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The ATS/ERS task force has pulled back the permissible accuracy error from ±3% as stated in the 2005 standard to ±2.5% in the 2019 update. Spirohohome spirometers work with ultrasonic flow sensor technology which can easily achieve accuracy readings well below the updated 2019 limit. #spirohome #spirometer #spirometry #asthma #COPD #cysticfibrosis

A post shared by Spirohome (@spirohome) on Nov 1, 2019 at 7:16am PDT

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Previously, the end of the forced expiration phase of the FVC test was referred to as ‘End of Test’ or shortly, ‘EOT’. However, a maximal inspiration following the forced expiration which, in fact, denotes the end of the FVC test. Therefore, the term EOT will now be replaced by End of Forced Expiration or ‘EOFE’ to reflect this clarification. #spirohome #spirometer #spirometry

A post shared by Spirohome (@spirohome) on Nov 8, 2019 at 5:40am PST

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Previously, the ATS/ERS defined the end of forced expiration as the achievement of a plateau reached after at least 6 seconds of forced expiration (subjects age > 10 years). Now, the end of forced expiration is signified by achieving one of the following three: 1) There is less than a 0.025-L change in volume for at least 1 second (a “plateau”) or 2) the patient has achieved an FET of 15 seconds or 3) the patient cannot expire long enough to achieve a plateau but can repeatedly achieve the same FVC. For further details please refer to the Standardization of Spirometry 2019 Update. #spirohome #spirometer #spirometry

A post shared by Spirohome (@spirohome) on Nov 13, 2019 at 11:18am PST

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According to the new 2019 ATS/ERS guidelines, spirometers must comply with ISO26782 Anaesthetic and respiratory equipment — Spirometers intended for the measurement of time forced expired volumes in humans. However, compliance is notwithstanding the accuracy, linearity, and repeatability limits for spirometers expressed in ISO26782, as ATS/ERS limits are now ±2.5%. Also, it’s now not permissible to recalibrate a spirometer between the individual test profiles of Annex C of ISO26782. #spirohome #spirometer

A post shared by Spirohome (@spirohome) on Nov 19, 2019 at 6:23am PST

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The updated guideline states that spirometer systems must provide explicit feedback to the operator for cases such as when a plateau has been reached during forced expiration, when forced expiratory time (FET) reaches 15 seconds, if the elapsed time is less than the wait time for the bronchodilator effect, when end of forced expiration (EOFE) criteria has been reached and regarding FEV1 and FVC acceptability, amongst others. #spirohome #spirometry

A post shared by Spirohome (@spirohome) on Nov 29, 2019 at 1:33am PST