RESPIRATORY
CHRONIC OBSTRUCTIVE PULMONARY DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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GOLD 1
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GOLD 2
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GOLD 3
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GOLD 4
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Detailed explanation-1: -The normal value for the FEV1/FVC ratio is 70% (and 65% in persons older than age 65). When compared to the reference value, a lower measured value corresponds to a more severe lung abnormality.
Detailed explanation-2: -Other criteria to consider the bronchodilator response as positive are a post-bronchodilator FEV1 percentage increase greater than 15% of baseline, an increase in post-bronchodilator FEV1 greater than 10% of the predicted value (10) or an absolute 400 ml increase in FEV1 (6).
Detailed explanation-3: -The higher your percentage, the larger your lung capacity and the healthier your lungs. Your doctor will likely diagnose COPD if your FEV1/FVC ratio falls below 70% of the predicted value. You are likely to get a diagnosis of asthma if your ratio falls below 80% of the predicted value.
Detailed explanation-4: -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.