[Preventive chemotherapy of intrapulmonary residual tuberculosis with isoniazid--example of failed compliance by the physician].

Compliance with the recommendations of the Swiss Society for Tuberculosis and Lung Diseases regarding the treatment of patients with fibrotic pulmonary lesions with isoniazid was evaluated over the period March 1981-October 1982. 42 patients (mean age 53 +/- 16 years) were selected for preventive treatment. Diagnostic procedures were correctly performed in 22 patients (52.4%). 32 patients (76.2%) received the recommended drug initially. In 18 patients (42.9%) isoniazid was correctly prescribed for six months. In only 15 patients (35.7%) was the diagnostic and therapeutic approach correct. The reasons for these quality inadequacies on the diagnostic and therapeutic levels are discussed.