RESPIRATORY
PULMONOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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asthma
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COPD
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Interstitial lung disease
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Skeletal/muscular disease of the chest
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Detailed explanation-1: -The Global Initiative for Asthma (GINA) defines asthma by combining variable respiratory symptoms with variable expiratory airflow limitation, expressed as an FEV1/FVC ratio less than 75-80% (7).
Detailed explanation-2: -FEV1 greater than 80% of predicted = normal. FEV1 65% to 79% of predicted = mild obstruction. FEV1 50% to 64% of predicted = moderate obstruction. FEV1 less than 50% of predicted = severe obstruction.
Detailed explanation-3: -This is a measure of how quickly the lungs can be emptied. • FEV1/FVC: FEV1 expressed as a percentage of the FVC, gives a clinically. useful index of airflow limitation. The ratio FEV1/FVC is between 70% and 80% in normal adults; a value less than 70% indicates airflow limitation and the possibility of COPD.