Chapter 030 Disorders of Smell, Taste, and Hearing (Part 7) pps
Chapter 030. Disorders of Smell, Taste, and Hearing (Part 7) pps
... homozygous and affected. The hearing loss can also vary Chapter 030. Disorders of Smell, Taste, and Hearing (Part 7) Ear anatomy. A. Drawing of modified coronal section through external ear and ... and temporal bone, with structures of the middle and inner ear demonstrated. B. High-resolution view of inner ear. Stereocilia of the hair cells of the organ of Corti, which rests on the basilar ... Nearly two-thirds of HHIs are nonsyndromic, and the remaining one-third are syndromic. Between 70 and 80% of nonsyndromic HHI is inherited in an autosomal recessive manner and designated DFNB;...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 8) ppsx
... Delayed rectifier K+ channel Delayed rectifier K+ Chapter 030. Disorders of Smell, Taste, and Hearing (Part 8) The contribution of genetics to presbycusis (see below) is also becoming ... organification defect and hearing loss), Alport syndrome (renal disease and hearing loss), Jervell and Lange-Nielsen syndrome (prolonged QT interval and hearing loss), neurofibromatosis type 2 ... are >400 syndromic forms of hearing loss. These include Usher syndrome (retinitis pigmentosa and hearing loss), Waardenburg syndrome (pigmentary abnormality and hearing loss), Pendred syndrome...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 11) ppsx
... ear under test. Chapter 030. Disorders of Smell, Taste, and Hearing (Part 11) Approach to the Patient: Disorders of the Sense of Hearing The goal in the evaluation of a patient with auditory ... unilateral hearing loss (sensory or conductive) usually complain of reduced hearing, poor sound localization, and difficulty hearing clearly with background noise. Gradual progression of a hearing ... noise exposure, and family history of hearing impairment may also be important. A sudden onset of unilateral hearing loss, with or without tinnitus, may represent a viral infection of the inner...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 12) ppsx
... canal is changed. Chapter 030. Disorders of Smell, Taste, and Hearing (Part 12) The responses are measured in decibels. An audiogram is a plot of intensity in decibels of hearing threshold ... The presence of OAEs indicates that the outer hair cells of the organ of Corti are intact and can be used to assess auditory thresholds and to distinguish sensory from neural hearing losses. ... represents doubling of sound pressure, and a change of 20 dB represents a tenfold change in sound pressure. Loudness, which depends on the frequency, intensity, and duration of a sound, doubles...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 1) doc
... Harrison's Internal Medicine > Chapter 30. Disorders of Smell, Taste, and Hearing Smell The sense of smell determines the flavor and palatability of food and drink and serves, along with the ... potential spatial map of how we receive odor stimuli, much like the tonotopic organization of how we perceive sound. Chapter 030. Disorders of Smell, Taste, and Hearing (Part 1) Harrison's ... glossopharyngeal, and vagal afferents in the nose, oral cavity, tongue, pharynx, and larynx. Flavor is the complex interaction of taste, smell, and somatic sensation. Terms relating to disorders of smell...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 2) ppt
... Chapter 030. Disorders of Smell, Taste, and Hearing (Part 2) Disorders of the Sense of Smell These are caused by conditions that interfere with the access of the odorant ... gliomas of the frontal lobe. Occasionally, pituitary adenomas, craniopharyngiomas, suprasellar meningiomas, and aneurysms of the anterior part of the circle of Willis extend forward and damage ... are head trauma in children and young adults, and viral infections in older adults. Table 30-1 Causes of Olfactory Dysfunction disease progresses. The loss of taste and smell may play an important...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 3) pdf
... sensation and find it necessary to hyperflavor food, usually by increasing the amount of salt in their diet. Taste Compared with disorders of smell, gustatory disorders are uncommon. Loss of olfactory ... spontaneous recovery often occurs. Zinc and vitamin therapy (especially with vitamin A) are advocated by some. Profound zinc deficiency can produce loss and distortion of the sense of smell but is ... olfactory bulbs, ventricles, and other soft tissue of the brain. Coronal CT is optimal for assessing cribriform plate, anterior cranial fossa, and sinus anatomy. Biopsy of the olfactory epithelium...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 4) pdf
... margin and dorsum of the tongue; at the junction of the dorsum and the base of the tongue; and in the palate, epiglottis, larynx, and esophagus. Figure 30-2 Chapter 030. Disorders of Smell, Taste, ... Taste, and Hearing (Part 4) Definitions Disturbances of the sense of taste may be categorized as total ageusia, total absence of gustatory function or inability to detect the qualities of sweet, ... between the loss of and other sensory systems, intensity appears to be encoded by the quantity of neural activity. The sense of taste is mediated through the facial, glossopharyngeal, and vagal...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 5) pptx
... Chapter 030. Disorders of Smell, Taste, and Hearing (Part 5) Disorders of the Sense of Taste Disorders of the sense of taste are caused by conditions that interfere with the access of ... to the oral cavity and pharynx; viral infections; endocrine disorders; neoplasms; and aging. Neural gustatory losses occur with neoplasms, trauma, and surgical procedures in which ... heavy-metal intoxication, and bacterial colonization of the taste pore. Sensory gustatory losses are caused by inflammatory and degenerative diseases in the oral cavity; a vast number of drugs, particularly...
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Chapter 030. Disorders of Smell, Taste, and Hearing (Part 6) pot
... variety of forms of xerostomia. Appropriate treatment of bacterial and fungal infections of Chapter 030. Disorders of Smell, Taste, and Hearing (Part 6) Approach to the Patient: Disorders of ... common sensory disorders in humans and can present at any age. Nearly 10% of the adult population has some hearing loss, and one-third of individuals >65 years have a hearing loss of sufficient ... Sense of Taste: Treatment Treatment of gustatory disorders is limited. No effective therapies exist for the sensorineural disorders of taste. Altered taste due to surgical stretch injury of the...
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