[Clinical evaluation of sisomicin following intravenous drip infusion in respiratory tract infections].

The efficacy, safety and utility of sisomicin (SISO) followed intravenous infusion were evaluated in 35 cases with various respiratory infections. For many cases, SISO was given at a daily dosage of 100 mg, and a single dose was infused over about 1 hour. Clinical efficacy was evaluable in 28 cases including pneumonia (14 cases), bronchitis (8 cases), bronchiectasis (4 cases), pulmonary suppuration (1 case) and pulmonary abscess plus pyothorax (1 case). Almost cases had diagnosis of serious infection associated with various diseases. Clinical efficacy was evaluated as "excellent" in 2 cases, "good" in 15 cases, "fair" in 5 cases and "poor" in 6 cases, and efficacy rate in total case was 60.7%. Efficacy rate stratified by disease was calculated as 57.1% in pneumonia, 87.5% in bronchitis, 50.0% in bronchiectasis. Responses against pulmonary suppuration or pulmonary abscess with pyothorax were little or not. Bacteriologically, organisms isolated from sputum cleared in 7 out of 15 evaluable cases, thus the responses rate was 46.7%. Adverse reaction probably due to treatment observed in 2 cases with hepatic dysfunction. Blood levels of SISO at the end of infusion were ranged from 2.1 to 6.4 micrograms/ml, and no tendency of accumulation in blood after repeated infusion was showed.