1 Geometric ovine MRI data at baseline and 8 weeks post myocardial infarction (systolic and diastolic)

From: Left atrial geometry in an ovine ischemic mitral regurgitation model: implications for transcatheter mitral valve replacement devices with a left atrial anchoring mechanism

Variablea

Systolic

Diastolic

Baseline

8 weeks post-MI

P value

Baseline

8 weeks post-MI

P value

Let atrial inner diameter (LAID), mm

55.9 ± 6.9

53.8 ± 4.8

0.580

44.7 ± 3.5

47.0 ± 6.6

0.566

Left atrial length (LAL), mm

33.2 ± 4.0

33.7 ± 2.8

0.847

26.6 ± 3.6

31.0 ± 2.3

0.091

Annulus plane to LAID, mm

18.5 ± 2.7

19.5 ± 1.9

0.381

 − 

 − 

 − 

Left atrial roof contour, mm

61.4 ± 5.0

62.2 ± 2.3

0.754

46.7 ± 6.7

52.8 ± 5.6

0.165

Mitral valve height, mm

4.6 ± 0.9

4.6 ± 1.0

0.961

 − 

 − 

 − 

Left atrial roof to myocardium, mm

77.7 ± 4.5

80.8 ± 5.0

0.276

92.1 ± 4.2

88.5 ± 5.0

0.201

Left atrial roof to papillary muscle base, mm

55.8 ± 4.6

58.0 ± 2.9

0.423

49.9 ± 5.3

56.8 ± 3.1

0.057

Interpapillary muscle distance, mm

16.8 ± 4.5

28.5 ± 6.1

 < 0.001

29.3 ± 4.8

36.9 ± 3.7

0.004

  1. LAID = left atrial inner diameter; LAL = left atrial length; MI = myocardial infarction; MRI = magnetic resonance imaging
  2. aData are presented as mean ± SD