Ralf Karger

547 total citations
33 papers, 325 citations indexed

About

Ralf Karger is a scholar working on Biochemistry, Management of Technology and Innovation and Hematology. According to data from OpenAlex, Ralf Karger has authored 33 papers receiving a total of 325 indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Biochemistry, 12 papers in Management of Technology and Innovation and 11 papers in Hematology. Recurrent topics in Ralf Karger's work include Blood transfusion and management (21 papers), Blood donation and transfusion practices (12 papers) and Trauma, Hemostasis, Coagulopathy, Resuscitation (9 papers). Ralf Karger is often cited by papers focused on Blood transfusion and management (21 papers), Blood donation and transfusion practices (12 papers) and Trauma, Hemostasis, Coagulopathy, Resuscitation (9 papers). Ralf Karger collaborates with scholars based in Germany and United States. Ralf Karger's co-authors include V. Kretschmer, Susanne Adam, Norbert Donner­-Banzhoff, Hans‐Helge Müller, M. G. Myriam Hunink, T. Zeiler, Christian Weber, Thomas Frietsch, Ulrich Budde and Jochen A. Werner and has published in prestigious journals such as Transfusion, Platelets and Blood Coagulation & Fibrinolysis.

In The Last Decade

Ralf Karger

32 papers receiving 300 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ralf Karger Germany 11 157 100 91 79 62 33 325
Dania Fischer Germany 12 163 1.0× 97 1.0× 61 0.7× 58 0.7× 49 0.8× 41 340
J.H. Carven United States 7 337 2.1× 159 1.6× 110 1.2× 60 0.8× 142 2.3× 7 466
Elianna Saidenberg Canada 11 179 1.1× 76 0.8× 148 1.6× 43 0.5× 47 0.8× 29 352
Kelly Henrichs United States 13 338 2.2× 121 1.2× 168 1.8× 94 1.2× 70 1.1× 27 507
Jeffrey Carson United States 4 256 1.6× 142 1.4× 79 0.9× 59 0.7× 88 1.4× 8 347
D. Hines United States 9 258 1.6× 71 0.7× 166 1.8× 102 1.3× 21 0.3× 9 407
J. Umlas United States 12 140 0.9× 77 0.8× 64 0.7× 27 0.3× 131 2.1× 21 334
James Burner United States 11 59 0.4× 60 0.6× 102 1.1× 35 0.4× 96 1.5× 21 329
Susanna F. Fustolo‐Gunnink Netherlands 6 153 1.0× 66 0.7× 182 2.0× 29 0.4× 38 0.6× 11 438
M.T. Colotti Italy 8 234 1.5× 80 0.8× 210 2.3× 58 0.7× 22 0.4× 11 377

Countries citing papers authored by Ralf Karger

Since Specialization
Citations

This map shows the geographic impact of Ralf Karger'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 Ralf Karger with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ralf Karger more than expected).

Fields of papers citing papers by Ralf Karger

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ralf Karger. 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 Ralf Karger. The network helps show where Ralf Karger may publish in the future.

Co-authorship network of co-authors of Ralf Karger

This figure shows the co-authorship network connecting the top 25 collaborators of Ralf Karger. A scholar is included among the top collaborators of Ralf Karger 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 Ralf Karger. Ralf Karger is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Karger, Ralf, et al.. (2012). Deformability of Red Blood Cells and Correlation with ATP Content during Storage as Leukocyte-Depleted Whole Blood. Transfusion Medicine and Hemotherapy. 39(4). 277–282. 30 indexed citations
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Karger, Ralf, et al.. (2010). Diagnosis and therapeutic management in a patient with type 2B-like acquired von Willebrand syndrome. Blood Coagulation & Fibrinolysis. 22(2). 144–147. 10 indexed citations
4.
Wiegand, Susanne, Behfar Eivazi, Ralf Karger, et al.. (2009). Surgery in patients with vascular malformations of the head and neck: value of coagulation disorders. Phlebology The Journal of Venous Disease. 24(1). 38–42. 15 indexed citations
5.
Adam, Susanne, Ralf Karger, & V. Kretschmer. (2009). Influence of Different Hydroxyethyl Starch (HES) Formulations on Fibrinogen Measurement in HES-Diluted Plasma. Clinical and Applied Thrombosis/Hemostasis. 16(4). 454–460. 27 indexed citations
6.
Frietsch, Thomas, Ralf Karger, Michael Schöler, et al.. (2008). Leukodepletion of autologous whole blood has no impact on perioperative infection rate and length of hospital stay. Transfusion. 48(10). 2133–2142. 27 indexed citations
7.
Karger, Ralf, Christian Weber, Jan Schmidt, & V. Kretschmer. (2007). Characterization of immune system alterations following preoperative autologous blood donation for elective hip replacement surgery. Transfusion Medicine. 17(1). 45–53. 10 indexed citations
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Karger, Ralf, Norbert Donner­-Banzhoff, Hans‐Helge Müller, V. Kretschmer, & M. G. Myriam Hunink. (2007). Diagnostic performance of the platelet function analyzer (PFA-100®) for the detection of disorders of primary haemostasis in patients with a bleeding history–a systematic review and meta-analysis. Platelets. 18(4). 249–260. 37 indexed citations
10.
Zeiler, T., et al.. (2006). Introducing Anti-HBc Screening in Germany – Possible Implications for the Blood Donation Service. Transfusion Medicine and Hemotherapy. 33(5). 453–458. 3 indexed citations
11.
Karger, Ralf, et al.. (2006). Blood volume regulation in donors undergoing intermittent‐flow plasmapheresis involving a high extracorporeal blood volume. Transfusion. 46(9). 1609–1615. 14 indexed citations
12.
Karger, Ralf, et al.. (2006). In‐line filtration of autologous whole blood. Transfusion. 46(5). 811–817. 8 indexed citations
13.
Karger, Ralf & V. Kretschmer. (2005). Modern concepts of autologous haemotherapy. Transfusion and Apheresis Science. 32(2). 185–196. 9 indexed citations
14.
Zeiler, T., et al.. (2004). The effect of ASA on platelet activation during apheresis and on in‐vitro properties of stored platelet concentrates. Transfusion. 44(9). 1300–1305. 9 indexed citations
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Karger, Ralf & V. Kretschmer. (2002). Inline-filtration. Transfusion and Apheresis Science. 27(2). 137–152. 4 indexed citations
18.
Karger, Ralf & V. Kretschmer. (2000). Preoperative Autologous Blood Donation – Efficacy, Effectiveness, Efficiency. Transfusion Medicine and Hemotherapy. 27(1). 16–22. 6 indexed citations
19.
Kretschmer, V., et al.. (1997). 3a Emergency and massive transfusion. Baillière s Clinical Anaesthesiology. 11(2). 261–276. 3 indexed citations
20.

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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