Agranulocytosis associated with semisynthetic penicillins and cephalosporines

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Abstract
Within one year we observed in the same intensive care unit seven severe polytraumatic patients with agranulocytosis (AG) associated with treatment by semisynthetic penicillins or cephalosporines combined with aminoglycosides. Antibiotics were given because of severe bacterial respiratory or generalised infections. Five patients died, four of them without haematological remission. Bone marrow aspirates showed hypoplasia of granulopoiesis due to a lack of mature cells. Leukocyte and granulocyte counts in the blood declined continuously over a period of 8 to 11 days. In average, minimal granulocyte counts occurred after 21 days of hospitalisation and 14 days of antibiotic drug exposure. Beside the incriminated antibiotics all patients were treated sporadically with other agents which may cause AG. Granulocyte kinetics and serial bone marrow examinations of one patient suggest a phenothiazine type of AG, which is caused by a toxic damage of granulopoiesis. Declining absolute granulocyte counts in the blood together with persisting high temperatures during antibiotic treatment should give rise to the suspicion of a beginning AG.

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