INTERPRETATION ALGORITHMS (DIAGNOSIS)The Spirometry Software SIBELMED W20s includes twotypes of diagnosis available through SETUP - PARAMETERSAND OTHERS - SELECTION.Miller DiagnosisIt presents the following information NORMAL,RESTRICTIVE, OBSTRUCTIVE or COMBINED.Snider, Kory & Lyons DiagnosisIt is based on the following criteria:• If FVC > 80% of FVC Reference and FEV1 > 80% ofFEV1 Reference --> Values in reference range. NormalDiagnosis• If FEV1/FVC% < FEV1/FVC% Reference and FEV1 < 80%of FEV1 Reference --> Ventilatory alteration of Obstructivetype
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