نتایج جستجو برای: conduction loss
تعداد نتایج: 481652 فیلتر نتایج به سال:
Thirty-one chronic alcoholic patients were investigated using quantitative electrophysiological techniques. Estimates of the numbers of functioning motor units in the extensor digitorum brevis muscles and measurements of the parameters of the potentials of these units are presented along with the values for motor nerve conduction velocities in the innervating lateral popliteal nerves. Motor con...
Abstract Motivated by observations of multiphase galaxy outflows, we explore the impact isotropic and anisotropic electron thermal conduction on evolution radiatively cooled, cold clouds embedded in hot, magnetized winds. Using adaptive-mesh refinement code AthenaPK , conduct simulations impacted supersonic transonic flows with magnetic fields initially aligned parallel perpendicular to flow di...
OBJECTIVE To report eight cases of sensory Guillain-Barré syndrome (GBS). BACKGROUND The concept of sensory equivalent to ascending paralysis of GBS was raised in 1958, and the diagnostic criteria for a sensory loss and areflexia variant of GBS were proposed in 1981. However, clinical cases meeting these criteria have been relatively scarce. METHODS During a 13-year period between 1986 and ...
OBJECTIVES Five databases were mined to examine distributions of air-bone gaps obtained by automated and manual audiometry. Differences in distribution characteristics were examined for evidence of influences unrelated to the audibility of test signals. DESIGN The databases provided air- and bone-conduction thresholds that permitted examination of air-bone gap distributions that were free of ...
BACKGROUND Differentiation between ventriculoatrial (VA) conduction over an accessory AV pathway (AP) and the AV node (AVN) may be difficult, especially in patients with a septal AP. METHODS AND RESULTS A new pacing method, para-Hisian pacing, was tested in 149 patients with AP and 53 patients without AP who had AV nodal reentrant tachycardia (AVNRT). Ventricular pacing was performed adjacent...
OBJECTIVE This report presents data from four studies to examine standard bone-conduction reference equivalent threshold force levels (RETFL), especially at 4 kHz where anomalous air-bone gaps are common. DESIGN Data were mined from studies that obtained air- and bone-conduction thresholds from normal-hearing and sensorineural hearing loss (SNHL) participants, using commercial audiometers and...
BACKGROUND Some patients have to stop using their air-conduction hearing aid(s) because it causes or exacerbates chronic otitis. Then, a solution is the use of a bone-conduction hearing aid such as the percutaneous bone-anchored hearing aid (BAHA). OBJECTIVE To compare patients' performance with their previous air-conduction hearing aid(s) and their BAHA using audiometric tests and a question...
Introduction Bone conduction implants are indicated for patients with conductive and mixed hearing loss, as well as for patients with single-sided deafness (SSD). The transcutaneous technology avoids several complications of the percutaneous bone conduction implants including skin reaction, skin growth over the abutment, and wound infection. The Bonebridge (MED-EL, Austria) prosthesis is a semi...
OBJECTIVE To determine factors predicting whether patients with single-sided deafness (SSD) opt for a bone conduction device (BCD) for the contralateral routing of sound (CROS) after a regular trial with a BCD on a headband. DESIGN Retrospective case-control study. SETTING Nijmegen, the Netherlands. PATIENTS Thirty consecutive patients with SSD. INTERVENTIONS Patients received a trial w...
Introduction Hearing loss is the most common clinical finding in patients with malformation of the external ear canal. Among the possibilities of treatment, there is the adaptation of hearing aids by bone conduction and the adaptation of implantable hearing aids. Objective To assess speech perception with the use of Vibrant Soundbridge (VBS - MED-EL, Innsbruck, Austria) associated with addition...
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