Table 3.
Comparison of blood pressure variability parameters of preterm infants with and without IVH.
| Non-IVH (n = 43) |
IVH (n = 49) |
t | P-value | |
|---|---|---|---|---|
| SBP (mmHg) | 56.35 ± 4.68 | 55.78 ± 6.01 | 0.505 | 0.615 |
| DBP (mmHg) | 28.86 ± 4.71 | 26.67 ± 5.38 | 2.061 | 0.042 |
| MABP (mmHg) | 37.09 ± 4.52 | 34.71 ± 5.75 | 2.185 | 0.032 |
| SBP max-min | 21.67 ± 7.32 | 24.86 ± 6.92 | 2.142 | 0.035 |
| SD | 5.42 ± 1.59 | 6.22 ± 1.68 | 2.335 | 0.022 |
| CV (%) | 9.98 ± 3.05 | 11.39 ± 3.59 | 2.015 | 0.045 |
| SV | 8.17 ± 1.25 | 8.34 ± 1.37 | 0.609 | 0.544 |
| DBP max-min | 21.74 ± 7.76 | 26.43 ± 5.46 | 3.306 | 0.001 |
| SD | 5.61 ± 1.76 | 6.70 ± 1.31 | 3.310 | 0.001 |
| CV (%) | 20.22 ± 8.28 | 26.06 ± 7.15 | 3.626 | <0.001 |
| SV | 7.49 ± 1.17 | 7.71 ± 1.47 | 0.810 | 0.420 |
SBP, systolic blood pressure; DBP, diastolic blood pressure; MABP, mean arterial blood pressure; max, maximum; min, minimum; SD, standard deviation; CV, coefficient of variation; SV, successive variation; IVH, intraventricular hemorrhage.