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Voice Disorders Clinical Applications Chapter 6

Voice Disorders Clinical Applications Chapter 6. Perry C. Hanavan , AuD. Electroglottography (EGG) or Laryngography. EGG Vibrato lab.mov  a system which gives information on the closure of vocal folds by measuring electrical resistance between two electrodes placed around the neck.

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Voice Disorders Clinical Applications Chapter 6

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  1. Voice Disorders Clinical ApplicationsChapter 6 Perry C. Hanavan, AuD

  2. Electroglottography (EGG) or Laryngography • EGG Vibrato lab.mov •  a system which gives information on the closure of vocal folds by measuring electrical resistance between two electrodes placed around the neck

  3. Endoscopy and Videostroboscopy • Videotaping with a technique called stroboscopy to evaluate the function of the vocal cords, or larynx, in people with voice disorders • During speech, the vocal folds too rapidly to permit examination with a normal light source

  4. Videokymography (VKG) • Videokymography - automatic detection • Videokymography (VKG) • High-speed medical imaging method to visualize the human vocal fold vibration dynamics

  5. Amyotrophic Lateral Sclerosis (ALS) • A.L.S. - Lou Gehrig's disease • Progressive degeneration of the motor neurons of the central nervous system, leading to wasting of the muscles and paralysis

  6. Parkinson’s Disease • How Parkinson's Disease Affects the Body -- The Doctors • Progressive disorder of the nervous system that affects movement • Develops gradually, sometimes starting with a barely noticeable tremor in just one hand

  7. Unilateral Vocal Fold Paresis/Paralysis

  8. Voice Disorders • Diplophonia • Muscle Tension Dysphonia (MTD) is a general term to describe excessive and unnecessary tension of laryngeal muscles during voicing.  • MTD is often referred to by many different names including - hyperfunction, functional dysphonia, ventricular or false vocal fold compression, etc.  • MTD is thought to be a compensatory mechanism in the presence of underlying laryngeal pathology.  • Symptoms often include a sensation of excessive laryngeal tension and strain, vocal fatigue, and hoarseness. • Neurologic • Spasmodic disphonia • Spasmodic disphonia

  9. Paradoxical Vocal Fold Motion • Paradoxical Vocal Cord Motion •  (PVFM) is a voice disorder • Vocal folds (cords) behave in a normal fashion almost all of the time, but, when an episode occurs, the vocal cords close when they should open, such as when breathing

  10. Gastroesophageal Reflux Disorder (GERD) • The Effects of Gastric Acid on the True Vocal Cords • Gastroesophagealrefers to the stomach and esophagus • Reflux means to flow back or return • Gastroesophagealreflux is the return of the stomach's contents back up into the esophagus

  11. Laryngeal Cancer

  12. Hearing Loss • Navigating deafness in a hearing world | Rachel Kolb | TEDxStanford

  13. Transsexual Voice • FTM transgender/transsexual- Voice comparison from pre-T to 5.5 months on T

  14. Medications Adversely Affecting Voice • Antidepressants • Muscle relaxants • Diuretics • Antihypertensives (blood pressure medication) • Antihistamines (allergy medications) • Anticholinergics (asthma medications) • High-dose Vitamin C (greater than five grams per day)   • Angiotensin-converting-enzyme (ACE) inhibitors (blood pressure medication) may induce a cough or excessive throat clearing. • Pill may cause edema in the vocal cords due to estrogen. • Estrogen replacement therapy post-menopause may have effect. • Low level of thyroid replacement medication in patients with hypothyroidism. • Anticoagulants (blood thinners) may increase chances of vocal cord hemorrhage or polyp formation in response to trauma.

  15. Medical ConditionsAffecting Voice • Poor health • Laryngitis • Laryngopharyngeal Reflux Disease (LPRD) • Voice misuse and overuse • Benign vocal cord nodules • Vocal Cord Hemorrhage • Vocal Cord Paralysis and Paresis • Neurologic related • Laryngeal cancer

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