title: [Röntgen appearances of pulmonary edema and their clinical and physiologic correlates (author's transl)].
abstract: With the rapid increase in the number of intensive care units in surgical and medical departments knowledge of early radiologic signs of pulmonary edema gains in importance. On the basis of investigations by American authors typical changes in the distribution of pulmonary blood supply can be shown, in good correlation with pressure changes in the pulmonary vein in left heart failure. When pressure rises in the pulmonary vein the well-know changes of interstitial or alveolar (acinary) pulmonary edema arise. Differential diagnosis between pulmonary edema due to left heart failure and edema from other causes is aided on the one hand by the presence of interstitial pulmonary edema and redistribution of blood, on the other hand by the abnormaly large heart and configuration. Neither Röntgen appearances nor type of distribution of pulmonary edema are specific for any given cause. In all cases of pulmonary edema, the primary-peripheral excepted, clinical signs either occur later than X ray findings or will be absent altogether. Respiratory physiology permits, according to the severity of the edema, proof of hypoxemia with pronounced differences in the regional ventilation-perfusion quotient up to marked reduction of compliance and increase of resistance.
mesh_terms: D006333:Heart Failure / Q000150:complications; D006801:Humans; D000860:Hypoxia / Q000150:complications; D011654:Pulmonary Edema / Q000000981:diagnostic imaging* / Q000209:etiology; D011667:Pulmonary Veins / Q000000981:diagnostic imaging; D011859:Radiography
vernacular_title: Die Röntgenmorphologie des Lungenödems und sein klinisches und atemphysiologisches Korrelat