Claudia Spies

47.1k total citations · 8 hit papers
816 papers, 21.4k citations indexed

About

Claudia Spies is a scholar working on Critical Care and Intensive Care Medicine, Surgery and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Claudia Spies has authored 816 papers receiving a total of 21.4k indexed citations (citations by other indexed papers that have themselves been cited), including 262 papers in Critical Care and Intensive Care Medicine, 241 papers in Surgery and 193 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Claudia Spies's work include Intensive Care Unit Cognitive Disorders (220 papers), Cardiac, Anesthesia and Surgical Outcomes (161 papers) and Anesthesia and Sedative Agents (113 papers). Claudia Spies is often cited by papers focused on Intensive Care Unit Cognitive Disorders (220 papers), Cardiac, Anesthesia and Surgical Outcomes (161 papers) and Anesthesia and Sedative Agents (113 papers). Claudia Spies collaborates with scholars based in Germany, United States and Netherlands. Claudia Spies's co-authors include Finn M. Radtke, Christian von Heymann, Jean‐Louis Vincent, Martin Franck, Klaus‐Dieter Wernecke, Michael Sander, Tim Neumann, Felix Balzer, Konrad Reinhart and Bruno Neuner and has published in prestigious journals such as The Lancet, JAMA and SHILAP Revista de lepidopterología.

In The Last Decade

Claudia Spies

774 papers receiving 20.6k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

ESPEN Guidelines on Enteral Nutrition: Intensive care

2006 865 citations Claudia Spies et al. profile →
Mortality after surgery in Europe: a 7 day cohort study

2012 809 citations Claudia Spies et al. profile →
European Society of Anaesthesiology evidence-based and consensus-based guideline on postoperative delirium

2017 680 citations César Aldecoa, Gabriella Bettelli et al. profile →
A positive fluid balance is associated with a worse outcome in patients with acute renal failure

2008 663 citations Claudia Spies et al. Critical Care profile →
Perioperative fasting in adults and children

2011 551 citations Claudia Spies et al. profile →
Gastrointestinal function in intensive care patients: terminology, definitions and management. Recommendations of the ESICM Working Group on Abdominal Problems

2012 364 citations Jan-Peter Braun, Claudia Spies et al. profile →
Fluid challenges in intensive care: the FENICE study

2015 343 citations César Aldecoa, Claudia Spies et al. profile →
Comfort and patient-centred care without excessive sedation: the eCASH concept

2016 258 citations Claudia Spies et al. profile →

Peers

Countries citing papers authored by Claudia Spies

Since Specialization

Citations

This map shows the geographic impact of Claudia Spies's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Claudia Spies with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Claudia Spies more than expected).

Fields of papers citing papers by Claudia Spies

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Claudia Spies. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Claudia Spies. The network helps show where Claudia Spies may publish in the future.

Co-authorship network of co-authors of Claudia Spies

This figure shows the co-authorship network connecting the top 25 collaborators of Claudia Spies. A scholar is included among the top collaborators of Claudia Spies based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Claudia Spies. Claudia Spies is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	Tolerance for uncertainty and medical students' specialty choices: A myth revisited 2025 ·Medical Education ·Odette Wegwarth, (unknown), Claudia Spies, Martin Möckel, Stefan J. Schaller, Markus Wehler, (unknown)	0
2	Health-related quality of life correlates with patient-reported and proxy-reported disability in critical illness survivors: a secondary analysis of the ERIC trial 2025 ·Critical Care ·(unknown), Julius J. Grunow, Claudia Spies, Björn Weiß, Nicolas Paul	1
3	Facilitators and barriers to the implementation of prehabilitation for frail patients into routine health care: a realist review 2024 ·BMC Health Services Research ·(unknown), Jörn Kiselev, Stefan J. Schaller, Claudia Spies, Tanja Rombey	9
4	Structural disconnectivity in postoperative delirium: A perioperative two‐center cohort study in older patients 2024 ·Alzheimer s & Dementia ·(unknown), Stefan Winzeck, (unknown), (unknown), Emmanuel A. Stamatakis, Marta Correia, Jacobus Preller, Insa Feinkohl, Jeroen Hendrikse, Tobias Pischon, Claudia Spies, Arjen J. C. Slooter, Georg Winterer, David Menon, Norman Zacharias	6
5	Evaluating the Construct Validity of the Charité Alarm Fatigue Questionnaire using Confirmatory Factor Analysis 2024 ·JMIR Human Factors ·(unknown), Henning Krampe, Kristina Fuest, (unknown), (unknown), (unknown), Sebastian Schmid, Claudia Spies, Björn Weiß, Felix Balzer, Akira-Sebastian Poncette, (unknown)	3
6	An exploratory research report on brain mineralization in postoperative delirium and cognitive decline 2024 ·European Journal of Neuroscience ·(unknown), Friedrich Borchers, Insa Feinkohl, Stefan Hetzer, (unknown), Frank Konietschke, Gunnar Lachmann, Claudia Chien, Claudia Spies, Georg Winterer, László Záborszky, Norman Zacharias, Friedemann Paul	2
7	A brief questionnaire for measuring alarm fatigue in nurses and physicians in intensive care units 2023 ·Scientific Reports ·(unknown), (unknown), Henning Krampe, (unknown), Claudia Spies, Björn Weiß, (unknown), Felix Balzer, Akira-Sebastian Poncette	11
8	Boosting for insight and/or boosting for agency? How to maximize accurate test interpretation with natural frequencies 2023 ·BMC Medical Education ·Markus A. Feufel, (unknown), Friederike Kendel, Claudia Spies	5
9	Living with Chronic Pain During the COVID-19 Pandemic: A Qualitative Analysis 2022 ·Refubium (Universitätsbibliothek der Freien Universität Berlin) ·(unknown), (unknown), Claudia Spies, Claudia Denke, Henning Krampe, Sascha Tafelski	3
10	Use of patient-relevant outcome measures to assess the long-term effects of care bundles in the ICU: a scoping review protocol 2022 ·BMJ Open ·Nicolas Paul, (unknown), (unknown), Monika Nothacker, Björn Weiß, Claudia Spies	4
11	Placenta Accreta Spectrum Part I: anesthesia considerations based on an extended review of the literature 2022 ·Journal of Perinatal Medicine ·(unknown), (unknown), Pierre-Yves Dewandre, Thorsten Braun, Christopher O. Leonards, (unknown), Claudia Spies, Wolfgang Henrich, Lutz Kaufner	2
12	Functional brain network and trail making test changes following major surgery and postoperative delirium: a prospective, multicentre, observational cohort study 2022 ·British Journal of Anaesthesia ·(unknown), Simone J.T. van Montfort, Lisette M. Vernooij, Ilse Kant, (unknown), Claudia Spies, Jeroen Hendrikse, Arjen J. C. Slooter, Edwin van Dellen	16
13	Influence of Patient-Specific Covariates on Test Validity of Two Delirium Screening Instruments in Neurocritical Care Patients (DEMON-ICU) 2021 ·Neurocritical Care ·Björn Weiß, Nicolas Paul, Claudia Spies, (unknown), (unknown), Farid Salih, Stefan Wolf, Alawi Luetz	7
14	Enhanced Recovery after Intensive Care (ERIC): study protocol for a German stepped wedge cluster randomised controlled trial to evaluate the effectiveness of a critical care telehealth program on process quality and functional outcomes 2020 ·BMJ Open ·Christine Adrion, Björn Weiß, Nicolas Paul, Elke Berger, Reinhard Busse, Ursula Marschall, (unknown), Simone Rosseau, Ulrich Mansmann, Claudia Spies	14
15	Clinical practice in the management of postoperative delirium by Chinese anesthesiologists: a cross-sectional survey designed by the European Society of Anaesthesiology 2020 ·Journal of International Medical Research ·(unknown), (unknown), Claudia Spies, Bruno Neuner, César Aldecoa, Gabriella Bettelli, Federico Bilotta, Robert D. Sanders, Sylvia Krämer, Björn Weiß	5
16	Association of obesity, diabetes and hypertension with cognitive impairment in older age 2018 ·Clinical Epidemiology ·Insa Feinkohl, Gunnar Lachmann, Wolf‐Rüdiger Brockhaus, Friedrich Borchers, Sophie K. Piper, Thomas H. Ottens, Hendrik M. Nathoe, Anne-Mette C. Sauër, Jan M. Dieleman, Finn M. Radtke, Diederik van Dijk, Tobias Pischon, Claudia Spies	38
17	The paediatric Confusion Assessment Method for the Intensive Care Unit (pCAM-ICU): Translation and cognitive debriefing for the German-speaking area 2012 ·SHILAP Revista de lepidopterología ·(unknown), Alawi Luetz, Alexander Gratopp, (unknown), Judith Mueller, Heidi A. B. Smith, E. Wesley Ely, Heiko Krude, Claudia Spies	5
18	Quality indicators in intensive care medicine: why? Use or burden for the intensivist 2010 ·SHILAP Revista de lepidopterología ·Christian Waydhas, (unknown), (unknown), Michael Quintel, Ralf Kuhlen, Andreas Markewitz, Marc Kastrup, Götz Geldner, Frank Bloos, Claudia Spies, (unknown), Hendrik Mende, Jan-Peter Braun, (unknown)	2
19	New Strategies to Detect Alcohol Use Disorders in the Preoperative Assessment Clinic of a German University Hospital 2008 ·Anesthesiology ·(unknown), Tim Neumann, (unknown), (unknown), Edith Weiß-Gerlach, (unknown), Claudia Spies	42
20	Alcohol Biomarker Screening in Medical and Surgical Settings 2006 ·Alcoholism Clinical and Experimental Research ·Peter M. Miller, Claudia Spies, Tim Neumann, Martin A. Javors, Anastacio M. Hoyumpa, John D. Roache, (unknown), (unknown), Francis E. Sharkey, Raymond F. Anton, Brent M. Egan, Jan Basile, Shaun A. Nguyen, Michael F. Fleming, (unknown)	21

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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