W P Sollmann

Learn More
A ruptured dissecting right vertebral artery aneurysm was treated by means of double stent placement with two overlapping stents. Control angiography performed 3 d after stent placement revealed beginning aneurysmal thrombosis. Substantial reduction in aneurysmal size was observed after 4 wk, whereas total occlusion was observed after 3 mo. The reduced(More)
The auditory brainstem implant (ABI) is designed to restore useful auditory sensations in patients with neurofibromatosis Type 2 (NF2). The implantation is usually performed at the time of tumor removal in patients who do not undergo radiation treatment. The authors evaluated the performance of ABIs in three patients with NF2 in whom vestibular schwannoma(More)
Epidural application of local anesthetics or opiates is commonly used for treatment of severe pain or arterial obstruction. We discuss two cases of complications following peridural anesthesia. As an acute complication, a lumbar epidural hematoma developed hours after placement of the catheter and caused sciatic pain and nearly complete paraplegia. The(More)
PURPOSE The aim of the current study was to review the use of free tissue transfer for reconstruction of the skull base and for coverage of intracranial contents. PATIENTS AND METHODS From 1990 until 1996, revascularized flaps were transferred to the skull and the skull base in 11 patients in whom intracranial/extracranial resection of tumors of the skull(More)
Patients with bilateral total deafness due to lesions of the vestibulocochlear nerve can be treated by electrical stimulation of the second auditory neuron. A 22-channel multi-electrode implant with transcutaneous transmission was developed that allows the selection of the most useful electrodes. Acoustic neuromas were removed from 49 out of 58 patients by(More)
BACKGROUND Auditory brainstem implant (ABI) is an electroprosthetic device enabling sound sensations in deaf persons with a bilateral lesion of auditory nerves. Stimulation of auditory nuclei in the floor of the IVth ventricle is realized by an electrode array introduced during surgery in the lateral recess of the IVth ventricle. METHODS AND RESULTS The(More)
Since 1992 11 subjects with bilateral neural deafness due to cerebellopontine angle tumors have been provided with a multichannel auditory brainstem implant. The long term follow-up varies between 12 and 48 months. 10 subjects experienced auditory sensations with various pitch during stimulation of several surface electrodes, 7 of them are still full time(More)
Since 1992 18 patients with bilateral retrocochlear deafness have been provided with a multichannel auditory brainstem implant (ABI). The surgical procedure implies tumour removal and ABI implantation in one stage. Most implantations were via the translabyrinthine approach. The long-term follow-up varied between nine and 80 months. In one case auditory(More)