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Biomedical subjects

T Bacia

Publications and source records attributed to T Bacia.

At least 73 records · Page 4Linked to original sources
PubMedDate not supplied

[Comparison between thiopental and brietal in the activation electrocorticographic records in epileptics].

For activation of electrocorticographic records the authors administered intravenously thiopental or Brietal to 86 patients undergoing operations for various types of focal epilepsy. Thiopental was administered either in intravenous drip infusion as 0.2% solution, or in a single injection of 2.5% solution. Brietal was injected as 1% solution intravenously. Thiopental activated electrocorticographic tracings in 56.3% and Brietal in 84% of the patients. In the conclusions the authors stress that both these agents may be used for activation of pathological discharges in ECoG in patients with epilepsy operated upon under general anaesthesia. Brietal seems to be better and it may be administered many times.

Adolescent↗
PubMedDate not supplied

[Case of severe epilepsy treated by 2-stage hemispherectomy].

The authors describe a 7-year-old boy with severe epilepsy cured by means of two-stage hemispherectomy. Epileptic seizures occurred in the left extremities and recurred several tens of times daily despite intensive pharmacological treatment. EEG investigations demonstrated seizure activity in the right motor-parietal-temporal area. Stereotaxic destruction of Forel's field and thalamus on the right side gave only brief improvement lasting several days. In view of this the frontal, temporal and a part of the parietal lobe were removed according to electrocorticographic investigations. During 6 months after the operation epileptic attacks were absent, than they recurred with increasing frequency. After 10 months full hemispherectomy was done. The child tolerated the operation very well, and control examination after 2 years showed disappearance of epileptic attacks and considerable compensation of motor power loss and sensory disturbances in the left extremities. The authors believe that hemispherectomy carried out in two stages at an interval of several months is better tolerated by the patients and makes possible better compensation of functional disturbances than classic hemispherectomy. In the discussion the authors stress the importance of extrapyramidal pathways for compensation of motor disturbances.

Child↗
PubMedDate not supplied

[Effect of different stages of physiological nocturnal sleep on interseizure discharges in patients with various forms of epilepsy].

All-night EEG records were obtained in 100 patients aged 14-48 years staying at a neurosurgical centre for various forms of focal epilepsy. In 84 cases discharges were observed during the nocturnal investigation. The morphology of the discharges depended on the phase of sleep during which they appeared. Discharges occurring in phases of light sleep had greater activity and more focal character in relation to the remaining NREM phases. On the other hand, discharges in deep sleep phases had a greater tendency for generalization. In half the cases focal discharges disappeared in the REM sleep phase. Intraseizure changes depended on the phase of sleep, focal or generalized character, and localization of pathological focus. Seiture activity during sleep was never observed in the REM phase of sleep.

Action Potentials↗
PubMedDate not supplied

[Effect of cerebellar cortical electrostimulation on the frequency of epileptic seizures in severe forms of epilepsy].

The authors studied 14 patients with epileptic seizures occurring from one to about 20 daily despite monitored pharmacological treatment. Two pairs of silver, properly insulated electrodes were applied to the subtentorial surface of both cerebellar hemispheres through burr-holes. The cerebellar surface was stimulated once daily for 30 min to 1 hour with electrical current at 10 Hz, 1 msec, 1-7 V during 10 to 16 days. During that time epileptic seizures disappeared completely in 5 cases, in 6 patients their frequency was reduced to one seizure every several days, in 2 cases the improvement was slight and one patient failed to improve. After cessation of electrostimulation and removal of electrodes in most cases the seizures increased again in frequently gradually. Twelve months after the procedure in only 4 cases a significant improvement remained. The authors believe that this method of cerebellar cortex stimulation should be regarded as a trial before making decision about chronic implantation of cerebellar electrostimulator for selecting patients responding well to this treatment. This group amounts to about 30% of such drug-resistant cases.

Adolescent↗