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Related Concept Videos

Larynx01:21

Larynx

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The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
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Respiratory System Abnormal Finding II: Palpation and Auscultation01:31

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In assessing respiratory abnormalities, palpation and auscultation are critical tools for detecting and interpreting various pathophysiological changes. These techniques provide insight into underlying disorders by evaluating tactile sensations and sounds produced by the respiratory system.
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Tracheostomy Suctioning II: Procedure01:23

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Tracheostomy suctioning is a vital nursing procedure that involves removing secretions from the tracheostomy tube to maintain airway patency and prevent respiratory complications. Nurses need to understand the proper technique for tracheostomy suctioning to ensure patient safety and comfort. In this guide, we will outline the step-by-step process for performing tracheostomy suctioning, including preparing the sterile field, donning personal protective equipment (PPE), lubricating and connecting...
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Tracheostomy Care II: Procedure01:25

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Tracheostomy care is an essential nursing skill that involves cleaning and maintaining a tracheostomy tube to prevent infection and other complications. Here's a step-by-step guide explaining each procedure with its rationale. Note that disposable gloves are to be worn at all times and changed as often as needed to maintain a sterile work environment, and to protect both patient and healthcare worker.
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Tracheostomy Decannulation01:21

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Tracheostomy decannulation is a significant milestone in the liberation of mechanically ventilated patients. Despite its importance, there is no universally accepted protocol for this procedure. This demands an evidence-based, individualized approach.
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Tracheostomy Suctioning I: Pre-Procedural Steps01:26

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Tracheostomy suctioning is a critical procedure healthcare professionals perform to maintain a patent airway in patients with a tracheostomy tube. This procedure is necessary when secretions accumulate in the airway, causing respiratory distress. Here is a step-wise procedural guide for performing tracheostomy suctioning using an open system.
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Related Experiment Video

Updated: Apr 11, 2026

Construction and Characterization of a Novel Vocal Fold Bioreactor
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Construction and Characterization of a Novel Vocal Fold Bioreactor

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Vocal Fold Vibratory Changes Following Surgical Intervention.

Wenli Chen1, Peak Woo2, Thomas Murry3

  • 1Department of Rehabilitation, NYU Lutheran Medical Center, Brooklyn, New York.

Journal of Voice : Official Journal of the Voice Foundation
|June 2, 2015
PubMed
Summary

High-speed videoendoscopy (HSV) revealed significant improvements in vocal fold vibration after phonosurgery. Spectral analysis showed increased vibratory power and symmetry, enhancing vocal fold function.

Keywords:
High-speed videoendoscopyPhonosurgerySpectrumVocal fold vibration

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Last Updated: Apr 11, 2026

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Area of Science:

  • Laryngology
  • Speech Science
  • Medical Imaging

Background:

  • Vocal fold vibration analysis is crucial for diagnosing and treating voice disorders.
  • High-speed videoendoscopy (HSV) offers real-time, cycle-to-cycle visualization of vocal fold dynamics.
  • Assessing vibratory changes post-surgery is essential for treatment efficacy.

Purpose of the Study:

  • To investigate vocal fold vibratory motion before and after phonosurgery.
  • To quantify changes in vocal fold vibration using spectral analysis.
  • To correlate objective vibratory measures with subjective voice outcomes.

Main Methods:

  • High-speed videoendoscopy (HSV) was employed to capture vocal fold movements.
  • Digital kymography (DKG) extracted kymographic images from HSV recordings.
  • Spectral analysis quantified cycle-to-cycle vocal fold movements and power asymmetry.

Main Results:

  • Pre-intervention spectra showed decreased, flat-like peaks and significant power asymmetry.
  • Post-intervention spectra revealed increased spectral power and improved power symmetry.
  • Spectral power increases were most prominent in the midmembranous vocal fold region.

Conclusions:

  • Phonosurgery led to improved lateral excursion, vibratory function, and Voice Handicap Index-10 scores.
  • Objective vibratory measures showed a trend towards normalization post-surgery.
  • HSV and spectral analysis provide valuable insights into surgical outcomes for voice disorders.