Related Experiment Video
Updated: May 19, 2026
09:58
Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
Published on: February 3, 2014
[Spirometry patterns in vocal cord dysfunction]
V Sanz Santiago1, A López Neyra, E Almería Gil
1Sección de Neumología, Hospital Infantil Niño Jesús, Madrid, España. veross81@yahoo.es
Anales De Pediatria (Barcelona, Spain : 2003)
|August 14, 2012
Summary
Vocal cord dysfunction (VCD) often shows inspiratory plateau on spirometry, but expiratory plateaus are also common. This finding challenges the typical diagnostic ratio used for VCD.
Area of Science:
- Pulmonology
- Laryngology
Context:
- Vocal cord dysfunction (VCD) is a rare condition causing breathing difficulties due to paradoxical vocal cord closure.
- Traditional spirometry interpretation for VCD focuses on inspiratory patterns.
Purpose:
- To determine common spirometry characteristics in VCD patients.
- To describe clinical, demographic, and treatment aspects of diagnosed VCD cases.
Summary:
- A retrospective study of 11 VCD patients confirmed that all exhibited inspiratory plateaus on spirometry.
- A significant majority (81%) also showed expiratory plateaus, impacting the utility of the MEF50%/MIF50% ratio.
Impact:
- Findings suggest that spirometry in VCD is not limited to inspiratory changes.
- The frequent presence of expiratory plateaus may necessitate revising diagnostic criteria for VCD.
Related Concept Videos
01:25Pulmonary Function Tests
Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
01:28Physical Assessment of the Respiratory Tract IV: Auscultation
Auscultation is a crucial component of the physical assessment of the respiratory tract. It offers valuable insights into airflow through the bronchial tree and potential lung obstructions. This process involves careful listening to breath, voice, and adventitious sounds, which can reveal a wealth of information about a patient's respiratory health.
Breath Sounds
Breath sounds are categorized into vesicular, bronchovesicular, and bronchial.
Breath Sounds
Breath sounds are categorized into vesicular, bronchovesicular, and bronchial.
01:31Respiratory System Abnormal Finding II: Palpation and Auscultation
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.
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
01:27Physical Assessment of the Respiratory Tract II: Inspection
Physical assessment of the respiratory tract through inspection is a crucial step in understanding the patient's respiratory health. It provides insights into the functioning of the respiratory system, the musculoskeletal structure, and even the patient's nutritional status. This comprehensive approach involves observing several vital aspects: chest configuration, breathing patterns, respiratory rates, skin color, and use of accessory muscles.
Chest Configuration
The chest configuration can...
Chest Configuration
The chest configuration can...
01:30Respiratory System Abnormal Finding I: Inspection and Percussion
Respiratory system abnormalities are a significant concern in healthcare due to their potential to indicate underlying severe conditions like Chronic Obstructive Pulmonary Disease (COPD), asthma, and pneumonia. These abnormalities can often be detected through physical examination methods like inspection and percussion.
Inspection Findings
During an inspection, several findings may suggest the presence of respiratory distress or disease. Pursed-lip breathing, where exhalation is slowed by...
Inspection Findings
During an inspection, several findings may suggest the presence of respiratory distress or disease. Pursed-lip breathing, where exhalation is slowed by...
01:29Physical Assessment of the Respiratory Tract III: Percussion
The respiratory system, fundamental to life, consists of complex structures responsible for gas exchange. The percussion assessment is critical to understanding this system's health and functionality. This non-invasive assessment technique allows healthcare providers to evaluate the density or aeration of the lungs, thereby identifying potential abnormalities.
Percussion in Respiratory Assessment
Percussion evaluates underlying tissue composition with audible and tactile vibrations,...
Percussion in Respiratory Assessment
Percussion evaluates underlying tissue composition with audible and tactile vibrations,...