Obstructive-COPD or COPDstructive <80% FEV1/FVC
Restricive---ARDS or A-ReDStrictive >80% FEV1/FVC
O is before R in the alphabet, and Obstructive is <80%
Restrictive is > 80%
Check this COPD video: http://allergy.health.ivillage.com/allergyasthmabasics/bronchoprovocationtest.cfm
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