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Concave Pattern of a Maximal Expiratory Flow-Volume Curve: A Sign of Airflow Limitation in Adult Bronchial Asthma
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Spirometry: Dynamic Lung Volumes - Interpretation of Pulmonary Function Tests A Practical Guide, 3. ed
Nick Mark MD on Twitter: "@ArmanAShahriar Yes!! Great catch. The normal FEF50/FIF50 is a little less than 1. A low FEF50/FIF50 ratio (<~0.5) can suggest a variable extrathoracic obstruction. An increased ratio (
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Figure 1 from Improved spirometric detection of small airway narrowing: concavity in the expiratory flow–volume curve in people aged over 40 years | Semantic Scholar
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area under the forced expiratory FVl is determined by integrating all... | Download Scientific Diagram
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Sensors | Free Full-Text | High-Resolution Time-Frequency Spectrum-Based Lung Function Test from a Smartphone Microphone
Nick Mark MD on Twitter: "@ArmanAShahriar Yes!! Great catch. The normal FEF50/FIF50 is a little less than 1. A low FEF50/FIF50 ratio (<~0.5) can suggest a variable extrathoracic obstruction. An increased ratio (
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