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[Investigation of the c. s. fluid levels of two newer antibiotics; cefazolin and sisomicin (author's transl)].

In ten patients continuous estimations of the C.S.F. and serum levels were performed after the administration of a Cephalosporin derivative (Cefazolin - 4 cases) and a new alpha-amino-glycoside antibiotic (Sisomicin - 6 cases). After the evaluation of the results some doubts must be cast on the value of both these antibiotics for the treatment of meningitis or for per-operative chemo-prophylaxis in neurosurgical procedures. The values found were compared with those well-known in the literature, regarding the cephalosporins and the alpha-amino-glycoside Gentamycin.