Table 1.
The echocardiographic parameters of the two groups at baseline, before, and after CRT.
Figure 1.
An illustration of LVEF, LVEDV, LVESV, Cir12SD, R12SD, L12SD, and MBF between control group and CRT group at 4 weeks after CRT.
The LVEF, LVESV, Cir12SD, R12SD, and MBF were improved in CRT group. LVEF = left ventricular ejection fraction; LVEDV = left ventricular end diastolic volume; LVESV = left ventricular end systolic volume; Cir12SD = standard deviation of the time-to-peak of the transmural regional circumferential strain; R12SD = standard deviation of the time-to-peak of the transmural regional radial strain; L12SD = standard deviation of the time-to-peak of the transmural regional longitudinal strain; MBF = myocardial blood flow.
Figure 2.
An illustration of RT-MCE between the CRT and control groups.
The arrows indicate the ischemic areas. The images in A and B show the improvement of myocardial perfusion before and after bi-ventricular pacing in the CRT group (MBF: 23 dB/S vs. 58 dB/s). The images in C and D show no significant improvement of myocardial perfusion in the ischemic area of the control group (MBF: 19 dB/S vs. 23 dB/s).
Figure 3.
An illustration of LVEF, LVEDV, LVESV, Cir12SD, R12SD, L12SD, and MBF between response group and non-response group.
The MBF was significantly improved in response group. LVEF = left ventricular ejection fraction; LVEDV = left ventricular end diastolic volume; LVESV = left ventricular end systolic volume; Cir12SD = standard deviation of the time-to-peak of the transmural regional circumferential strain; R12SD = standard deviation of the time-to-peak of the transmural regional radial strain; L12SD = standard deviation of the time-to-peak of the transmural regional longitudinal strain; MBF = myocardial blood flow.
Table 2.
The echocardiographic parameters between responders and non-responders.