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  • Title: Usefulness of β-lactam and macrolide combination therapy for treating community-acquired pneumonia patients hospitalized in the intensive care unit: Propensity score analysis of a prospective cohort study.
    Author: Ito A, Ishida T, Tachibana H, Nakanishi Y, Tokioka F, Yamazaki A, Washio Y, Irie H, Otake T.
    Journal: J Infect Chemother; 2021 Oct; 27(10):1447-1453. PubMed ID: 34147355.
    Abstract:
    INTRODUCTION: Whether β-lactam and macrolide combination therapy reduces mortality in severe community-acquired pneumonia (SCAP) patients hospitalized in the intensive care unit (ICU) is controversial. The aim of the present study was to evaluate the usefulness of β-lactam and macrolide combination therapy for SCAP patients hospitalized in the ICU. METHODS: A prospective, observational, cohort study of hospitalized pneumonia patients was performed. Hospitalized SCAP patients admitted to the ICU within 24 h between October 2010 and October 2017 were included for analysis. The primary outcome was 30-day mortality, and secondary outcomes were 14-day mortality and ICU mortality. Inverse probability of treatment weighting (IPTW) analysis as a propensity score analysis was used to reduce biases, including six covariates: age, sex, C-reactive protein, albumin, Pneumonia Severity Index score, and APACHE II score. RESULTS: A total of 78 patients were included, with 48 patients in the non-macrolide-containing β-lactam therapy group and 30 patients in the macrolide combination therapy group. β-lactam and macrolide combination therapy significantly decreased 30-day mortality (16.7% vs. 43.8%; P = 0.015) and 14-day mortality (6.7% vs. 31.3%; P = 0.020), but not ICU mortality (10% vs 27.1%, P = 0.08) compared with non-macrolide-containing β-lactam therapy. After adjusting by IPTW, macrolide combination therapy also decreased 30-day mortality (odds ratio, 0.29; 95%CI, 0.09-0.96; P = 0.04) and 14-day mortality (odds ratio, 0.19; 95%CI, 0.04-0.92; P = 0.04), but not ICU mortality (odds ratio, 0.34; 95%CI, 0.08-1.36; P = 0.13). CONCLUSIONS: Combination therapy with β-lactam and macrolides significantly improved the prognosis of SCAP patients hospitalized in the ICU compared with a non-macrolide-containing β-lactam regimen.
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