Noninvasively assessed pulmonary artery stiffness predicts mortality in pulmonary arterial hypertension .

C.T. Gan, J.W. Lankhaar, N. Westerhof, J.T. Marcus, A. Becker, J.W.R. Twisk, A. Boonstra, P.E. Postmus, A. Vonk Noordegraaf

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Abstract

Aims: Decreased total compliance of the pulmonary vascular bed is associated with increased mortality in patients with pulmonary arterial hypertension (PAH). We investigated whether proximal pulmonary artery stiffness, in terms of area distensibility and noninvasively assessed relative area change (RAC), calculated as relative cross-sectional area change, predicts mortality in patients with PAH. Methods and results: Eighty-six subjects underwent right-heart catheterization and MRI to assess area distensibility and RAC. Patients were followed up to 48 months. Kaplan-Meier plot and Cox proportional hazards regression analyses assessed the predictive value of area distensibility and RAC. In 70 patients, the diagnosis PAH was confirmed, and 16 subjects served as control subjects. In comparison with control subjects, proximal pulmonary arteries of patients were distended (685 ± 214 mm
Original languageEnglish
Pages (from-to)1906-1912
Number of pages7
JournalChest
Volume132
Issue number6
DOIs
Publication statusPublished - Dec 2007

Keywords

  • Adult
  • Cardiac Catheterization
  • Case-Control Studies
  • Elasticity
  • Female
  • Humans
  • Hypertension, Pulmonary/mortality
  • Least-Squares Analysis
  • Magnetic Resonance Imaging
  • Male
  • Middle Aged
  • Predictive Value of Tests
  • Prognosis
  • Proportional Hazards Models
  • Pulmonary Artery/physiopathology

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