During spirometry, the patient is asked to perform various breathing maneuvers, from which a graphical output of the respired volume against time is presented as a curve. This curve is termed a volume-time curve. Two values are measured during this process: the maximum forced expiratory volume of air expired within one second after maximal inspiration, FEV1, and the maximum volume of air forcibly expired after maximal inspiration, the forced vital capacity, in short, FVC.
Outline:
00:00 - Introduction
01:22 - Measurement method
03:20 - Lunge volume
10:04 - Airflow
12:06 - Summary
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Spirometry: Procedure and Results
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AMBOSS medmedical schoolmedicinemedical studentAMBOSSclinical skillsclinical examinationStep 2 CSStep 2 CKUSMLE Step 1USMLE Step 2usmleshelf examMCATUWorldLecturioOsmosismededpulmonary function testingspirometryFEV1FVCCOVID-19chalk talkpulmonary fibrosisvolume-time curveflow-volume loopinspiratory vital capacityIVCforced vital capacityresidual volumeforced expiratory flowFEFPEFFEF25%FEF50%FEF75%peak expiratory flow
