Likelihood of pulmonary hypertension in patients with idiopathic pulmonary fibrosis and emphysema

Joseph Jacob, Brian J. Bartholmai, Srinivasan Rajagopalan, Ronald Karwoski, Arjun Nair, Simon L.F. Walsh, Joseph Barnett, Gary Cross, Eoin P. Judge, Maria Kokosi, Elisabetta Renzoni, Toby M. Maher, Athol U. Wells

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Background and objective: This study evaluated whether patients with combined pulmonary fibrosis and emphysema (CPFE) have an increased likelihood of pulmonary hypertension (PHT) when compared with idiopathic pulmonary fibrosis (IPF) patients without emphysema. Methods: Two consecutive IPF populations having undergone transthoracic echocardiography were examined (n = 223 and n = 162). Emphysema and interstitial lung disease (ILD) extent were quantified visually; ILD extent was also quantified by a software tool, CALIPER. Echocardiographic criteria categorized PHT risk. Results: The prevalence of an increased PHT likelihood was 29% and 31% in each CPFE cohort. Survival at 12 months was 60% across both CPFE cohorts with no significantly worsened outcome identified when compared with IPF patients without emphysema. Using logistic regression models in both cohorts, total computed tomography (CT) disease extent (ILD and emphysema) predicted the likelihood of PHT. After adjustment for total disease extent, CPFE had no stronger association with PHT likelihood than IPF patients without emphysema. Conclusion: Our findings indicate that the reported association between CPFE and PHT is explained by the summed baseline CT extents of ILD and emphysema. Once baseline severity is taken into account, CPFE is not selectively associated with a malignant microvascular phenotype, when compared with IPF patients without emphysema.

Original languageEnglish (US)
Pages (from-to)593-599
Number of pages7
JournalRespirology
Volume23
Issue number6
DOIs
StatePublished - Jun 2018

Keywords

  • computer tomography
  • emphysema
  • idiopathic pulmonary fibrosis
  • pulmonary hypertension

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

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