title: [Acute neutropenia in adult severe bacterial infections. Six cases (author's transl)].
abstract: A transient neutropenia (duration : less than 48 hours) occurred in 6 patients with severe bacterial infections. The bone marrow myeloïd cellularity was high or normal; a maturation arrest of the myeloïd cells - at a variable stage - was present in each case, as well as circulating granulocyte precursors. Other causes of neutropenia were excluded. A general survey of the literature is made and the mechanisms of this bacterial neutropenia are considered : bone marrow failure seems mostly improbable ; the few previously reported cases, the experimental bacterial neutropenias, the peculiar, transient, evolution we observed, all favor a peripheral mechanism ; the bacterial infection seems to act by; two ways : in septicemia (especially during septic shock) by enhancing leucocyte margination along vascular walls ; in large septic foci (mostly pulmonary) by an important destruction of polymorphonuclear neutrophils. Such bacterial infections share a bad prognosis but the neutropenia itself needs no specific treatment.
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D000380:Agranulocytosis / Q000209:etiology*; D001424:Bacterial Infections / Q000150:complications*; D004927:Escherichia coli Infections / Q000150:complications; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009016:Moraxella; D009503:Neutropenia / Q000175:diagnosis / Q000209:etiology*; D013203:Staphylococcal Infections / Q000150:complications
vernacular_title: Neutropénies aiguës au cours d'infections bactériennes graves chez l'adulte. A propos de 6 cas.