Methods A total of 72 severe craniocerebral trauma patients were divided into the severe group (Glasgow coma scale 6~8, 40 cases) and most severe group (Glasgow coma scale 3~5, 32 cases). Meanwhile, patients were divded into the survival group (51 cases) and death group (21 cases) according to the prognosis. The double antibody sandwich enzyme immunoassay was used to detect jugular vein bulb serum CK-BB, UCH-L1 changes on 12 h, 24 h, 48 h, 3 d, 5 d, and 7 d after injury in all patients. At the same time point, the CEO2 was calculated by blood gas analysis with jugular bulb and radial arterial. The levels of CK-BB, UCH-L1 and CEO2 between the different severity and different prognosis groups were compared.
Results The levels of CK-BB [(3.3 ± 1.0), (5.9 ± 1.9), (5.4 ± 1.7), (3.8 ± 1.2), (2.6 ± 0.9), (1.8 ± 0.5) U/L], UCH-L1 [(6.7 ± 2.1), (8.9 ± 2.6), (9.6 ± 2.8), (7.1 ± 2.3), (3.9 ± 1.3), (3.2 ± 1.0) U/L] and CEO2 [(32 ± 6)%, (30 ± 6)%, (22 ± 6)%, (22 ± 5)%, (23 ± 5)%, (24 ± 5)%] all showed significant differences at each point time (F = 157.46, 196.53, 243.62, all P < 0.001). Compared with 12 h after injury, the CK-BB, UCH-L1 and CEO2 in the severe group were higher on 24, 48 h after injury, and were lower on 5, 7 d after injury (all P < 0.05). And in the most severe group, the levels of CK-BB increased markedly on 24 h, 48 h, 3 d, decreased on 5, 7 d after injury (all P < 0.05), the levels of UCH-L1 also increased on 24, 48 h, decreased on 5, 7 d after injury (all P < 0.05), the CEO2 obviously reduced on 48 h, 3 d, 5 d, 7 d after injury (all P < 0.05) as compare with 12 h after injury. The levels of CK-BB, UCH-L1 and CEO2 in the most severe group all were higher than those in the severe group at each point time (all P < 0.05). Meanwhile, compared with 12 h after injury, the levels of CK-BB and UCH-L1 on 24, 48 h were higher, and lower on 5, 7 d, and the CEO2 on 24 h, 48 h, 3 d, 5 d were also lower in the survival group (all P < 0.05). And in the death group, the CK-BB on 24 h, 48 h, 3 d, 5 d, the UCH-L1 and CEO2 on 24 h, 48 h, 3 d, 5 d, 7 d all showed significant differences as compared with 12 h after injury (all P < 0.05). At the same time, the CK-BB and UCH-L1 were lower, the CEO2 were higher in the survival group than those in the death group (all P < 0.05).