Clinical significance of radiologic characterizations in COPD.

COPD
MeiLan K HanFernando J Martinez

Abstract

COPD is a heterogeneous disorder with clinical assessment becoming increasingly multidimensional. We hypothesized HRCT phenotype would strongly influence clinical outcomes including health status, exacerbation frequency, and BODE. COPD subjects were characterized via the SF-12, SGRQ, MMRC, physiologic testing, and standardized volumetric chest HRCT. Visual semi-quantitative estimation of bronchial wall thickness (VBT) and automated quantification of emphysema percent and bronchial wall thickness were generated. Multivariate modeling compared emphysema severity and airway abnormality with clinical outcome measures. Poisson models were used to analyze exacerbation frequency. SGRQ and SF-12 physical component scores were influenced by FEV(1)% predicted, emphysema percent, and VBT. VBT scores > 2 (scale 0-48) were associated with increased exacerbation frequency (p = 0.009) in the preceding year adjusting for age, gender, emphysema percent, smoking history and FEV(1)% predicted, although this effect was attenuated by age. Emphysema percent correlated with total BODE score in unadjusted (r = 0.73; p < 0.0001) and adjusted (p < 0.0001) analyses and with BODE individual components. HRCT provides unique COPD phenotyping information. Ra...Continue Reading

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Citations

Jan 5, 2013·Current Opinion in Pulmonary Medicine·Shannon A Novosad, Alan F Barker
Jun 5, 2010·American Journal of Respiratory and Critical Care Medicine·MeiLan K HanFernando J Martinez
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