To continue our in-depth analysis of the new spirometry standard, in today's article, we will focus on part 2 of the series:
Harmonization with ISO 26782
FVC maneuver with maximal inspiration and end of test criteria
The new quality grading system
New criteria for slow VC maneuver and bronchodilator responsiveness testing
Newly required usability features
Flow-Volume Loop (FVL) becomes the standardized test procedure to obtain FEV1 and FVC
Upon completing forced expiration, the patient should rapidly inspire to full inflation. As opposed to FVC, measurements of forced inspiration VC (FIVC) provide extra information on maneuver quality. ndd products already support this test procedure.
Minimum of 6s expiration no longer required
Meeting the plateau criterion alone is now sufficient to obtain a satisfactory end of forced expiration (EOFE). Besides the plateau criterion, the new standard also specifies two additional independent indicators for an acceptable EOFE: a forced expiratory time (FET) of 15s, or repeatedly achieving the same FVC within the repeatability tolerance.
EasyOne Connect (v3.05.01.07 or higher) already allows not enforcing the minimum 6s expiration criterion.
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