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  • Title: Nationwide, multicenter survey on the efficacy and safety of piperacillin for adult community-acquired pneumonia in Japan.
    Author: Yamamoto Y, Watanabe A, Goto H, Matsushima T, Abe S, Aoki N, Shimokata K, Mikasa K, Niki Y, Kohno S.
    Journal: J Infect Chemother; 2012 Aug; 18(4):544-51. PubMed ID: 22618270.
    Abstract:
    A survey on adult community-acquired pneumonia was conducted jointly by multiple centers nationwide to verify the Japanese Respiratory Society Guidelines for the Management of Community-Acquired Pneumonia in Adults (JRS2005). The efficacy and safety of piperacillin (PIPC) were investigated at the same time. PIPC is recommended as the initial treatment for patients with suspected bacterial pneumonia and pneumococcal pneumonia in JRS2005. Overall, 552 and 333 patients were registered for safety and efficacy analysis in this study, respectively. The majority of the cases in which PIPC was used had moderate disease (63.7 %), and the most common daily dosage was 4 g (73.6 %). The efficacy rate was 83.5 % overall, 81.1 % in patients with suspected bacterial pneumonia, and 92.8 % in patients with pneumococcal pneumonia. The efficacy rate with a daily dosage of 4 g was 84.9 %, and the efficacy rates achieved with a daily dosage of 4 g in patients who had mild and moderate suspected bacterial pneumonia were 90.0 and 82.6 %, respectively. The most commonly isolated causative organisms were Streptococcus pneumoniae (S. pneumoniae) and Haemophilus influenzae (H. influenzae), and the bacterial eradication rates were high (97.2 and 100 %, respectively). The incidence of adverse drug reactions was 5.62 %, among which the main events were hepatic dysfunction and decreased white blood cell count. In conclusion, this study showed that PIPC is safe and effective at 4 g/day for mild-to-moderate adult community-acquired pneumonia.
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