RESPIRATORY
CHRONIC OBSTRUCTIVE PULMONARY DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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First, the diagnosis should be determined based on clinical, medical history, lung function, imaging, laboratory data, etc.
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According to FEV1 to assess the severity of airway obstruction, FEV1 = 79% is mild obstruction
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Assess severity of symptoms and risk of acute exacerbation based on:CAT, mMRC, and history of exacerbations
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If wheezing during strenuous exercise, mMRC = 0
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Detailed explanation-1: -Forced expiratory volume (FEV1) is a measurement taken from a pulmonary function test. It calculates the amount of air that a person can force out of their lungs in 1 second. Working out a person’s FEV1 value can help diagnose chronic lung diseases, such as chronic obstructive pulmonary disease (COPD).
Detailed explanation-2: -In pulmonary function testing, a postbronchodilator FEV1/FVC ratio of <0.70 is commonly considered diagnostic for COPD. The Global Initiative for Chronic Obstructive Lung Disease (GOLD) system categorizes airflow limitation into stages. In patients with FEV1/FVC <0.70: GOLD 1-mild: FEV1 ≥80% predicted.
Detailed explanation-3: -FEV1 helps measure the progression of lung conditions such as chronic obstructive pulmonary disease (COPD) or asthma. FEV stands for forced expiratory volume, which is the air you exhale in 1 second. A low FEV1 suggests a breathing obstruction. Having trouble breathing is a hallmark symptom of COPD.
Detailed explanation-4: -The global initiative for chronic obstructive lung disease (GOLD) guidelines, first published in 2001 and thereafter updated annually, define COPD by a post-bronchodilator FEV1/FVC ratio below 0.70.