[Gram-negative bacterial lung diseases in an internal medicine department].
In a department of internal medicine in Paris, the pneumonopathies with Gram negative "wild" bacilli represent about the third of recognized bacterial pneumonopathies. If started before the results of bacterial tests are known, the treatment should always include a drug active on Gram negative bacteria. Together with KLASTERSKY (1972) we think that synergic associations including the use of Gentamicin are the most effective. Once the responsible germ isolated and its sensitivity to antibiotics determined, therapy can be modified accordingly. With an appropriate antibiotic and by treating an unfavourable background and the initial localization, prognosis is favourable in most cases. This contrasts with the heavy mortality of pulmonary infections with Gram negative bacilli pertaining to hospital.