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11.
Richter B Aschendorff A Lohnstein P Husstedt H Nagursky H Laszig R 《The Journal of laryngology and otology》2002,116(7):507-513
The purpose of this study was to evaluate whether use of a positioner for situating the Clarion 1.29 standard electrode array in close proximity to the modiolus, causes damage to fine intra-cochlear structures, and to provide a comparison with results obtained for insertions of the array performed without a positioner. The study was performed in seven freshly frozen human temporal bones. Electrode location and intra-cochlear trauma was analysed using cross-sectional imaging and histological analysis. Insertion of the Clarion array did not reveal major trauma. The devices inserted with the positioner showed a consistently closer location of the electron array towards the modiolus, however, insertion resulted in significant displacement of both the electrode array and the positioner resulting in severe destruction of the basilar membrane and osseous spiral lamina along the length of the basal and middle turns. The devices inserted with the positioner resulted in major trauma to the basilar membrane and osseous spiral lamina. Therefore, systematic safety studies in larger samples of human temporal bones should be performed and the results carefully evaluated before implantation can be recommended unreservedly. 相似文献
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Hackethal U Holzapfel C Gerding H Husstedt IW 《Klinische Monatsbl?tter für Augenheilkunde》2003,220(6):391-395
Cidofovir, a nucleotide analogue virostatic drug is effective in the treatment of herpes virus infections. However, cytomegaly infection is the prime indication due to its adverse effects. There is growing evidence suggesting cidofovir's effectiveness against progressive multifocal leukoencephalopathy (PML) caused by a reactivation of JC-virus. Chronic ocular hypotension which seems to be therapy refractory and anterior uveitis are considered to be the most serious ocular complications of cidofovir. Secondary side effects such as macular folds, retinal or choroidal detachment can result in a permanent loss of vision. Little is known about the pathology of reduced intraocular pressure and only few reports deal with therapeutical attempts to compensate this complication. Abandoning cidofovir presently remains the only therapeutic option. To avoid serious damage it is of utmost importance to monitor all patients undergoing cidofovir administration for signs of anterior uveitis and ocular hypotension. 相似文献
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Gerding H Vo O Husstedt IW Evers S Sörös P 《Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft》2003,100(11):943-949
ZusammenfassungHintergrund Phantomschmerzen sind ein in vielen chirurgischen Disziplinen bekanntes Symptom. Bei ophthalmologischen Patienten wurde das Auftreten von Phantomschmerzen nach Enukleation mit Ausnahme einer Pilotstudie [19] bislang nicht systematisch untersucht.Fragestellung Ziel war es, an einem umfassenden Kollektiv von Patienten mit standardisiertem operativen Vorgehen das Auftreten von Phantomschmerzen nach Enukleation zu erheben und die Relation zu verschiedenen prä- und postoperativen Faktoren zu analysieren.Patienten und Methoden Standardisierte retrospektive Befragung von Patienten nach Enukleation.Ergebnisse Phantomschmerzen nach Enukleation berichteten 24/94 Probanden (26%). Phantomschmerzen wurden überwiegend (17/24) selten (<einmal monatlich) und nur von 2/24 häufiger als an 4 Tagen/Monat angegeben. Patienten mit Phantomschmerzsymptomatik waren häufiger von anderen perioperativen Schmerzsymptomen (präoperativer Augenschmerz, prä- und postoperative Kopfschmerzsymptomatik, alle p<0,0025) betroffen als Patienten ohne Phantomschmerzen.Schlussfolgerungen Phantomschmerzen des Auges werden bei etwa 1/4 aller Patienten nach Enukleation mit niedriger Symptomfrequenz beobachtet. Eine perioperative Augen- bzw. Kopfschmerzsymptomatik korreliert signifikant mit dem Auftreten von Phantomschmerzen.In Auszügen vorgetragen auf der 99. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft in Berlin, 29.9.–2.10.2001. 相似文献
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Evers S Nabavi D Rahmann A Heese C Reichelt D Husstedt IW 《Cerebrovascular diseases (Basel, Switzerland)》2003,15(3):199-205
Several case reports and series described ischaemic cerebrovascular events in HIV infection. However, the exact prevalence and the clinical features of these events are unknown. We performed a cohort study on 772 consecutive HIV infected patients and evaluated the rate of transient ischaemic attacks (TIA) and of completed stroke. A total prevalence of 1.9% for TIA (0.8%) and stroke (1.2%) was calculated resulting in an annual incidence rate of 216 per 100000. The prevalence was highest in the later stages of the infection. Stroke patients had a poorer immunological state than the TIA and the cohort patients. Probable (n = 3) and possible (n = 2) vasculitis and cardiogenic embolism (n = 2) could be detected as aetiology, the remaining patients had a cryptogenic event. Our data suggest that ischaemic cerebrovascular events are more common in HIV infected patients than in the general population and that a part of these events might be caused by HIV associated vasculitis or vasculopathy. 相似文献
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INTRODUCTION: The trematode infection schistosomiasis affects at least 200 million people in endemic areas. Granulomas cause the typical manifestations of urogenital, intestinal and hepatolienal schistosomiasis. Involvement of other organs especially the central nervous system (CNS) is uncommon. CASE REPORT: We describe a 40-year old male with a history of repeated contact with schistosome contaminated water. After having suffered from flu-like symptoms with fever and arthralgias, he first presented with a polyradiculopathy of unknown origin. Then 4 weeks later an acute tetraparesis occurred. Spinal magnetic resonance imaging (MRI) revealed a spinal stenosis and query medullary hyperintensities at C6-C8 without contrast-enhancement. Serologic testing was positive for schistosomiasis. The intraoperative appearance at decompressive laminectomy revealed a myelitic form of schistosomiasis. Under therapy with praziquantel, initially high dose cortisone and intensive physiotherapy, symptoms slowly improved over months. On follow-up 1 year later, the patient presented with a spastic distally marked tetraparesis and sensory impairment from C6 downwards. CONCLUSION: Cervical intramedullar schistosomiasis is a rare cause of acute tetra- or para-paresis in patients, who have had contact with schistosomes. Early diagnosis is essential because of the excellent prognosis with specific therapy. 相似文献
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Prostaglandin E analogs have been shown to be effective in the treatment of refractory trigeminal neuralgia in patients with multiple sclerosis. Prostaglandin E inhibits the functions of T lymphocytes which are involved in the pathophysiology of cluster headache. Therefore, a double-blind, placebo-controlled, crossover study on the efficacy of misoprostol in chronic refractory cluster headache was performed. Eight patients were treated with 600 micrograms misoprostol and with placebo for a 2-week period. No differences in attack frequency, intensity, global impression, and side effects could be detected, suggesting that prostaglandin E analogs are not effective in the treatment of chronic cluster headache. 相似文献
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Frese A Rahmann A Gregor N Biehl K Husstedt IW Evers S 《Cephalalgia : an international journal of headache》2007,27(11):1265-1270
The aim of this study was to provide data on the prognosis and treatment options of headache associated with sexual activity (HSA). Sixty patients diagnosed with HSA between 1996 and 2004 were followed up between 2003 and 2006 at least 12 months after the first interview. The further course of the disease and their contentedness with therapy were requested. On average, the second interview was performed 35.9 months after the first examination. Of the 45 patients who had suffered from single attacks or bouts prior to baseline examination, 37 had no further attacks. Seven patients suffered from at least one further bout with an average duration of 2.1 months. One patient developed a chronic course of the disease after an episodic start. Of the 15 patients with chronic disease at the first examination, seven were in remission and five had ongoing attacks at follow-up. Ten patients received indomethacin for preemptive therapy, with good results in nine patients. Eighteen patients received beta-blockers for prophylaxis, with good results in 15 patients. Episodic HSA occurs in approximately three-quarters and chronic HSA in approximately one-quarter of patients. Even in chronic HAS, the prognosis is favourable, with remission rates of 69% during an observation period of 3 years. For patients with longer-lasting bouts or with chronic HSA, prophylactic treatment with beta-blockers or preemptive therapy with indomethacin are often successful. 相似文献