Table 4 |
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|
Peak velocities and VTI of AR wave and their respiratory variation ratios ( |
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| Patients |
Health subjects |
|||
|
|
|
|||
| Peak velocity (cm/s) |
VTI(mm) |
Peak velocity (cm/s) |
VTI(mm) |
|
|
|
||||
| Inspiration |
18.33 ± 5.29 |
0.0173 ± 0.0103 |
17.40 ± 5.82 |
0.0134 ± 0.0069 |
| Expiration |
23.08 ± 7.78 |
0.0228 ± 0.0119 |
19.23 ± 5.98 |
0.0154 ± 0.0075 |
| Inspiratory variation ratio (%) |
21.71 ± 16.02 |
29.79 ± 22.95 |
9.83 ± 8.81 |
27.83 ± 40.52 |
| Expiratory variation ratio (%) |
29.65 ± 24.91 |
47.21 ± 46.41 |
12.11 ± 12.92 |
34.71 ± 17.12 |
|
The peak values and VTI of AR wave were larger in the patient group than in the control group in expiratory phase (P < 0.05), but there were no differences in inspiratory cycle; the respiratory variation ratios of peak values and the expiratory variation ratios of VTI of AR wave were larger in the patient group than in the control group (P < 0.05), but there were no differences in the inspiratory variation ratios of VTI of AR wave between the two groups (P > 0.05). | ||||
Jia et al. Cardiovascular Ultrasound 2006 4:21 doi:10.1186/1476-7120-4-21 |
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± s).