Zbigniew Karwacki

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The claustrocortical connections in the rabbit were assessed for the first time by the method of axonal retrograde transport of two fluorescent tracers (Fast Blue and Diamidino Yellow). The material consisted of 23 adult New Zealand rabbits. Projection zones of spindle-like form, connected with the precentral, postcentral, temporal and occipital cortices(More)
The claustrum is a subcortical structure lying under the insular and piriform cortices, whose function is still not clear. Although data exist on connections of the claustrum and the limbic cortex, the topography of the limbic zone in the rabbit and rat claustrum has not been studied extensively. The study was performed on 17 adult Wistar rats and 12 New(More)
Meningiomas of the lateral ventricles of the brain are rare tumours, accounting for approximately 0.5–5% of all intracranial meningiomas. Their natural history and symptomatology and the possibilities of early diagnosis are presented. The intraventricular location of the slow-growing benign mass provides a compensatory mechanism in the form of reserve(More)
A clinical analysis of 95 patients with posterior fossa tumors treated in the Department of Neurosurgery of the Medical University in Gdansk over a period of 16 years (1979–1995) is presented. The following preoperative factors were studied: localization, size and suspected type of tumor, size of the ventricular system, and presence or absence of the “halo”(More)
Spontaneous intracerebral haemorrhage carries a high mortality rate and treatment of the disease raises more questions then answers. Mass effect, ischaemia and toxicity of blood components are responsible for brain tissue damage. Initially occurring disturbances of cerebral blood flow have a temporary character and do not play a key role in the pathology of(More)
BACKGROUND The choice of an appropriate moment for endotracheal intubation is essential to avoid serious motor and cardiovascular reactions during laryngoscopy and tube insertion.The purpose of the study was to compare the effects of intubation on laryngoscopy conditions and cardiovascular response, when choice of the moment for intubation was directed by(More)
BACKGROUND Target-controlled infusion (TCI) is used to maintain the desired concentration of a hypnotic drug in the plasma and brain. However, pharmacodynamic variability can cause problems with maintaining the adequate level of anaesthesia. The bispectral index (BIS) is one of only a few parameters that allow an assessment of the depth of anaesthesia. In(More)
Intracerebral haematoma was produced in 25 adult rats by infusion of 100 microl of autologous blood into the striatum. The animals' brains were removed at 1, 3, 7, 14 and 21 days after production of the haematoma. The TUNEL method was used to detect DNA fragmentation and TUNEL-positive cells were qualified. TUNEL-positive cells were already found on the(More)
The glial cells play an important role in pathophysiology of the intracerebral haemorrhage (ICH). Thus the attempt at evaluating the possible influence of the propofol on the reactivity of astro- and microglial cells in the course of ICH was performed. 50 rats were divided into two groups depending on the applied anaesthesia. All animals were generally(More)
 The retrograde axonal transport method was used to compare the topography and organization of the visual zone of the claustrum in rat, guinea pig, rabbit and cat. First, massive Fluoro-Gold injections were placed into the primary visual cortex and the secondary areas. Experiments showed differences in the location of the visual zone among the animals under(More)