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Seizures after decompressive hemicraniectomy for ischaemic stroke
C J Creutzfeldt1, D L Tirschwell1, L J Kim1
1Department of Neurology and Neurosurgery, University of Washington, Seattle, Washington, USA.
Objective:
The risk of seizures after malignant middle cerebral artery (MCA) infarction with decompressive hemicraniectomy (DHC) is uncertain. Also unknown is how this complication influences survivors' recovery and quality of life.
Methods:
We retrospectively reviewed medical charts of all patients admitted to Harborview Medical Center between 1 January 2002 and 31 June 2011 for space-occupying MCA ischaemic stroke and who underwent DHC. Survivors and their surrogates were invited to participate in a telephone or in-person interview.
Results:
Fifty-five patients were followed for a median of 311 days (IQR 134-727). Twenty-seven patients (49%) had seizures, 25 (45%) developed epilepsy and 21 (38%) achieved moderate disability or better (modified Rankin Scale score ≤3) by 1 year after stroke onset. The only factor significantly associated with seizure occurrence was male gender. Median time from stroke to first seizure was 222 days, with a cluster of first seizures within weeks after cranioplasty; only two of the first seizures occurred right around the time of stroke onset. Follow-up time was significantly longer for patients with seizures (605 days, IQR 297-882) than for those without (221 days, IQR 104-335). Of the 20 patients interviewed, 12 achieved moderate disability or better, 15 experienced a seizure with 6 indicating the seizure was a major drawback. Regardless, all 20 would have chosen DHC again.
Conclusions:
In this case series, patients were at high risk of developing seizures after malignant MCA stroke with DHC, especially after cranioplasty. Assuming these findings are replicated, means should be sought to reduce the occurrence of this complication.
Insights
Patients undergoing decompressive hemicraniectomy for malignant middle cerebral artery infarction face a high risk of seizures, particularly after cranioplasty. Further research is needed to mitigate this complication.
Area of Science:
- Neurology
- Neurosurgery
- Stroke Medicine
Background:
- Malignant middle cerebral artery (MCA) infarction is a severe condition often requiring decompressive hemicraniectomy (DHC).
- The risk of post-stroke seizures and their impact on recovery after DHC for MCA infarction remain unclear.
Purpose of the Study:
- To investigate the incidence of seizures following DHC for malignant MCA infarction.
- To assess the influence of seizures on the recovery and quality of life in stroke survivors.
Main Methods:
- Retrospective review of medical charts for patients with space-occupying MCA ischemic stroke who underwent DHC.
- Follow-up interviews with survivors and their surrogates to gather data on seizures and functional outcomes.
Main Results:
- 49% of patients (27/55) experienced seizures, and 45% (25/55) developed epilepsy.
- Male gender was the only significant predictor of seizure occurrence.
- Seizures often occurred weeks after cranioplasty, and longer follow-up was observed in patients with seizures.
Conclusions:
- High risk of seizures exists after DHC for malignant MCA stroke, with a notable incidence post-cranioplasty.
- Strategies to reduce seizure occurrence in this patient population should be explored.
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