BACKGROUND:
Early decompressive
hemicraniectomy reduces mortality without increasing the risk of very
severe disability among patients 60 years of age or younger with
complete or subtotal space-occupying middle-cerebral-artery
infarction. Its benefit in older patients is uncertain.
METHODS:
We randomly assigned
112 patients 61 years of age or older (median, 70 years; range, 61 to
82) with malignant middle-cerebral-artery infarction to either
conservative treatment in the intensive care unit (the control group)
or hemicraniectomy (the hemicraniectomy group); assignments were made
within 48 hours after the onset of symptoms. The primary end point
was survival without severe disability (defined by a score of 0 to 4
on the modified Rankin scale, which ranges from 0 [no symptoms] to 6
[death]) 6 months after randomization.
RESULTS:
Hemicraniectomy
improved the primary outcome; the proportion of patients who survived
without severe disability was 38% in the hemicraniectomy group, as
compared with 18% in the control group (odds ratio, 2.91; 95%
confidence interval, 1.06 to 7.49; P=0.04). This difference resulted
from lower mortality in the surgery group (33% vs. 70%). No patients
had a modified Rankin scale score of 0 to 2 (survival with no
disability or slight disability); 7% of patients in the surgery group
and 3% of patients in the control group had a score of 3 (moderate
disability); 32% and 15%, respectively, had a score of 4 (moderately
severe disability [requirement for assistance with most bodily
needs]); and 28% and 13%, respectively, had a score of 5 (severe
disability). Infections were more frequent in the hemicraniectomy
group, and herniation was more frequent in the control group.
CONCLUSIONS:
Hemicraniectomy
increased survival without severe disability among patients 61 years
of age or older with a malignant middle-cerebral-artery infarction.
The majority of survivors required assistance with most bodily needs.