[Relationship of survival rate, hematoma thickness and midline shift in patients with acute subdural hematomas].
OBJECTIVE
To estimate outcomes of patients with acute subdural hematomas by analysing the hematoma thickness, midline shift and the differences between them.


METHODS
Ninety-five patients with acute subdural hematoma were retrospectively studied by calculating hematoma thickness, midline shift and their difference with a statistical analysis of Kaplan-Meier, Wilcoxon-Mann-Whitney U test.


RESULTS
The hematoma thickness ranged from 5.0 to 40.0 mm and midline shift was from 0 to 35.0 mm. Among these patients, 51% died and 49% survived after surgery. 18 patients (19%) showed good or satisfactory results. Kaplan-Meier analysis proved that the survival for patients with hematoma thickness approximately equal to l7 mm and a midline shift 15 mm or whose midline shift exceeded hematoma thickness by 2.2 mm, the survival rate was 50%. Glasgow outcome scale scores were correlated significantly with these parameters.


CONCLUSIONS
The hematoma thickness, midline shift and their difference provided a database from which criteria could be derived, that is crucial for prognosis estimation.
Wang
Jian-qing
JQ
Department of Neurosurgery, Minhang Hospital, Ruijin Hospital Group, Shanghai 201102, China.
Li
Yun-feng
YF
Bian
Liu-guan
LG
Shen
Jian-kang
JK
Li
Ning
N
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D020199:Hematoma, Subdural, Acute / Q000401:mortality* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D015996:Survival Rate