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  • Title: [Retrospective Analysis of Factors Decreasing the Efficacy of Tazobactam/Piperacillin for Pneumonia in Elderly Patients].
    Author: So M, Oda K, Ota K, Sakamoto N, Suzuki T.
    Journal: Yakugaku Zasshi; 2018; 138(4):581-588. PubMed ID: 29608008.
    Abstract:
    　Tazobactam/piperacillin (TAZ/PIPC) is an antimicrobial drug agent with a broad spectrum of antibacterial activity and is recommended as first-line therapy for hospital-acquired pneumonia, nursing- and healthcare-associated pneumonia, and other severe pneumonias. Nevertheless, in clinical settings, TAZ/PIPC is not fully effective in the treatment of pneumonia in the elderly. In the present study, we retrospectively investigated the efficacy of TAZ/PIPC for pneumonia in elderly patients and identified factors that reduced its efficacy. Ninety-nine patients (mean age of 83.4 years and no significant difference in the sex ratio) were included in the present study. The efficacy rate of TAZ/PIPC for pneumonia in elderly patients was 81.8%, which was approximately 7 to 10% lower than that in domestic phase III trials. A multivariate analysis identified the complications of chronic respiratory disease as a significant factor attenuating the therapeutic effects of TAZ/PIPC [odds ratio 4.050, 95% confidence interval (CI) 1.008-16.271]. In conclusion, TAZ/PIPC may not be sufficiently effective for pneumonia in elderly patients with the complications of chronic respiratory disease as a background.
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