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Clarithromycin(CAM)の高用量(800mg/日)の成人市中肺炎に対する臨床効果を検討した。登録された15例のうち有効性解析対象症例は9例であり,治療終了時の臨床効果判定は9例全例で有効であった。原因菌は4例で検出され,Streptococcus pneumoniaeとMycoplasma pneumoniaeの混合感染1例,Mycoplasma pneumoniae(単独感染)1例,Haemophilus influenzae 1例,Moraxella catarrhalis 1例であった。このうち,S. pneumoniaeとM. pneumoniae(単独感染)はマクロライド耐性菌であり,細菌学的効果は存続であったものの,臨床症状は改善しており,いずれも有効と判定された。安全性解析対象症例15例において副作用は認められなかった。以上より,CAM 800mg/日の高用量投与は成人市中肺炎に有効である可能性が示唆された。
In this study, we evaluated the clinical efficacy of high-dose(800mg/day)clarithromycin(CAM)against community-acquired adult pneumonia. Of the 15 cases registered in this study, 9 were subjected to efficacy analysis, and treatment was shown to be effective in all 9 cases. Pathogenic bacteria were detected in four cases:one case of mixed infection with Streptococcus pneumoniae and Mycoplasma pneumoniae, and three cases of independent infections with M. pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. S. pneumoniae and M. pneumoniae(independent infection)were macrolide-resistant strains;however, bacteriological and clinical efficacies of CAM were persistent and effective, respectively, in both cases, and clinical symptoms alleviated. Safety was evaluated in 15 cases, and no clinical side effects related to CAM were observed. These results indicate that high-dose(800mg/day)CAM is effective against community-acquired pneumonia in adults.