[A study on the retreatment of pulmonary tuberculosis by the addition of 654-2]

654-2 plus chemotherapy were used to retreat TB. After a full course of treatment, rates of negative sputum in the observation group and in the control group were 90.6% and 68.8% respectively (The difference in the rates was statistically significant P less than 0.05). The total rate of focus in the observation group was 46.9% and that in the control group was 21.9%. The difference was striking (P less than 0.05). The general efficacy for cavity alteration in the observation group was 42.3% and in control group was 16.0%. Comparing the two groups, there was an obvious difference (P less than 0.05). After ceasing medication, no relapse was observed through a period of one year in the treated group.