Related Experiment Video
Updated: May 2, 2026
04:04
Asthma Detection Research Based on Voice Signal Processing and Machine Learning
Published on: July 22, 2025
1.2K
A novel scoring system to distinguish vocal cord dysfunction from asthma
Russell S Traister1, Merritt L Fajt1, Douglass Landsittel2
1Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pa.
The Journal of Allergy and Clinical Immunology. in Practice
|February 26, 2014
Summary
The Pittsburgh Vocal Cord Dysfunction Index helps differentiate vocal cord dysfunction from asthma using key symptoms like throat tightness and dysphonia. This validated tool aids in accurate diagnosis and prevents unnecessary asthma medication.
Area of Science:
- Pulmonology
- Otolaryngology
- Diagnostic Medicine
Background:
- Vocal cord dysfunction (VCD) is frequently misdiagnosed as asthma.
- This misdiagnosis leads to increased medication use and healthcare costs.
Purpose of the Study:
- To develop a reliable scoring index to differentiate VCD from asthma.
- To improve diagnostic accuracy and patient management.
Main Methods:
- Compared demographics, comorbidities, symptoms, and triggers in VCD (n=89) and asthma (n=59) cohorts.
- Utilized multivariable logistic regression to identify distinguishing features.
- Developed and validated the Pittsburgh Vocal Cord Dysfunction Index (PVCDI) in an independent sample (n=72).
Main Results:
- Key VCD indicators include throat tightness, dysphonia, absence of wheezing, and odor triggers.
- The PVCDI demonstrated high sensitivity (0.83) and specificity (0.95) at a cutoff of ≥4.
- The index achieved 77.8% diagnostic accuracy in an independent cohort with laryngoscopy-proven VCD.
Conclusions:
- The PVCDI is a simple, valid tool for diagnosing VCD.
- Facilitates timely and accurate diagnosis, preventing misdiagnosis as asthma.
- Further prospective validation in broader populations is recommended.
Keywords:
ANOVAAnalysis of varianceAsthmaBMIBody mass indexCIClinical scoring indexConfidence intervalGERDGastroesophageal refluxIBSIQRInterquartile rangeIrritable bowel syndromeN/ANPVNegative predictive valueNot availableOROdds ratioPPVPositive predictive valueSOBShortness of breathVCDVocal cord dysfunction
Related Concept Videos
01:26Asthma-II: Pathophysiology and Classification
4.7K
Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
4.7K
01:30Asthma-IV: Diagnostic and Management
3.3K
The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
3.3K
01:24Asthma-III: Symptoms and Complications
3.5K
Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
Classification of Asthma
3.5K
01:29Assessment of Ventilation II: Respiratory Depth and Rhythm
2.9K
Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
2.9K
01:13Asthma III: Clinical Manifestations
49
Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...
49
01:28Physical Assessment of the Respiratory Tract IV: Auscultation
3.8K
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.
3.8K