|
Interventricular electromechanical delay (IMD)
|
Interventricular electromechanical delay between pulmonary and aortic outflow. Measured as the time between the onset of the QRS to onset of aortic flow vs. QRS to onset of pulmonary flow
|
≥ 40 ms
|
6
|
1
|
|
Septal-to-posterior wall motion delay (SPWMD)
|
M-mode: the interval between the maximum contraction of the septum and the maximum contraction of the left ventricular posterior wall
|
≥ 130 ms
|
14, 15
|
2
|
|
Ts-12
|
Maximum difference in Ts between any 2 of 12 LV segments
|
≥ 104 ms
|
16
|
3
|
|
Ts-12-SD
|
Standard deviation of the time to peak myocardial velocity (Ts) of the 12 LV segments
|
≥ 34.4 ms
|
16
|
4
|
|
Septal-to-lateral delay in peak systolic velocity (TDId)
|
Delay between the basal septal and basal lateral Ts, assessed with color-coded TDI
|
≥ 60 ms
|
17
|
5
|
|
LVEMD
|
aortic pre-ejection delay measured as the time between the onset of the QRS to beginning aortic flow
|
> 140 ms
|
6
|
6
|
|
Delayed longitudinal contraction (DLC)
|
Number of LV segments with DLC assessed by tissue tracking in the apical 4-chamber, 2-chamber and long-axis view
|
≥ 2
|
18
|
7
|
