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Review age, gender, smoking status, BMI, indication, flow-volume curves. Quality control. Three acceptable maneuvers with repeatable values: Two highest values of FVC and FEV1 should be within 150mL (100mL if FVC ≤ 1L)
Interpreting results. Best of 3 consistent readings (FEV1 & FVC) Borderline normal results - repeat in few months to confirm diagnosis (especially > 75 years) Abnormality detected if any of following recorded: FEV1 <80% predicted normal. FVC <80% predicted normal.
measures the volume of air that the patient is able to expel from the lungs after maximal inspiration. Spirometry is invaluable as a screening test of general respiratory health, similar to
5 Ιουν 2012 · In this article we will provide an overview of basic pulmonary function tests and an algo-rithm for using and interpreting them, and then we use three cases to explain how to use these tests to identify the pattern of respirato-ry dysfunction, then make the diagnosis.
Describe the clinical indications for pulmonary function testing. Understand the physiology of the core pulmonary function tests: spirometry, lung volumes and DLCO. Apply an organized approach to interpreting pulmonary function tests. Identify obstructive, restrictive, mixed obstructive-restrictive and pulmonary vascular patterns of ...
If FVC < LLN (or < 80%) predicted, consider hyperinflation/gas trapping. If post-BD FVC remains < LLN (or < 80%) predicted, consider combined obstructive and restrictive defect and full PFT. Note: Recommended reference equations: GLI, CHMS, and NHANES III. 2018 Ontario Lung Association.
SPIROMETRY IMPLEMENTATION QUICK GLANCE GUIDE. Spirometry: A measure of airflow (how fast) and volume (how much) Forced Vital Capacity (FVC): The volume delivered during an expiration made as forcefully and completely as possible starting from full inspiration.
