Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
Medical History

Assessment of Ventilation II: Respiratory Depth and Rhythm

Assessment of Ventilation II: Respiratory Depth and Rhythm

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:

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:

COPD: Management Using Bronchodilators and Corticosteroids

COPD: Management Using Bronchodilators and Corticosteroids

Chronic obstructive pulmonary isease (COPD) involves a group of progressive lung disorders characterized by persistent airflow limitation and chronic respiratory symptoms. Asthma-COPD Overlap Syndrome (ACOS), encompassing features of both asthma and Chronic obstructive pulmonary disease (COPD), is a group of progressive lung disorders that includes chronic bronchitis, emphysema, and refractory (non-reversible) asthma. ACOS leads to complex clinical presentations that combine the inflammatory...

Pulmonary Function Tests

Pulmonary 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...

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

<i>Mycobacterium toneyamaense</i> sp. nov., a novel rapidly growing mycobacterium isolated from human patients.

International journal of systematic and evolutionary microbiology·2026

Same author

Affinity- and epitope-dependent pathogenicity of GM-CSF autoantibodies in patients with autoimmune pulmonary alveolar proteinosis.

Nature communications·2026

Same author

Reply to Rojas-Ponce, "Operational considerations for implementing culture-free mycobacterial sequencing in routine laboratory settings".

Journal of clinical microbiology·2026

Same author

Prognostic impact of rheumatoid arthritis on respiratory-related mortality in non-tuberculous mycobacterial pulmonary disease.

RMD open·2026

Same author

Distinct fibrosis-associated macrophage subsets coordinate iron metabolism in pulmonary fibrosis.

International immunology·2026

Same author

Understanding and controlling pandemic influenza.

Proceedings of the Japan Academy. Series B, Physical and biological sciences·2026

Search research articles

Related Experiment Video

Updated: Dec 5, 2025

Conducting Respiratory Oscillometry in an Outpatient Setting

Conducting Respiratory Oscillometry in an Outpatient Setting

Published on: April 8, 2022

Evaluation of disease severity in bronchiectasis using impulse oscillometry.

Yuji Yamamoto¹, Keisuke Miki¹, Kazuyuki Tsujino¹

¹Dept of Respiratory Medicine, National Hospital Organization Osaka Toneyama Medical Center, Toyonaka, Japan.

ERJ Open Research

|October 21, 2020

Summary

Impulse oscillometry (IOS) can predict bronchiectasis severity, with inspiratory resonant frequency being the most useful predictor. This method is effective for patients with or without nontuberculous mycobacteria (NTM) infection.

More Related Videos

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults

Published on: February 9, 2022

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Published on: September 6, 2024

Related Experiment Videos

Last Updated: Dec 5, 2025

Conducting Respiratory Oscillometry in an Outpatient Setting

Conducting Respiratory Oscillometry in an Outpatient Setting

Published on: April 8, 2022

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults

Published on: February 9, 2022

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit

Published on: September 6, 2024

Area of Science:

Respiratory Medicine
Pulmonary Diagnostics
Medical Imaging

Background:

Impulse oscillometry (IOS) diagnostic value in bronchiectasis is known, but its parameters for predicting disease severity require further investigation.
The utility of IOS in nontuberculous mycobacteria (NTM) infected bronchiectasis patients remains unreported.

Purpose of the Study:

To determine the predictive significance of respiratory impedance and identify key IOS parameters for bronchiectasis severity.
To validate the usefulness of IOS in patients with NTM infection.

Main Methods:

206 bronchiectasis patients underwent chest high-resolution computed tomography, spirometry, and IOS.
Disease severity assessed using Bronchiectasis Severity Index (BSI), FACED, and E-FACED scores, hospital admissions, and mortality.
Subgroup analysis performed for patients with and without NTM infection.

Main Results:

Inspiratory reactance, particularly resonant frequency (f _res), correlated better with BSI and FACED scores than respiratory resistance.
Inspiratory impedance strongly correlated with BSI, FACED, and E-FACED scores.
Inspiratory f _res emerged as the most potent predictor of disease severity, increasing with severity, and IOS utility was similar in NTM-infected and non-infected groups.

Conclusions:

Inspiratory reactance measured by IOS is a valuable tool for estimating bronchiectasis severity.
Inspiratory f _res is the optimal IOS parameter for predicting disease severity in bronchiectasis patients, irrespective of NTM infection status.