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Biomedical subjects

J L Sheehy

Publications and source records attributed to J L Sheehy.

At least 55 records · Page 3Linked to original sources
PubMed1978

Tympanoplasty: cartilage prostheses--a report of 564 cases.

We reviewed 564 tympanoplasties operated upon over an eight year period at the Otologic Medical Group in which tragal cartilage was used to re-establish the sound pressure transfer mechanism. Eighty-six percent of the cases were revisions, and half of these were planned second stage procedures. In the majority of cases the stapes crural arch was missing. The conductive deficit in these cases was reduced to 20 db or less in 67% and 10 db or less in 40%. The commonest single cause of failure was a short prosthesis. There were no instances of cartilage resorption. Extrusion occurred in one case. Tragal cartilage has been more satisfactory than ossicular tissue in many situations. Recently we have been using plastic prosthesis (TORP and PORP) in combination with tragal cartilage and believe that the results will be even better.

Cartilage↗
PubMed1978

Surgical correction of far advanced otosclerosis.

The patient with far advanced otosclerosis (a nonmeasurable bone-air gap) may appear superficially to be suffering from profound or total sensorineural impairment. Only by a careful history and examination can a proper diagnosis be made. Stapedectomy has produced satisfactory results in 46 per cent of these cases in our hands.

Bone Conduction↗
PubMed1976

Acoustic reflex test in neuro-otologic diagnosis. A review of 24 cases of acoustic tumors.

Acoustic and other tumors of the cerebellopontine angle are not uncommon, and they usually have otologic symptoms or findings. Early diagnosis depends on a high index of suspicion and a thorough evaluation of patients with suspected tumors. This is a report of 24 cases selected from a group of 184 surgically confirmed tumors. Had the cases been evaluated only on the basis of pure tone or speech audiometry or on the basis of plain roentgenograms, the diagnosis might not have been made. Audiological examination should include the acoustic reflex test. The results of this test indicated a retrocochlear problem (absence or decay of the reflex) in 19 of 24 cases (80%). The test was positive in 11 of 12 patients with normal or near normal hearing and in seven of eight patients with normal x-ray films.

Adolescent↗
PubMed1976

Sudden sensori-neural hearing impairment: a report of 1,220 cases.

We reviewed the findings in 1,220 cases of sudden sensori-neural hearing impairment encountered over a nine-year period at the Otologic Medical Group. A thorough neuro-otologic evaluation is indicated in each case. Ten patients had an acoustic tumor. A vasodilator regimen was prescribed in 380 cases and resulted in hearing improvement in 40%. Favorable prognostic findings were a low tone loss and absence of vertigo.

Adolescent↗
PubMed1976

Stapedectomy: gelfoam compared with tissue grafts.

The commonest causes of failure with the prefabricated wire loop-gel foam pad technique are inferior displacement of the loop in the window, high membrane formation and window fibrosis. As a result of these problems some members of the Otologic Medical Group have abandoned the use of gelfoam in favor of tissue grafts. A comparison of the results with gelfoam, fat grafts, and fascia grafts in 573 primary cases is made. Tissue grafts yielded a lower incidence of postoperative vertigo, of temporary and permanent sensori-neural hearing impairment, of fistulas and of long-term hearing regression. The conclusion is that a tissue graft is preferable to gelfoam as an oval window covering in stapedectomy.

Adipose Tissue↗