Awake state | Asleep state | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
−10 mm Hg | −5 mm Hg | −10 mm Hg | −5 mm Hg | |||||||||
Duration of ICP elevations | Management groups | N (%) | Median (range) | N (%) | Median (range) | N (%) | Median (range) | N (%) | Median (range) | |||
Numbers of ICP reductions during a standardised recording time of 10 hours presented as median numbers with ranges in parentheses. *p < 0.05 (Mann–Whitney test). No ICP reductions in group 3. ICP, intracranial pressure. Group 1, “normal” mean ICP; group 2, “low” mean ICP; group 3, “high” mean ICP. | ||||||||||||
0.5 min | Group 1 | 10 (22) | 11 (1 to 257) | 21 (46) | 47 (1 to 508) | 1 | 1 (1 to 1) | 9 (20) | 2 (1 to 19) | |||
Group 2 | 6 (43) | 63 (10 to 803) | 10 (71) | 252 (17 to 826)* | 2 (14) | 3 (2 to 4) | 5 (36) | 4 (1 to 319) | ||||
1 min | Group 1 | 7 (15) | 8 (1 to 149) | 15 (33) | 96 (1 to 284) | – | – | 6 (13) | 3 (1 to 11) | |||
Group 2 | 6 (43) | 32 (4 to 509) | 9 (64) | 150 (39 to 512) | 2 (14) | 3 (3 to 3) | 3 (21) | 21 (2 to 198) | ||||
5 min | Group 1 | 3 | 14 (13 to 50) | 11 (24) | 27 (4 to 87) | – | – | – | – | |||
Group 2 | 5 (36) | 3 (1 to 137) | 9 (64) | 30 (3 to 137) | – | – | 2 (14) | 33 (4 to 61) |