Table 2.
Factors associated with the reduction in midline shift following hemicraniectomy
| Status of SPS following hemicraniectomy |
P | Status of PGS following hemicraniectomy |
P | |||||
|---|---|---|---|---|---|---|---|---|
| Reduction | No change | Progression | Reduction | No change | Progression | |||
| Infarct volume (cm3) | 231.0 (196.0–281.0) | 251.0 (202.5–293.5) | 288.5 (221.5–368.3) | 0.236 | 248.5 (207.8–318.8) | 232.5 (194.5–293.5) | 315.0 (226.0–379.0) | 0.163 |
| Extracranial bulging volume (cm3) | 170.5 (125.4–220.3) | 161.2 (131.0–208.7) | 141.3 (104.4–177.9) | 0.126 | 185.4 (140.0–220.3) | 143.0 (119.1–207.7) | 141.3 (99.4–177.9) | 0.030 |
| Extracranial bulging ratio (cm3/mm) | 1.28 (1.05–1.61) | 1.26 (0.98–1.60) | 1.05 (0.83–1.30) | 0.068 | 1.34 (1.16–1.61) | 1.11 (0.96–1.60) | 1.05 (0.78–1.30) | 0.010 |
| Bone flap size (mm) | 129.8 (121.2–142.4) | 129.8 (122.4–138.3) | 129.2 (123.9–136.0) | 0.944 | 131.1 (122.4–142.5) | 128.6 (122.4–137.8) | 133.3 (121.7–136.0) | 0.620 |
| Skull size (mm) | 148.5 (140.8–159.3) | 151.0 (139.0–159.0) | 145.0 (141.0–152.5) | 0.473 | 149.5 (140.8–161.0) | 148.0 (141.0–159.0) | 143.0 (138.5–152.5) | 0.328 |
| Subgaleal hematoma thickness (mm) | 11.0 (8.7–15.4) | 12.3 (9.5–15.3) | 15.8 (8.1–19.5) | 0.404 | 11.2 (9.3–15.6) | 12.3 (8.8–15.7) | 14.6 (7.8–18.1) | 0.925 |
| Preoperative hyperosmolar therapy | 26 (76.5) | 17 (89.5) | 14 (82.4) | 0.503 | 20 (76.9) | 27 (87.1) | 10 (76.9) | 0.554 |
| Preoperative mechanical ventilation | 10 (29.4) | 7 (36.8) | 3 (17.6) | 0.440 | 5 (19.2) | 11 (35.5) | 4 (30.8) | 0.393 |
Data are given as a number (column percent) or median value (interquartile range).
SPS, septum pellucidum shift; PGS, pineal gland shift; CT, computed tomography.