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Frequency of non convulsive status epilepticus in patients with impaired level of consciousness
Maimoona Siddiqui1, Nazish Jamil, Abdul Malik
1Department of Clinical Neurophysiology & Neurology, Liaquat National Hospital, Institute of Postgraduate Medical Studies, Karachi, Pakistan.
Objective:
To determine the frequency of Non Convulsive Status Epilepticus in patients admitted with impaired consciousness.
Methods:
All EEG's in patients with impaired level of consciousness over four years from 2002- 2006 were reviewed. All EEG's showing continuous epileptiform discharges were included. Findings of all these EEG's were divided into five groups; generalized spikes and wave, generalized sharp and wave, focal spike and wave, focal sharp and wave and periodic lateralized epileptiform discharges.
Results:
There were 785 EEG's recorded in patients with impaired level of consciousness. Only 12 (1.5%) patients were identified with NCSE on EEG. The commonest EEG findings in our patients with NCSE were: Continuous focal spike and wave seen in 4(33%), Continuous generalized spike and wave 3 (25%), Continuous generalized sharp and wave 3 (25%), Continuous focal sharp and wave 1 (8.3) and Continuous periodic lateralized epileptiform discharges (PLEDs) in 1 (8.3%) patient.
Conclusion:
NCSE is an important treatable entity which can be easily recognized by doing an EEG.
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