Article Text

PDF

Abnormal distribution of pulmonary blood flow in aortic valve disease
  1. Lucy S. Goodenday1,
  2. George Simon,
  3. Hazel Craig,
  4. Lola Dalby
  1. Institute of Cardiology, University of London, 35 Wimpole Street, London W.1

    Relation between pulmonary function and chest radiograph

    Abstract

    Wasted ventilatory volume (VD) and its ratio to tidal volume (VD/VT) were measured at rest and during exertion in 17 patients with aortic valve disease. We considered VD/VT to indicate abnormal ventilation: perfusion relations if it did not decrease on exertion, or if the exercising value was greater than 40 per cent. Plain chest radiographs were independently examined for evidence of diversion of pulmonary blood to the upper lobes. There was significant agreement (p<0·05) between radiographic and pulmonary function estimations of abnormality. This suggests that the raised pulmonary venous pressure associated with left ventricular failure creates an abnormal pattern of blood flow through the lung, which is responsible for causing inadequate perfusion with respect to ventilation.

    Statistics from Altmetric.com

    Footnotes

    • 1 Present address: 571-M Cardiovascular Division, University of California Medical Center, San Francisco, California, 94122, U.S.A.

    Request permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.