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Biomedical subjects

I Kojder

Publications and source records attributed to I Kojder.

33 records · Page 2Linked to original sources
PubMedDate not supplied

[Visual evoked potentials in patients with a history of non-traumatic intracranial hemorrhage].

The authors present the results of preliminary investigations of visual evoked potentials in patients long after intracerebral haemorrhage. In 32 studied patients prolongation was observed of the latency of waves N1 and N2 as well as P1, and this prolongation was more pronounced in the case of stimulation of the eye contralateral to the hemisphere with the lesion. This asymmetry of latency occurred with similar irregularity in case with all locations of the lacuna, with the exception of the occipital lobe. In the latter case a much greater prolongation of Ni and Pi latency on the affected side.

Cerebral Cortex↗
PubMedDate not supplied

[Our method of projecting onto the skull surface the intracranial lesions diagnosed by computerized tomography].

The author presents an own method for the projection onto the surface of the skull of intracranial lesions demonstrated by means of computerized tomography. The method makes possible a more precise and sparing craniotomy and calculation of the irradiation field in case of radiotherapy. The advantage of the method is its easy availability and independence of computerized calculations. It may be applied only to CT images.

Brain Diseases↗
PubMedDate not supplied

[Analysis of the effects of various methods of classical exclusion of anterior cerebral artery aneurysms on late structural and functional changes in relation to the various approaches].

The effects were analysed of various techniques of classical exclusion of aneurysms in the anterior cerebral artery system on the late therapeutic result and on the development of ischaemic lesions in the area of approach to the aneurysm. The approaches used were: interhemispheric, fronto-temporal and fronto-temporo-sphenoidal, and the aneurysms were excluded with a ligature or metal clip. The best method of approach was chosen after analysis of late results of neurological, psychological and CT studies. It was demonstrated that pressure of a spatula during the operation may produce permanent ischaemic changes at the site of the pressure which may lead to persistence of psychic disturbances late after the operation. It was shown also that the most favourable classic technique of operation in cases of aneurysms in this portion is the fronto-temporo-sphenoidal approach with use of a metal clip.

Adult↗
PubMedDate not supplied

[Variability of V waves of auditory evoked potentials in patients with supratentorial transverse displacement of the brain caused by intracranial hematoma].

The authors present a comparative analysis of the characteristics of the V wave of the brain stem auditory evoked potentials in relation to the degree of transverse shifting of the third ventricle. The investigations were carried out in 48 patients with non-traumatic intracerebral haematoma. A high correlation was found between the size of the amplitude and ventricle shift. No such correlation was observed with the interpeak time of the I--V waves.

Adult↗
PubMedDate not supplied

[Evaluation of the efficiency of intracranial volume compensation before and after surgical treatment of intracranial hematoma].

On the ground of the clinical status and indicators of intracranial pressure instability and cerebral arterial reactivity the authors evaluated the efficiency of intracranial volume compensatory mechanisms in 21 patients before and after operations for epidural and subdural haematomas and spontaneous intracerebral haematomas. The epidural haematomas in a greater degree but less permanently exhausted the efficiency of the compensatory mechanisms than subdural haematomas and after their removal these mechanisms regained easier their efficiency than after removal of subdural haematomas. In cases of spontaneous intracerebral haematomas the efficiency of the compensatory mechanisms is only slightly decreased.

Adaptation, Physiological↗
PubMedDate not supplied

[Case of intracranial chondroma].

The authors present a case of intaracranial chondrome originating from the pia mater and discuss the development of intracranial chondromas and role of cranial trauma in it.

Adult↗
PubMedDate not supplied

[Our evaluation of clinical usefulness of continuous extradural measurement of intracranial pressure in patients with cranio-cerebral injuries].

Continuous measurements of intracranial, pressure were conducted by the extradural method in 40 patients with various types of skull trauma. A correlation was demonstrated between the value of this pressure and the clinical condition of the patient only with high values of the pressure, in which nearly always wave-like pressure changes were observed. The occurrence of wave-like changes was a more reliable sign of threatening cranial hypertension than the value of intracranial pressure. Continuous measurement of pressure during intravenous administration of glycerol demonstrated that a significant fall of pressure preceded the regression of clinical signs of intracranial hypertension.

Adolescent↗
PubMedDate not supplied

[Spinal reflexes in the determination of brain death].

The authors present the results of spinal cord function evaluation in organ donors by examination of reflexes. The knee reflex and ankle jerk, as well as abdominal reflex and foot withdrawal reaction were tested in 31 donors. At least one of the above was seen in 25 individuals. It is suggested on the basis of data obtained not to hamper the transplant procedure in cases of tested reflex persistency when brain death is revealed on relevant examination.

Adolescent↗
PubMedDate not supplied

[Brain stem auditory evoked potentials in brain death state].

The authors studied auditory brainstem evoked potentials (BAEP) in 27 organ donors aged 40 to 68 years treated in neurosurgery units in Szczecin and Grenoble. Abnormal results were found in all cases. In 63% of cases no evoked action potentials were obtained, in 34% only the 1st wave was obtained, and in two cases evolution was observed with activity extinction. The authors believe that in the process of shaping of BAEP morphotic extinction begins from the later waves to earlier ones in agreement with the rostrocaudal direction of extinction of the functions or brain midline structures, and in a single study various findings may be obtained.

Adult↗