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  • 1
    Electronic Resource
    Electronic Resource
    Proximal clipping of dissecting intracranial vertebral aneurysm — effect of balloon Matas test with neurophysiological monitoring (1990)
    Springer
    Acta neurochirurgica 104 (1990), S. 59-63 
    Details
    ISSN: 0942-0940
    Keywords: Dissecting aneurysm ; vertebral aneurysm ; subarachnoid haemorrhage ; somatosensory evoked potentials ; auditory brain stem responses
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A case of repeated subarachnoid haemorrhage (SAH) caused by rupture of a dissecting intracranial vertebral aneurysm is reported. The clinical manifestations, angiographic findings, pre-operative assessment with neurophysiological monitoring, and surgery are presented. A review of the literature suggests that this type of intracranial aneurysm is being recognized with increasing frequency in SAH and fatality, and therefore exploration and treatment of vertebrobasilar (V-B) dissecting aneurysms is necessary. We emphasize that a balloon Matas test with monitoring of somatosensory evoked potentials (SEP), auditory brain stem responses (ABR), and its wedge pressure in occluding the vertebral artery before operation are objective assessments of treatment for dissecting intracranial vertebral aneurysm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01842895
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Bifrontal interhemispheric approach for carotid-ophthalmic aneurysms (1988)
    Springer
    Acta neurochirurgica 90 (1988), S. 84-90 
    Details
    ISSN: 0942-0940
    Keywords: Carotid-ophthalmic aneurysm ; biofrontal interhemispheric approach ; temporary arterial occlusion ; subarachnoid haemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report their experience with the surgical treatment of carotid-ophthalmic aneurysms in 29 cases, and describe their surgical technique. The technique can be summarized as follows. When dissecting the aneurysm, temporary vascular occlusion of the common carotid artery and external carotid artery is done in the neck under the administration of cerebral protective substances. Through a bifrontal craniotomy, wide dissection of the Sylvian fissures and the interhemispheric fissure is performed. When necessary, the anterior clinoid process and the roof of the optic canal are removed. This approach allows for observation of the neck of the aneurysm from various angles, thus facilitating clipping of the neck. There have been no previous reports of direct surgery on carotidophthalmic aneurysms using an interhemispheric approach, but this approach provides a much larger operative field and a better exposure of the aneurysm than other surgical approaches.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01560560
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Development of calcitonin gene-related peptide slow-release tablet implanted in CSF space for prevention of cerebral vasospasm after experimental subarachnoid haemorrhage (1996)
    Springer
    Acta neurochirurgica 138 (1996), S. 1230-1240 
    Details
    ISSN: 0942-0940
    Keywords: Calcitonin gene-related peptide ; slow-release tablet ; subarachnoid haemorrhage ; cerebral vasospasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The calcitonin gene-related peptide (CGRP), a known potent intrinsic cerebral vasodilator, is contained in the sensory nerves from trigeminal ganglia that inervate the cerebral arteries. We previously reported that human α CGRP (hCGRP) dilates spastic cerebral arteries after experimental subarachnoid haemorrhage (SAH) in rabbits. In the present study, we investigated the prophylactic potential of a sustained higher cerebrospinal fluid level ofhCGRP against experimental cerebral vasospasm. AnhCGRP slow-release tablet (hCGRP s-r tablet) was developed for cisternal implantation. Experimental SAH was induced by percutaneous cisternal injection of autologous arterial blood. Angiography was initiated on day 1 (before SAH) and performed everyday. ThehCGRP s-r tablet was implanted into the cisterna magna on day 2 in the treated groups. The spastic response of the basilar artery was maximized on day 4 in the non-treated (80.7% of day 1) and the placebo-treated (79.3%) groups. In contrast, the arterial diameters on day 4 were 96.1% and 90.5% of day 1 in the groups implanted withhCGRP 24 μg and 153 μg s-r tablets, respectively. We also measured the concentration ofhCGRP in the cerebrospinal fluid (CSF) following implantation of thehCGRP 24 μg s-r tablet in the cisterna magna. The hCGRP concentration before implantation was below the dectable level. Following implantation, thehCGRP level in the CSF was 23.12 nmol/L on the second day and remained at elevated levels until the fifth day. These experiments suggest that the intrathecal single implantation of thehCGRP s-r tablet could produce an elevated concentration ofhCGRP in the CSF over five days and have prevented the cerebral vasospasm after SAH in the rabbit. ThehCGRP s-r tablet may be clinically applicable in the treatment of patients with SAH against cerebral vasospasm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01809753
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Early CT features of ruptured cerebral aneurysms of the posterior cranial fossa (1991)
    Springer
    Acta neurochirurgica 108 (1991), S. 34-39 
    Details
    ISSN: 0942-0940
    Keywords: CT finding ; subarachnoid haemorrhage ; posterior circulation aneurysm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This report describes our retrospective evaluation of CT features of the acute phase in 34 cases of ruptured cerebral aneurysms of the posterior cranial fossa. The results are as follows. 1. Examination of cisternal haematoma distribution revealed that SAH had extended to the supra- and infratentorial cisterns in 28 cases (82%). There were only 6 cases (18%) in which SAH was confined to the posterior cranial fossa only but even when there was subarachnoid haematoma in both the supra- and infratentorial cisterns, thick haematomas were seen at the periphery of the brain stem. In cases of vertebral artery-posterior inferior cerebellar artery aneurysms (VA-PICA AN), haematomas in the ambient cistern were thicker on the aneurysm side. In addition, in cases of basilar arterybifurcation (BA-Bifurcation AN) and basilar artery-superior cerebelli artery aneurysms (BA-SCA AN), there were many thick, highdensity haematomas in the interpeduncular cistern. 2. The rate of intracerebral haemorrhage was extremely low (1 patient). 3. The rate of intraventricular haemorrhage was high, and these haemorrhages demonstrated a reflux pattern. 4. The rate of hydrocephalus was high (76.5%) in comparison with that noted in association with SAH due to the rupture of anterior circulation aneurysms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01407664
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    Paper (German National Licenses)
    Fulltext
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