R.M. Schnabel

Dr. R.M. Schnabel


Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

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

Representative Publications

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1 November 2015 in Respiratory Medicine
Verified
Journal Article
Closed access
RSR.M. Schnabel
R.M. Schnabel
MBM.L.L. Boumans
M.L.L. Boumans
ASA. Smolinska
A. Smolinska
ESE.E. Stobberingh
E.E. Stobberingh
RKRuth Kaufmann
Ruth Kaufmann
DBD.C.J.J. Bergmans
D.C.J.J. Bergmans

29 September 2015 in BMC Pulmonary Medicine
Verified
Journal Article
Open access
PDF file
RSR.M. Schnabel
R.M. Schnabel
KVKim Hubertus van der Velden
Kim Hubertus van der Velden
AOA Osinski
A Osinski
GRGernot Rohde
Gernot Rohde
PRP M H J Roekaerts
P M H J Roekaerts
DBDennis Bergmans
Dennis Bergmans
Flexible, fibreoptic bronchoscopy (FFB) and bronchoalveolar lavage (BAL) have been used for diagnostic purposes in critically ill ventilated patients. The additional diagnostic value compared to tracheal aspirations in ventilator-associated pneumonia (VAP) has been questioned. Nevertheless, BAL can provide extra information for the differential diagnosis of respiratory disease and good antibiotic stewardship. These benefits should outweigh potential hazards caused by the invasiveness of this diagnostic technique. The focus of the present study was on the clinical course and complications of patients following BAL procedures up to 24 h. Hundred sixty-four FFB guided BAL procedures for suspected pneumonia were analysed in an observational study. The clinical course of patients was monitored by respiratory and haemodynamic data before BAL, 1 and 24 h after BAL. Complications were defined and registered. Factors associated with complications were analysed by logistic regression. Clinical course: a decrease in average pO2/FiO2 ratio 1 h after BAL from 29 kPa (218 mmHg) to 25 kPa (189 mmHg) (p < 0.05) was observed which fully recovered within 24 h. Respiratory complications: the incidence of procedure related hypo-oxygenation (SaO2 ≤ 88 %) and/or bronchospasm was 9 %; a decrease of >25 % PaO2/FiO2 ratio 1 h after BAL was found in 29 % of patients; no bleeding or pneumothorax were registered. Haemodynamic complications: there were no cases of hypertension and cardiac rhythm disturbances; haemodynamic instability within the first 24 h after BAL was recorded in 22 %; this was correlated with a cardiovascular diagnosis at admission (OR 2.9; 95 % CI 1.2 - 6.7) and the presence of cardiovascular co-morbidity (OR 3.5; 95 % CI 1.5 – 8.3). The incidence of bacteraemia was 7 %. There was no case of procedure related death. Frequently occurring haemodynamic and respiratory instability but no cases of cardiac rhythm disturbances, bleeding, pneumothorax or procedure related death were attributable to diagnostic FFB and BAL. The procedures should be conducted under careful supervision by experienced physicians. Only a randomized controlled trial that compares diagnostic FFB and BAL with a non-invasive strategy could ultimately establish the safety profile and clinical utility of these procedures in critically ill ventilated patients.

1 March 2014 in Open Forum Infectious Diseases
Verified
Journal Article
Open access
PDF file
RSR.M. Schnabel
R.M. Schnabel
CLCatharina F. Linssen
Catharina F. Linssen
NGNele Guion
Nele Guion
WMWalther N. van Mook
Walther N. van Mook
DBDennis C. Bergmans
Dennis C. Bergmans
It has been questioned if Candida pneumonia exists as a clinical entity. Only histopathology can establish the definite diagnosis. Less invasive diagnostic strategies lack specificity and have been insufficiently validated. Scarcity of this pathomechanism and nonspecific clinical presentation make validation and the development of a clinical algorithm difficult. In the present study, we analyze whether Candida pneumonia exists in our critical care population. We used a bronchoalveolar lavage (BAL) specimen database that we have built in a structural diagnostic approach to ventilator-associated pneumonia for more than a decade consisting of 832 samples. Microbiological data were linked to clinical information and available autopsy data. We searched for critically ill patients with respiratory failure with no other microbiological or clinical explanation than exclusive presence of Candida species in BAL fluid. Five cases could be identified with Candida as the likely cause of pneumonia.

1 April 2021 in Journal of Critical Care
Verified
Journal Article
Open access
JBJulia L.M. Bels
Julia L.M. Bels
SKSander M.J. van Kuijk
Sander M.J. van Kuijk
CGChahinda Ghossein-Doha
Chahinda Ghossein-Doha
FTFabian H. Tijssen
Fabian H. Tijssen
RGRob J.J. van Gassel
Rob J.J. van Gassel
BBBas Van Bussl
Bas Van Bussl
The majority of patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection are admitted to the Intensive Care Unit (ICU) for mechanical ventilation. The role of multi-organ failure during ICU admission as driver for outcome remains to be investigated yet. Prospective cohort of mechanically ventilated critically ill with SARS-CoV-2 infection. 94 participants of the MaastrICCht cohort (21% women) had a median length of stay of 16 days (maximum of 77). After division into survivors (n = 59) and non-survivors (n = 35), we analysed 1555 serial SOFA scores using linear mixed-effects models. Survivors improved one SOFA score point more per 5 days (95% CI: 4–8) than non-survivors. Adjustment for age, sex, and chronic lung, renal and liver disease, body-mass index, diabetes mellitus, cardiovascular risk factors, and Acute Physiology and Chronic Health Evaluation II score did not change this result. This association was stronger for women than men (P-interaction = 0.043). The decrease in SOFA score associated with survival suggests multi-organ failure involvement during mechanical ventilation in patients with SARS-CoV-2. Surviving women appeared to improve faster than surviving men. Serial SOFA scores may unravel an unfavourable trajectory and guide decisions in mechanically ventilated patients with SARS-CoV-2.

8 August 2025 in Thrombosis Research
Verified
Journal Article
Open access
WSW.J.E. Stenger
W.J.E. Stenger
CUCorstiaan Den Uil
Corstiaan Den Uil
WRW.J.R. Rietdijk
W.J.R. Rietdijk
IAI. Al Amri
I. Al Amri
JMJose Montero-Cabezas
Jose Montero-Cabezas
JJJ. Jongkind
J. Jongkind
Catheter-directed thrombectomy (CDT) is a promising alternative to full dose thrombolysis in patients with acute high-risk pulmonary embolism (PE), expected to have a more direct effect on pulmonary artery clot burden and a better safety profile. Randomized trials evaluating the safety and efficacy of CDT in high-risk patients are currently unavailable. The TORPEDO-NL study is an investigator-initiated, publicly-funded, multicenter, open-label randomized controlled trial designed to evaluate the superiority of CDT over systemic thrombolysis in patients with high-risk PE. Adults with: 1) confirmed acute PE, 2) a high risk for mortality, and 3) CDT available and technically feasible, will be randomized 2:1 to CDT versus systemic thrombolysis. The primary outcome is the composite incidence of all-cause mortality, treatment failure, major bleeding, and all-cause stroke at day 30. Secondary outcomes include desirability of outcome ranking (DOOR) at day 7, length of hospital stay, patient-reported outcomes including quality of life and symptom burden, functional recovery, and 1-year cost-effectiveness. The trial anticipates recruiting 111 patients and is funded by the The Netherlands Health Care Institute, The Netherlands Organization for Health Research and Development, the Dutch Heart Foundation, and unrestricted grants from Penumbra Inc. and Inari Medical. gov number, NCT06833827. TORPEDO-NL is the first publicly-funded randomized trial to investigate the effect of CDT treatment specifically in high-risk PE patients. The trial is anticipated to play an important role in revising recommendations for high-risk PE treatment in international guidelines.

4 February 2023 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
DFDaan F.L. Filippini
Daan F.L. Filippini
LHLaura A. Hagens
Laura A. Hagens
NHNanon F. L. Heijnen
Nanon F. L. Heijnen
Claudio ZimatoreClaudio Zimatore
Claudio Zimatore
LALeila N. Atmowihardjo
Leila N. Atmowihardjo
MSMarry R. Smit
Marry R. Smit
Introduction: The Radiographic Assessment of Lung Edema (RALE) score provides a semi-quantitative measure of pulmonary edema. In patients with acute respiratory distress syndrome (ARDS), the RALE score is associated with mortality. In mechanically ventilated patients in the intensive care unit (ICU) with respiratory failure not due to ARDS, a variable degree of lung edema is observed as well. We aimed to evaluate the prognostic value of RALE in mechanically ventilated ICU patients. Methods: Secondary analysis of patients enrolled in the ‘Diagnosis of Acute Respiratory Distress Syndrome’ (DARTS) project with an available chest X-ray (CXR) at baseline. Where present, additional CXRs at day 1 were analysed. The primary endpoint was 30-day mortality. Outcomes were also stratified for ARDS subgroups (no ARDS, non-COVID-ARDS and COVID-ARDS). Results: 422 patients were included, of which 84 had an additional CXR the following day. Baseline RALE scores were not associated with 30-day mortality in the entire cohort (OR: 1.01, 95% CI: 0.98–1.03, p = 0.66), nor in subgroups of ARDS patients. Early changes in RALE score (baseline to day 1) were only associated with mortality in a subgroup of ARDS patients (OR: 1.21, 95% CI: 1.02–1.51, p = 0.04), after correcting for other known prognostic factors. Conclusions: The prognostic value of the RALE score cannot be extended to mechanically ventilated ICU patients in general. Only in ARDS patients, early changes in RALE score were associated with mortality.