広範囲脳梗塞における減圧開頭術の治療成績

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Extensive cerebral hemispheric infarction is a devastating condition leading to early death in nearly 80% of cases due to the rapid rise of intracranial pressure in spite of maximum medical treatment for brain edema and swelling. Recently, decompressive craniectomy has been reevaluated to prevent the brain herniation caused by extensive hemisphelic cerebral infarction. We studied the surgical results after decompressive craniectomy for extensive cerebral infarction. Between December 1997 and August 2006, 13 consecutive patients (7 males and 6 females aged from 39 to 73 with a mean age of 59 years) with massive cerebral infarction of IC (11 patients) and MCA (2 patients) territory were treated with decompressive craniectomy and dural plasty. Five patients had a left-sided stroke with severe aphasia. The cardioembolic source of stroke was seen in 5 patients. Surgery was performed at the point of neurological deterioration, anisocoria, and effacement of perimesencephalic cistern on CT findings. The mean time between stroke onset and surgery was 39.8 hr and ranged from 13 to 102 hr. GOS on discharge was MD 1, SD 8, VS 1, and D 3 (mortality rate 30.8%). Severe pneumoniae were the causes of death. All survivors underwent cranioplasty and were transferred with the aim of rehabilitation. In this study, we showed that the decompressive craniectomy reduced mortality after extensive cerebral infarction. However, the functional outcome and level of independence are poor. It seems that the early decompressive craniectomy should be aggressively performed for extensive cerebral infarction before neurological deterioration such as worsening of consciousness disturbance or pupil abnormalities. Further investigations will be needed to clarify the surgical indications, timing, and functional outcomes.
2008-03-31

広範囲脳梗塞における減圧開頭術の治療成績

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