Introduction
Materials and methods
Patient selection
Data acquisition
Contraction analysis
Statistical analysis
Results
Normal population
Male (n = 40) | Female (n = 40) |
p value | |||
---|---|---|---|---|---|
Range | Mean ± SD | Range | Mean ± SD | ||
EDV (ml) | 72–163 | 108.1 ± 22.4 | 48–134 | 85.9 ± 18.3 | <0.001a
|
ESV (ml) | 17–52 | 32.3 ± 9.2 | 12–70 | 25.5 ± 9.9 | 0.001a
|
LVEF (%) | 63–80 | 70.5 ± 4.3 | 60–80 | 70.2 ± 9.5 | 0.952 |
Motion (mm) | 7.2–12.6 | 9.7 ± 1.3 | 7.3–12.1 | 9.2 ± 1.2 | 0.101 |
Thickening (% counts) | 49–103 | 66.4 ± 11.9 | 38–100 | 64.1 ± 13.6 | 0.436 |
Peak motion (% RR cycle) | 33–53 | 43.2 ± 4.7 | 31–54 | 42.1 ± 5.4 | 0.226 |
SD (% RR cycle) | 1.2–7.5 | 3.3 ± 1.5 | 1.3–7.2 | 3.6 ± 1.4 | 0.876 |
Bandwidth (% RR cycle) | 9–33 | 17.7 ± 5.4 | 9–40 | 18.7 ± 7.1 | 0.484 |
Rest versus post-stress MPS
Adenosine MPS (n = 40) | Exercise MPS (n = 40) | |||||
---|---|---|---|---|---|---|
Rest | Post-stress |
p valuea
| Rest | Post-stress |
p valueb
| |
EDV (ml) | 97.9 ± 25.7 | 99.8 ± 25.2 | 0.263 | 95.9 ± 20.8 | 92.2 ± 22.3 | 0.005c
|
ESV (ml) | 29.2 ± 9.4 | 29.9 ± 12.6 | 0.488 | 27.6 ± 8.5 | 23.8 ± 9.8 | <0.001c
|
LVEF (%) | 70.3 ± 4.4 | 71.0 ± 6.4 | 0.409 | 71.4 ±4.4 | 75.1 ± 6.8 | <0.001c
|
Motion (mm) | 9.5 ± 1.2 | 9.4 ± 1.1 | 0.940 | 9.5 ± 1.3 | 10.2 ± 1.3 | 0.002c
|
Thickening (% counts) | 64.7 ± 13.5 | 63.3 ± 13.6 | 0.569 | 65.8 ± 12.1 | 68.3 ± 12.0 | 0.210 |
Peak motion (% RR cycle) | 43.3 ± 4.8 | 44.1 ± 4.2 | 0.330 | 42.4 ± 5.5 | 44.2 ± 4.8 | 0.070 |
SD (% RR cycle) | 3.7 ± 1.4 | 4.2 ± 1.3 | 0.083 | 3.5 ± 1.5 | 3.8 ± 1.4 | 0.162 |
Bandwidth (% RR cycle) | 19.0 ± 6.7 | 18.5 ± 4.7 | 0.602 | 17.5 ± 6.0 | 18.4 ± 5.7 | 0.352 |
Heart rate (bpm) | 72.3 ± 13.3 | 74.9 ± 12.3 | 0.104 | 67.9 ± 12.2 | 77.4 ± 12.4 | <0.001c
|
Differences between normal and dyssynchrony population
Normal (n = 80) | Heart failure (n = 24) |
p value | |
---|---|---|---|
EDV (ml) | 96.9 ± 23.3 | 283.6 ± 106.7 | <0.001a
|
ESV (ml) | 28.4 ± 9.0 | 207.2 ± 104.3 | <0.001a
|
LVEF (%) | 70.8 ± 4.4 | 30.1 ± 10.9 | <0.001a
|
Motion (mm) | 9.5 ± 1.2 | 2.9 ± 1.3 | <0.001a
|
Thickening (% counts) | 65.4 ± 12.7 | 24.2 ± 8.0 | <0.001a
|
Peak motion (% RR cycle) | 42.8 ± 5.1 | 46.5 ± 5.0 | 0.006a
|
SD (% RR cycle) | 3.5 ± 1.4 | 18.0 ± 5.2 | <0.001a
|
Bandwidth (% RR cycle) | 18.2 ± 6.0 | 92.2 ± 11.1 | <0.001a
|
Heart rate (bpm) | 70.1 ± 12.9 | 67.6 ± 12.1 | 0.414 |