simon dubler

Dr. simon dubler

Department of Anesthesiology and Intensive Care Medicine, University Hospital Essen, Hufelandstr. 55, 45147 Essen, Germany
orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
14 June 2019 in Critical Care
Verified
Journal Article
Open access
PDF file
MBMatteo Bassetti
Matteo Bassetti
Daniele Roberto GiacobbeDaniele Roberto Giacobbe
Daniele Roberto Giacobbe
AVAntonio Vena
Antonio Vena
CTCecilia Trucchi
Cecilia Trucchi
FAFilippo Ansaldi
Filippo Ansaldi
PMphilippe montravers
philippe montravers
The objective of this study was to assess the cumulative incidence of invasive candidiasis (IC) in intensive care units (ICUs) in Europe. A multinational, multicenter, retrospective study was conducted in 23 ICUs in 9 European countries, representing the first phase of the candidemia/intra-abdominal candidiasis in European ICU project (EUCANDICU). During the study period, 570 episodes of ICU-acquired IC were observed, with a cumulative incidence of 7.07 episodes per 1000 ICU admissions, with important between-center variability. Separated, non-mutually exclusive cumulative incidences of candidemia and IAC were 5.52 and 1.84 episodes per 1000 ICU admissions, respectively. Crude 30-day mortality was 42%. Age (odds ratio [OR] 1.04 per year, 95% CI 1.02–1.06, p < 0.001), severe hepatic failure (OR 3.25, 95% 1.31–8.08, p 0.011), SOFA score at the onset of IC (OR 1.11 per point, 95% CI 1.04–1.17, p 0.001), and septic shock (OR 2.12, 95% CI 1.24–3.63, p 0.006) were associated with increased 30-day mortality in a secondary, exploratory analysis. The cumulative incidence of IC in 23 European ICUs was 7.07 episodes per 1000 ICU admissions. Future in-depth analyses will allow explaining part of the observed between-center variability, with the ultimate aim of helping to improve local infection control and antifungal stewardship projects and interventions.

31 January 2020 in Antimicrobial Resistance & Infection Control
Verified
Journal Article
Open access
PDF file
SDsimon dubler
simon dubler
MLM. Lenz
M. Lenz
SZS. Zimmermann
S. Zimmermann
DRD. C. Richter
D. C. Richter
KWK. H. Weiss
K. H. Weiss
AHA. Heininger
A. Heininger
Background: The relevance of vancomycin resistance in enterococcal blood stream infections (BSI) is still controversial. Aim of this study was to outline the effect of vancomycin resistance ofEnterococcus faeciumon the outcome of patients with BSI after orthotopic liver transplantation (OLT).Methods: The outcome of OLT recipients developing BSI with vancomycin-resistant (VRE) versus vancomycin-susceptibleEnterococcus faecium(VSE) was compared based on data extraction from medical records. Multivariate regression analyses identified risk factors for mortality and unfavourable outcomes (defined as death or prolonged intensive care stay) after 30 and 90 days.Results: Mortality was similar between VRE- (n = 39) and VSE- (n = 138) group after 30 (p = 0.44) or 90 days (p = 0.39). Comparable results occurred regarding unfavourable outcomes. Mean SOFANon-GCSscore during the 7-day-period before BSI onset was the independent predictor for mortality at both timepoints (HR 1.32; CI 1.14–1.53; and HR 1.18; CI 1.08–1.28). Timely appropriate antibiotic therapy, recent ICU stay and vancomycin resistance did not affect outcome after adjusting for confounders.Conclusion: Vancomycin resistance did not influence outcome among patients withEnterococcus faeciumbacteraemia after OLT. Only underlying severity of disease predicted poor outcome among this homogenous patient population.Trial registration: This study was registered at the German clinical trials register (DRKS-ID:DRKS00013285).

1 December 2020 in Journal of Critical Care
Verified
Journal Article
Closed access
RBRaphael Romano Bruno
Raphael Romano Bruno
BWBernhard Wernly
Bernhard Wernly
MBMichael Beil
Michael Beil
JMJohanna M. Muessig
Johanna M. Muessig
Tim RahmelTim Rahmel
Tim Rahmel
CJChristian Jung
Christian Jung

Verified
Journal Article
Open access
PDF file
SDsimon dubler
simon dubler
MEMichael Etringer
Michael Etringer
Markus A. WeigandMarkus A. Weigand
Markus A. Weigand
TBThorsten Brenner
Thorsten Brenner
Stefan ZimmermannStefan Zimmermann
Stefan Zimmermann
CLChristoph Lichtenstern
Christoph Lichtenstern
Background: Critically ill patients, especially those who have undergone solid organ transplantation (SOT), are at risk of invasive pulmonary aspergillosis (IPA). The outcome relevance of adequately treated putative IPA (pIPA) is a matter of debate. The aim of this study is to assess the outcome relevance of pIPA in a cohort of critically ill patients with and without SOT. Methods: Data from 121 surgical critically ill patients with pIPA (n = 30) or non-pIPA (n = 91) were included. Cox regression analysis was used to identify risk factors for mortality and unfavourable outcomes after 28 and 90 days. Results: Mortality rates at 28 days were similar across the whole cohort of patients (pIPA: 31% vs. non-pIPA: 27%) and did not differ in the subgroup of patients after SOT (pIPA: 17% vs. non-pIPA: 22%). A higher Sequential Organ Failure Assessment (SOFA) score and evidence of bacteraemia were identified as risk factors for mortality and unfavourable outcome, whereas pIPA itself was not identified as an independent predictor for poor outcomes. Conclusions: Adequately treated pIPA did not increase the risk of death or an unfavourable outcome in this mixed cohort of critically ill patients with or without SOT, whereas higher disease severity and bacteraemia negatively affected the outcome.

15 January 2025 in Scientific Reports
Verified
Journal Article
Open access
PDF file
SDsimon dubler
simon dubler
MEMichael Etringer
Michael Etringer
CLChristoph Lichtenstern
Christoph Lichtenstern
TBThorsten Brenner
Thorsten Brenner
SZStefan Zimmermann
Stefan Zimmermann
MWMarkus A. Weigand
Markus A. Weigand
Invasive infections with Aspergillus fumigatus in ICU patients are linked to high morbidity and mortality. Diagnosing invasive pulmonary aspergillosis (IPA) in non-immunosuppressed patients is difficult, as Aspergillus antigen (galactomannan [GM]) may have other causes. This retrospective study analyzed 160 ICU surgical patients with positive GM in broncho-alveolar lavage fluid (BALF), classifying them based on AspICU criteria for suspected IPA (pIPA) or aspiration. Patients with pIPA had higher disease severity than those with aspiration, including higher dialysis rates, organ transplantation, corticosteroid use, and Sequential Organ Failure Assessment (SOFA) score. Aspergillus culture was positive in 47.0% of pIPA cases but only 2.6% of aspiration cases (p < 0.001). SOFA score at first positive GM in BALF independently predicted 28-day mortality. In surgical patients with a positive GM in BALF, aspiration is more likely if there’s no corticosteroid therapy, negative Aspergillus culture, and a history of aspiration events. Diagnosis of pIPA requires Aspergillus culture or prior corticosteroid therapy in this cohort of critically ill patients.

12 August 2022 in Reports
Verified
Journal Article
Open access
PDF file
SDsimon dubler
simon dubler
TBThorsten Brenner
Thorsten Brenner
Stefan ZimmermannStefan Zimmermann
Stefan Zimmermann
TMTheresa Mokry
Theresa Mokry
ARAnka Röhr
Anka Röhr
Markus A. WeigandMarkus A. Weigand
Markus A. Weigand
Background: Hospital-acquired infections with extensively drug-resistant (XDR) Pseudomonas aeruginosa (PA) have become a worrisome concern because of unfavorable outcomes and limited antimicrobial treatment options. Studies with new antimicrobial substances against XDR-PA show very promising results in different infection types, but the data for central nervous system (CNS) infections are scarce. Case presentation: Here, we report the case of a young patient with healthcare-associated meningitis caused by XDR-PA following severe craniocerebral injury. An off-label use of high-dose ceftolozane/tazobactam (C/T) monotherapy was administered for 10 days in parallel with source-controlling measures. Clinical and microbial recovery could be accomplished promptly. Conclusion: In patients with hospital-acquired CNS infections due to XDR-PA, C/T might be a new, safe and effective alternative with fewer adverse effects compared to older polymyxin- or aminoglycoside-based regimens.