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Table 2 Comparison of conventional echocardiographic values in the control and hypertrophic cardiomyopathy groups

From: Assessment of left atrial function in feline hypertrophic cardiomyopathy by using two- dimensional speckle tracking echocardiography

Variable

Control (N = 20)

HCM (N = 17)

p-value

Size and structure

 IVSd(mm)

4.24 ± 0.89

7.12 ± 1.14

< 0.001*

 LVIDd(mm)

14.31 ± 1.65

12.38 ± 3.03

0.027*

 LVPWd(mm)

3.5 ± 0.59

5.56 ± 1.64

< 0.001*

 IVSs(mm)

7.18 ± 1.40

8.63 ± 1.86

0.01*

 LVIDs(mm)

6.35 ± 1.63

6.06 ± 2.38

0.669

 LVPWs(mm)

7.01 ± 0.92

8.24 ± 1.94

0.026*

 LA (mm)

12.22 ± 1.42

15.55 ± 2.81

< 0.001*

 Ao (mm)

8.66 ± 1.3

8.3 ± 1.73

0.476

 LA:Ao

1.44 ± 0.28

1.92 ± 0.44

< 0.001*

LV function

 FS%

55.58 ± 10.22

51.38 ± 10.79

0.233

 E (m/s)

0.83 ± 0.19

0.62 ± 0.18

0.002*

 A (m/s)

0.61 ± 0.12

0.53 ± 0.29

0.346

 E:A

1.34 ± 0.31

1.46 ± 0.74

0.09

 IVRT (m/s)

45.7 ± 6.64

47.4 ± 9.12

0.504

 S (cm/s)

0.46 ± 0.09

0.31 ± 0.13

0.001*

 D (cm/s)

0.35 ± 0.06

0.26 ± 0.12

0.006*

 AR (cm/s)

0.14 ± 0.03

0.16 ± 0.05

0.367

 S:D ratio

1.25 ± 0.2

1.2 ± 0.22

0.464

 E′ (m/s)

0.11 ± 0.03

0.08 ± 0.04

0.056

 A′ (m/s)

0.08 ± 0.03

0.07 ± 0.04

0.54

 S′ (m/s)

0.07 ± 0.02

0.07 ± 0.03

0.625

 E′:A′ ratio

1.33 ± 0.31

1.15 ± 0.39

0.16

 E:E′ ratio

7.8 ± 2.92

9.7 ± 6.8

0.265

LA function

 LA-FS (%)

27.27 ± 6.94

14.95 ± 8.23

< 0.001*

 LA-EF (%)

69.10 ± 13.64

46.09 ± 21.48

0.001*

 FAC (%)

63.73 ± 11.30

35.54 ± 18.07

< 0.001*

  1. A peak velocity of early diastolic transmitral flow, A′ peak velocity of diastolic mitral annular motion as determined by pulsed wave Doppler, Ao Aorta, AR peak velocity of pulmonary vein flow reversal at atrial contraction, D peak velocity of diastolic pulmonary vein flow, E peak velocity of early diastolic transmitral flow, E′ peak velocity of early diastolic mitral annular motion as determined by pulsed wave Doppler, E:A ratio of E to A, E′A′ ratio of E′ to A′, E:E′ ratio of E to E′, FAC left atrial fractional area change, FS left ventricular fractional shortening, HCM hypertrophic cardiomyopathy, IVRT isovolumic (or isovolumetric) relaxation time, IVSd interventricular septum thickness at end-diastole, IVSs interventricular septum thickness at end-systole, LA left atrium, LA:Ao left atrial and aorta ratio, LA-EF left atrial ejection fraction, LA-FS left atrial fractional shortening, LVIDd left ventricular internal dimension at end -diastole, LVIDs left ventricular internal dimension at end -systole, LVPWd left ventricular posterior wall thickness at end-diastole, LVPWs left ventricular posterior wall thickness at end-systole, S peak velocity of systolic pulmonary vein, S′ peak velocity of systolic mitral annular motion as determined by pulsed wave Doppler, S:D ratio of S to D
  2. Data are expressed as mean ± standard deviation
  3. * indicate statistical significance at p < 0.05 assessed by the independent student t-test