RT Journal Article T1 Antimicrobial de-escalation in the critically ill patient and assessment of clinical cure: the DIANA study. A1 De-Bus, Liesbet A1 Depuydt, Pieter A1 Steen, Johan A1 Dhaese, Sofie A1 De-Smet, Ken A1 Tabah, Alexis A1 Akova, Murat A1 Cotta, Menino Osbert A1 De-Pascale, Gennaro A1 Dimopoulos, George A1 Fujitani, Shigeki A1 Garnacho-Montero, Jose A1 Leone, Marc A1 Lipman, Jeffrey A1 Ostermann, Marlies A1 Paiva, José-Artur A1 Schouten, Jeroen A1 Sjövall, Fredrik A1 Timsit, Jean-François A1 Roberts, Jason A A1 Zahar, Jean-Ralph A1 Zand, Farid A1 Zirpe, Kapil A1 De-Waele, Jan J K1 Antimicrobial de-escalation K1 Bacterial infection K1 Clinical cure K1 Empirical therapy K1 Intensive care unit AB The DIANA study aimed to evaluate how often antimicrobial de-escalation (ADE) of empirical treatment is performed in the intensive care unit (ICU) and to estimate the effect of ADE on clinical cure on day 7 following treatment initiation. Adult ICU patients receiving empirical antimicrobial therapy for bacterial infection were studied in a prospective observational study from October 2016 until May 2018. ADE was defined as (1) discontinuation of an antimicrobial in case of empirical combination therapy or (2) replacement of an antimicrobial with the intention to narrow the antimicrobial spectrum, within the first 3 days of therapy. Inverse probability (IP) weighting was used to account for time-varying confounding when estimating the effect of ADE on clinical cure. Overall, 1495 patients from 152 ICUs in 28 countries were studied. Combination therapy was prescribed in 50%, and carbapenems were prescribed in 26% of patients. Empirical therapy underwent ADE, no change and change other than ADE within the first 3 days in 16%, 63% and 22%, respectively. Unadjusted mortality at day 28 was 15.8% in the ADE cohort and 19.4% in patients with no change [p = 0.27; RR 0.83 (95% CI 0.60-1.14)]. The IP-weighted relative risk estimate for clinical cure comparing ADE with no-ADE patients (no change or change other than ADE) was 1.37 (95% CI 1.14-1.64). ADE was infrequently applied in critically ill-infected patients. The observational effect estimate on clinical cure suggested no deleterious impact of ADE compared to no-ADE. However, residual confounding is likely. PB Springer YR 2020 FD 2020-07 LK http://hdl.handle.net/10668/15716 UL http://hdl.handle.net/10668/15716 LA en NO De Bus L, Depuydt P, Steen J, Dhaese S, De Smet K, Tabah A, et al. Antimicrobial de-escalation in the critically ill patient and assessment of clinical cure: the DIANA study. Intensive Care Med. 2020 Jul;46(7):1404-1417. DS RISalud RD Apr 11, 2025