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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