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Table 2 Global LV mechanics of dogs (n = 7) with tachycardia induced cardiomyopathy (TIC) at baseline and during cardiomyopathy

From: Left ventricular strain distribution in healthy dogs and in dogs with tachycardia-induced dilated cardiomyopathy

 

Baseline

TIC

p value

Heart rate (bpm)

124 ± 25

159 ± 25

0.009

LV end-diastolic volume

56 ± 3

83 ± 12

<0.001

LV end-systolic volume

22 ± 5

66 ± 9

<0.001

LVEF (%)

60 ± 9

21 ± 5

<0.001

Global longitudinal strain (%)

-19 ± 5

-9 ± 5

<0.001

Global circumferential strain (%)

-17 ± 7

-7 ± 5

<0.001

Global radial strain (%)

41 ± 19

16 ± 14

<0.001

Rotation (degree)

   

Base

-3.0 ± 1.4

-2.1 ± 1.7

0.21

Mid

1.9 ± 1.2

-1.7 ± 1.2

0.002

Apex

4.3 ± 0.9

1.2 ± 0.6

<0.001

Peak twist (degree)

8.9 ± 5.7

2.4 ± 2.1

0.03

Positive peak twisting rate (degree/sec)

115 ± 67

58 ± 22

0.11

Negative peak twisting rate (degree/sec)

-145 ± 69

-62 ± 35

0.04