Table 2 Absolute volumes under normocapnia and hypercapnia
Volumes at NC (mL) | Volumes at HC (mL) | ΔVolume (mL) | p value | |
|---|---|---|---|---|
Intracranial volume | 1508 (1493, 1587) | 1507 (1495, 1581) | -3.0 (-1.5, -6.5) | 0.271 |
BPV | 1234 (1162, 1305) | 1243 (1167, 1311) | 6.0 (4.5, 8.5) | 0.016 |
Grey matter | 707 (653, 745) | 714 (654, 740) | 2.0 (-0.5, 5.0) | 0.498 |
White matter | 528 (524, 548) | 535 (527, 554) | 4.0 (2.5, 7.0) | 0.022 |
Total CSF | 295 (279, 318) | 285 (267, 312) | -10.0 (-13.5, -6.5) | 0.034 |
Ventricular CSF | 17.6 (15.1, 22.3) | 17.3 (14.8, 22.0) | -0.4 (-0.3, -0.5) | 0.016 |