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Biomedical subjects

M A Marsh

Publications and source records attributed to M A Marsh.

7 recordsLinked to original sources
PubMed1992

Histopathology of the temporal bone following multichannel cochlear implantation.

The temporal bone histopathologic findings of a patient having received a Nucleus 22-channel cochlear implant (Cochlear Corp, Englewood, Colo) following bilateral transverse otic capsule fractures is presented. The case was complicated by perilymph fistulas, labyrinthitis, meningitis, and death due to drowning. The left cochlea revealed complete labyrinthitis ossificans; the implanted right cochlea demonstrated new bone formation in the basal turn of the scala tympani, degeneration of the organ of Corti, but normal ganglion cell counts. Results of psychophysical and speech perception 4 months after implantation are presented.

Adult↗
PubMed1992

Temporal bone histopathology of a patient with a nucleus 22-channel cochlear implant.

The temporal bone histopathology of a patient with profound sensorineural hearing loss attributable to cochlear otosclerosis is presented. The patient had a Nucleus 22-channel cochlear prosthesis implanted in the right ear prior to his demise. Unintentional scala media insertion of the electrode array resulted from labyrinthitis ossificans obliteration of the scala tympani. Inadvertent facial nerve stimulation necessitated program exclusion of electrodes 11 to 16 located in proximity to the labyrinthine and geniculate segments of the facial nerve. The patient received significant benefit from use of the device. The histopathologic findings are correlated with psychophysical and speech perception results.

Cochlear Diseases↗
PubMed1991

Ossifying fibroma of the mid-face and paranasal sinuses: diagnostic and therapeutic considerations.

Ossifying fibroma is benign, usually slow-growing tumor that may behave in an unpredictably aggressive fashion. Most of these unusual tumors affect the mandible. Their behavior in the mid-face and paranasal sinuses is not well documented. In our review of the subject, and of the cases presented, it appears that these lesions behave more aggressively than their mandibular counterparts. A more aggressive approach may be more beneficial than expectant observation or curettage in the initial management of this neoplasm.

Adolescent↗
PubMed1991

Surgical decompression of idiopathic facial palsy.

There is no consensus on the cause of Bell's palsy, just as there is no proven medical therapy. Disregarding the numerous theoretic causes, preponderant anatomic, electrophysiologic, radiologic, clinical, and pathologic evidence supports entrapment at the medical foramen of the fallopian canal as a final common pathway resulting in facial nerve ischemia and degeneration. Middle cranial fossa decompression of the meatal foramen may benefit those patients most severely affected with Bell's palsy.

Electrodiagnosis↗
PubMed1991

Vestibular testing in hearing loss.

The basic electonystagmography battery (saccade, gaze, position, caloric tests, and spontaneous nystagmus) are described along with rotational testing and dynamic posturography. Emphasis is placed on interpretation, relative benefits, and limitations as an aid in diagnosis.

Caloric Tests↗
PubMedDate not supplied

Discharge planning.

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Clinical Nursing Research↗