Skip to main content

Table 4 Echocardiographic systolic and diastolic parameters using Doppler of each group

From: Assessment of left ventricular regional function in affected and carrier dogs with duchenne muscular dystrophy using speckle tracking echocardiography

Index Unit Normal dogs Carrier dogs Affected dogs
Systolic time intervals PEP/ET   0.21 ± 0.037 0.21 ± 0.046 0.22 ± 0.085
Transmitral flow E wave cm/sec 74.71 ± 13.42 87.42 ± 10.89† 66.44 ± 10.19
  A wave cm/sec 45.79 ± 14.68 45.71 ± 8.09 44.61 ± 8.98
  E/A   1.82 ± 0.71 1.98 ± 0.44 1.58 ± 0.52
  DcT msec 92.29 ± 8.20 91.54 ± 14.44 91.06 ± 14.73
Isovolumic relaxation time msec 32.13 ± 11.49 28.21 ± 10.07 39.28 ± 13.61
Mitral annular velocity S' wave cm/sec 10.67 ± 1.60 12.17 ± 5.94 7.39 ± 1.25
  E' wave cm/sec 12.13 ± 2.62 11.33 ± 2.12 8.67 ± 1.65†
  E/E'   6.39 ± 1.57 7.89 ± 1.41 8.48 ± 2.17
  1. †: Significant difference compared with normal dogs by multiple comparison (P < 0.05).
  2. PEP = Pre-ejection period; ET = Left ventricular ejection time; E = Peak velocity of early diastolic flow in transmitral flow; A = Peak velocity of late diastolic flow in transmitral flow; DcT = Deceleration time of early diastolic flow; S'= Peak mitral annular velocity during systole; E'= Peak mitral annular velocity during early diastole.