Differences between absolute and predicted values of forced expiratory volumes to classify ventilatory impairment in chronic obstructive pulmonary disease
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- 作者：William Checkleya ; b ; wcheckl1@jhmi.edu" class="auth_mail" title="E-mail the corresponding author ; Marilyn G. Foremanc ; Surya P. Bhattd ; Mark T. Dransfieldd ; MeiLan Hane ; Nicola A. Hananiaf ; Nadia N. Hansela ; Elizabeth A. Regang ; Robert A. Wisea ; COPDGene Study Investigators
- 关键词：COPD ; Reference equations ; Severity criteria
- 刊名：Respiratory Medicine
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：111
- 期：Complete
- 页码：30-38
- 全文大小：1549 K
文摘
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Evidence before this study: Severity criteria for COPD based on % predicted or Z-scores are widely used.
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Added value of this study: We propose two alternative severity criteria based on absolute FEV1 values.
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Implications of all the available evidence: Absolute FEV1 is an alternative to % predicted or Z-scores to measure severity.