PubMed · 5223784
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1966. Case study: fat embolism.. https://pubmed.ncbi.nlm.nih.gov/5223784/
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To evaluate the value of automated semiquantitative analysis of fat within alveolar macrophages as an early diagnostic tool for fat embolism syndrome (FES), we investigated 3 patients with respiratory failure following long-bone fractures. The mean area of fat droplets per alveolar macrophage was determined in pixels and, additionally, the percentage of the evaluated areas was calculated. In 2 patients, the diagnosis of FES could be established as early as 24 hr after trauma. Both patients showed an increase in the area of fat per alveolar macrophage (pixels: 851, 1069) as well as in the percentage of fat area per alveolar macrophage area (40.04%, 52.73%), whereas the analysis of the bronchoalveolar lavage (BAL) specimens of a third patient, who later recovered without appearance of clinical signs of FES, revealed only minimal fat content (pixels: 82; 3.82%). Automated semiquantitative analysis of fat within alveolar macrophages may be helpful in the early diagnosis of FES.
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