A. A. Klein

9.5k total citations · 1 hit paper
137 papers, 4.8k citations indexed

About

A. A. Klein is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Biochemistry. According to data from OpenAlex, A. A. Klein has authored 137 papers receiving a total of 4.8k indexed citations (citations by other indexed papers that have themselves been cited), including 50 papers in Cardiology and Cardiovascular Medicine, 48 papers in Surgery and 41 papers in Biochemistry. Recurrent topics in A. A. Klein's work include Blood transfusion and management (41 papers), Cardiac, Anesthesia and Surgical Outcomes (39 papers) and Trauma, Hemostasis, Coagulopathy, Resuscitation (28 papers). A. A. Klein is often cited by papers focused on Blood transfusion and management (41 papers), Cardiac, Anesthesia and Surgical Outcomes (39 papers) and Trauma, Hemostasis, Coagulopathy, Resuscitation (28 papers). A. A. Klein collaborates with scholars based in United Kingdom, Australia and Germany. A. A. Klein's co-authors include Martin Besser, Toby Richards, Alan Ashworth, Erik Ortmann, Timothy Collier, Linda Sharples, George Djaiani, Ben Clevenger, Nick Fletcher and David Cardone and has published in prestigious journals such as Nature, The Lancet and SHILAP Revista de lepidopterología.

In The Last Decade

A. A. Klein

132 papers receiving 4.7k citations

Hit Papers

Recommendations for stand... 2021 2026 2022 2024 2021 40 80 120
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.

  1. Recommendations for standards of monitoring during anaesthesia and recovery 2021
    2021 125 citations A. A. Klein et al. Anaesthesia profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
A. A. Klein 1.7k 1.6k 1.4k 1.3k 961 137 4.8k
Stuart A. McCluskey 1.3k 0.7× 3.0k 1.9× 1.8k 1.3× 1.4k 1.1× 1.2k 1.3× 146 6.3k
Jeremiah R. Brown 1.3k 0.8× 2.1k 1.3× 2.0k 1.4× 1.4k 1.1× 911 0.9× 170 5.9k
Colleen G. Koch 2.5k 1.4× 2.0k 1.2× 1.9k 1.4× 1.5k 1.1× 564 0.6× 107 5.6k
Jonathan H. Waters 2.5k 1.4× 1.7k 1.1× 724 0.5× 1.7k 1.3× 497 0.5× 158 5.4k
Daryl J. Kor 1.2k 0.7× 1.2k 0.8× 827 0.6× 1.3k 1.0× 1.6k 1.6× 161 4.8k
Gavin J. Murphy 2.1k 1.2× 2.4k 1.5× 1.8k 1.3× 1.5k 1.2× 894 0.9× 165 5.7k
Yves Ozier 1.3k 0.8× 2.7k 1.7× 822 0.6× 2.6k 2.0× 498 0.5× 144 6.1k
Donald S. Likosky 1.5k 0.9× 3.0k 1.9× 3.1k 2.2× 1.3k 1.0× 1.6k 1.7× 245 6.4k
Victor A. Ferraris 1.9k 1.1× 3.4k 2.1× 4.1k 2.9× 1.3k 1.0× 1.3k 1.4× 109 7.5k
Elizabeth Yetisir 2.5k 1.4× 840 0.5× 720 0.5× 1.7k 1.3× 647 0.7× 30 5.1k

Countries citing papers authored by A. A. Klein

Since Specialization
Citations

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

Fields of papers citing papers by A. A. Klein

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of A. A. Klein

This figure shows the co-authorship network connecting the top 25 collaborators of A. A. Klein. A scholar is included among the top collaborators of A. A. Klein 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 A. A. Klein. A. A. Klein 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.
Shah, Akshay, A. A. Klein, Seema Agarwal, et al.. (2025). Association of Anaesthetists guidelines: the use of blood components and their alternatives. Anaesthesia. 80(4). 425–447. 2 indexed citations
2.
3.
Ahmed, Aamer, et al.. (2023). A Narrative Review of Clinical Decision Support Systems for Perioperative Bleeding Management in Cardiac Surgery. Journal of Cardiothoracic and Vascular Anesthesia. 37(9). 1804–1812. 3 indexed citations
4.
Wiles, M. D., et al.. (2023). Position statement from the Editors of Anaesthesia and Anaesthesia Reports on best practice in academic medical publishing. Anaesthesia. 78(9). 1139–1146. 4 indexed citations
5.
Shelton, Cliff, A. A. Klein, Craig R. Bailey, & Kariem El‐Boghdadly. (2021). The Anaesthesia Case Report (ACRE) checklist: a tool to promote high‐quality reporting of cases in peri‐operative practice. Anaesthesia. 76(8). 1077–1081. 9 indexed citations
6.
Richards, Toby, Ravishankar Rao Baikady, Ben Clevenger, et al.. (2021). Preoperative intravenous iron for anaemia in elective major open abdominal surgery: the PREVENTT RCT. Health Technology Assessment. 25(11). 1–58. 11 indexed citations
7.
Múñoz, Manuel, AG Acheson, Elvira Bisbe, et al.. (2018). An international consensus statement on the management of postoperative anaemia after major surgical procedures. Anaesthesia. 73(11). 1418–1431. 149 indexed citations
8.
9.
Lockey, David, Kate Crewdson, Gareth E. Davies, et al.. (2017). AAGBI: Safer pre‐hospital anaesthesia 2017. Anaesthesia. 72(3). 379–390. 91 indexed citations
10.
Bartoszko, Justyna, Leon Vorobeichik, Mohandas Jayarajah, et al.. (2017). Defining clinically important perioperative blood loss and transfusion for the Standardised Endpoints for Perioperative Medicine (StEP) collaborative: a protocol for a scoping review. BMJ Open. 7(6). e016743–e016743. 4 indexed citations
11.
Clevenger, Ben, Kurinchi Selvan Gurusamy, A. A. Klein, et al.. (2016). Systematic Review and Meta-Analysis of Iron Therapy in Anaemic Adults without Chronic Kidney Disease: Updated and Abridged Cochrane Review. European Journal of Heart Failure. 18(7). 774–785. 50 indexed citations
12.
Rahe‐Meyer, Niels, Jerrold H. Levy, C. David Mazer, et al.. (2016). Randomized evaluation of fibrinogen vs placebo in complex cardiovascular surgery (REPLACE): a double-blind phase III study of haemostatic therapy. British Journal of Anaesthesia. 117(1). 41–51. 91 indexed citations
13.
Ortmann, Erik, et al.. (2015). Validation of viscoelastic coagulation tests during cardiopulmonary bypass. Journal of Thrombosis and Haemostasis. 13(7). 1207–1216. 38 indexed citations
14.
Hung, Matthew, Erik Ortmann, Martin Besser, et al.. (2014). A prospective observational cohort study to identify the causes of anaemia and association with outcome in cardiac surgical patients. Heart. 101(2). 107–112. 61 indexed citations
15.
Arrowsmith, Joseph E., et al.. (2010). Deep hypothermic circulatory arrest. Continuing Education in Anaesthesia Critical Care & Pain. 10(5). 138–142. 31 indexed citations
16.
Kunstýř, Jan, A. A. Klein, Jaroslav Lindner, et al.. (2008). Use of High-Thoracic Epidural Analgesia in Pulmonary Endarterectomy: A Randomized Feasibility Study. The Heart Surgery Forum. 11(4). E202–E208. 5 indexed citations
17.
Ghosh, Sunit, A. A. Klein, Mahesh Prabhu, Florian Falter, & Joseph E. Arrowsmith. (2008). The Papworth BiVent tube: a feasibility study of a novel double-lumen endotracheal tube and bronchial blocker in human cadavers. British Journal of Anaesthesia. 101(3). 424–428. 4 indexed citations
18.
Calvert, Patrick A. & A. A. Klein. (2008). Anaesthesia for percutaneous closure of atrial septal defects. Continuing Education in Anaesthesia Critical Care & Pain. 8(1). 16–20. 9 indexed citations
19.
Klein, A. A., et al.. (2008). Portable ventilators. Continuing Education in Anaesthesia Critical Care & Pain. 8(6). 199–203. 5 indexed citations
20.
Michaels, Andrew D., A. A. Klein, & Kanu Chatterjee. (2003). Effects of intravenous nesiritide on coronary vasomotor regulation and myocardial oxygen extraction. Journal of the American College of Cardiology. 41(6). 205–205. 1 indexed citations

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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