 |
|
Heparin in Perceptive Deafness
EMERY I. PICK, M.D.
AMA Arch Otolaryngol. 1955;61(4):422-428.
|
|
| Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings. |
|
|
|
Regardless whether a hearing defect is a scalar or a nerve type, the etiology of perceptive deafness is dubious in many cases. An etiologic classification might include:
- Congenital anomalies
- Endogenous and exogenous injuries, toxins, acoustic traumas
- Acute and chronic infections
- Tumors
- Psychogenic deafness
- Labyrinth otosclerosis
- Systemic diseases
- Cardiovascular diseases and blood dyscrasias
- Allergic vascular and tissue changes
- Metabolic disorders
- Hormonal, enzyme, vitamin disturbances
Little is known about the etiology of a large group of cases of end-organ deafness, developing around middle age, progressing slowly or rapidly, and, in many instances, preceded or accompanied by tinnitus. It has been tagged as ischemia, but what is behind the ischemia? Vascular spasm? The latter seems to be very doubtful in view of the latest works on arteriolar and precapillary physiology. Is it a deficiency of the hormone, enzyme, vitamin complexes necessary in tissue oxygen supply and in utilization of oxygen by the cell?
. . . [Full Text PDF of this Article]
Author Affiliations
Los Angeles
 CiteULike  Connotea  Del.icio.us  Digg  Reddit  Technorati  Twitter
What's this?
|
