Lower preoperative GCS score is an independent risk factor for prognosis of contralateral AEDH after ASDH. Postoperative management should include assessment of AEDH in patients treated for contralateral skull fractures and who experienced intraoperative acute brain swelling. We recommend early decompression with a burr-hole craniotomy, immediately followed by a decompressive craniectomy. This strategy provides gradual decompression, while advancing the initial surgical time and preventing the suddle decreased tamponade effect. As such, it may help decrease the risk of contralateral AEDH associated with decompression.
Objective: This study was performed to better understandpostoperative contralateral subdural effusion, an uncommon but serious complication secondary to decompressive craniectomy in patients with head trauma. Subjects and Methods: Data from medical records of 169 patients who underwent decompressive craniectomy after head trauma between 2003 and 2006 were collected. The data included demographics, clinical presentations, treatment and outcome. Results: Of the 169 patients, 11 (6.5%) had contralateral subdural effusion. On the average, this complication was found 14 days after decompressive craniectomy. Of the 11 patients, conservative treatment was effective in 7 with a gradual resolution which lasted 52.7 days on average. The effusion in the remaining 4 patients led to progressive deterioration of clinical presentation, and surgical intervention was necessary: subduroperitoneal shunting in 3 cases and burr hole drainage in the remaining 1 case. Conclusions: Our findings confirmed that postoperative contralateral subdural effusion was not an uncommon complication secondary to decompressive craniectomy. Most contralateral subdural effusions resolved spontaneously after conservative management, but surgical management may be necessary if the patients develop deteriorating clinical manifestations or the subdural effusion has an apparent mass effect.
Because most of the patients developing ASDH underwent emergent surgical intervention, the incidence of this phenomenon may be underestimated. Although emergent surgical removal remains the first choice for the treatment of ASDH, conservative management with careful monitoring may also work out in selected patients who show neurologic and radiologic improvements.
This method is easy and safe and it facilitates the cranioplasty, reducing the potential complications, including intracranial haematoma, effusions and infection, and thereby improving the patient outcome.
Although the effect was not definitively established, many patients in the sub-group of PTH patients described here would benefit from shunt placement, especially when they simultaneously have large cranial defects after surgical decompression and underwent cranioplasties after shunt placement. Additionally, younger patients and those with less severe hydrocephalus before shunt placement may expect a better outcome after shunt placement.
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