We read the recent article by Johannessen and colleagues (1) with interest in that they suggest the lower limit of normal (LLN) for FEV 1 expressed as a percent of FVC (FEV 1 %) is above …

2023年3月3日 · FEV1 is measured during a spirometry test, also known as a pulmonary function test, which involves forcefully breathing out into a mouthpiece connected to a spirometer …

Rationale: A positive bronchodilator response (BDR) according to American Thoracic Society/European Respiratory Society (ATS/ERS) guidelines require both 200 ml and 12% …

2020年3月15日 · The ATS/ERS guidelines define significant reversibility as an increase in FEV 1 or FVC of more than 12% and 0.2 L in adults, or more than 12% in children and adolescents …

2013年8月14日 · Significant bronchodilator responsiveness was assessed using American Thoracic Society and European Respiratory Society (ATS-ERS) criterion based on FEV1 …

In the 2021 ERS/ATS interpretive strategies for routine lung function tests, a positive bronchodilator response (BDR) was updated as a change of >10% relative to the predicted …

2014年7月9日 · 当哮喘的诊断得到证实、合并症得到诊治后，重度哮喘的定义为“需要大剂量ICS另加一种控制药物 [和（或）全身激素]以防止其变成未控制哮喘，或在该治疗下仍表现为未控制 …

ATS/ERS Pulmonary Function Acceptability & Repeatability Guidelines Forced Vital Capacity Diffusing Capacity ACCEPTABILITY 1. Inspired volume should be ≥90% of largest Vital …

the American Thoracic Society (ATS) interpret-ative strategies document [5]. An interpretation begins with a review and comment on test quality. Tests that are less than optimal may still …

Look at the FEV1% ratio first if obstruction is suspected. If the FEV1% ratio is lower than expected (the lower limit of normal), obstruction is present. If the ratio is normal or elevated, check the …