Related Experiment Video
Updated: May 9, 2025
14:49
Conducting Respiratory Oscillometry in an Outpatient Setting
Published on: April 8, 2022
6.7K
Detection of Inadequately Controlled Asthma in Adults Using Impulse Oscillometry and Fractional Exhaled Nitric Oxide
Xuwen Yang1, Meishan Liu1, Honglei Shi1
1Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, People's Republic of China.
Journal of Asthma and Allergy
|May 1, 2025
Summary
Impulse oscillometry (IOS) and fractional expiratory nitric oxide (FeNO) can help identify inadequately controlled asthma (ICA) in adults. Combining these tests improves accuracy in distinguishing ICA from well-controlled asthma (WCA).
Area of Science:
- Pulmonary Medicine
- Respiratory Physiology
- Diagnostic Tools
Background:
- Asthma control assessment is crucial for effective patient management.
- Distinguishing between inadequately controlled asthma (ICA) and well-controlled asthma (WCA) can be challenging with standard methods.
- Impulse oscillometry (IOS) and fractional expiratory nitric oxide (FeNO) are emerging tools for respiratory assessment.
Purpose of the Study:
- To evaluate the efficacy of impulse oscillometry (IOS) in differentiating adult patients with inadequately controlled asthma (ICA) from those with well-controlled asthma (WCA).
- To assess the added value of combining IOS with fractional expiratory nitric oxide (FeNO) measurements for improved asthma control discrimination.
Main Methods:
- Adult asthma patients (aged ≥18) underwent spirometry, FeNO, and IOS before and after bronchodilation.
- Asthma control was determined using Asthma Control Test (ACT) scores (WCA > 20; ICA ≤ 20).
- Receiver operating characteristic (ROC) curve and logistic regression analyses were used to analyze IOS and FeNO data in relation to asthma control.
Main Results:
- Specific IOS parameters (R5, R20, AX) post-bronchodilation showed significant differences between WCA and ICA groups.
- IOS parameters alone demonstrated moderate accuracy in identifying ICA (AUCs 0.654-0.708).
- Combining IOS parameters with FeNO significantly enhanced the accuracy for detecting ICA (AUCs 0.728-0.763).
- Abnormal IOS and FeNO values, particularly elevated AX, were associated with significantly higher odds of ICA (OR 6.48).
Conclusions:
- Impulse oscillometry (IOS) is a valuable tool for distinguishing between inadequately controlled asthma (ICA) and well-controlled asthma (WCA) in adults.
- The diagnostic performance of IOS in assessing asthma control is significantly improved when combined with fractional expiratory nitric oxide (FeNO) measurements.
Related Concept Videos
01:30Asthma-IV: Diagnostic and Management
2.5K
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:
2.5K
01:19Respiratory Assessment: Purpose and Indications
962
Respiratory assessment is a cornerstone of nursing assessments, crucial for the early detection of patient deterioration. This evaluation transcends routine procedures, representing a critical skill nurses must master to ensure optimal patient care.
Objectives and Importance:
The primary goal of respiratory assessment is to evaluate patients at early risk of clinical deterioration. Since respiratory distress often precedes other signs of declining health, breathing patterns and sounds become a...
Objectives and Importance:
The primary goal of respiratory assessment is to evaluate patients at early risk of clinical deterioration. Since respiratory distress often precedes other signs of declining health, breathing patterns and sounds become a...
962
01:27Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
2.4K
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
Medical History
2.4K
01:19Special considerations while measuring oxygen saturation
522
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
522
01:23Inhaled Medications
196
Inhaled medications are crucial for managing chronic obstructive pulmonary disease (COPD) and asthma. They are essential for effective treatment and control, ensuring optimal respiratory health and well-being. Inhaled medication delivers drugs directly to the lungs, providing a rapid onset of action and reducing systemic side effects compared to oral or injectable medications. Three primary types of inhalation devices are used to administer these medications: nebulizers, metered-dose inhalers...
196
01:23Assessment of Respiration
1.0K
The respiratory system's basic structures and primary functions lay the foundation for nurses' comprehensive respiratory assessments. This assessment includes subjective and objective data to gauge the patient's respiratory health.
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
1.0K