John Um

2.6k total citations
57 papers, 732 citations indexed

About

John Um is a scholar working on Surgery, Biomedical Engineering and Emergency Medicine. According to data from OpenAlex, John Um has authored 57 papers receiving a total of 732 indexed citations (citations by other indexed papers that have themselves been cited), including 46 papers in Surgery, 38 papers in Biomedical Engineering and 13 papers in Emergency Medicine. Recurrent topics in John Um's work include Mechanical Circulatory Support Devices (38 papers), Cardiac Structural Anomalies and Repair (30 papers) and Transplantation: Methods and Outcomes (19 papers). John Um is often cited by papers focused on Mechanical Circulatory Support Devices (38 papers), Cardiac Structural Anomalies and Repair (30 papers) and Transplantation: Methods and Outcomes (19 papers). John Um collaborates with scholars based in United States, Israel and Sweden. John Um's co-authors include Brian D. Lowes, Stephen F. Lowry, Susette M. Coyle, Carmelo A. Milano, Thomas L. Ortel, Ian J. Welsby, Gowthami M. Arepally, Steve E. Calvano, Eugenia Raichlin and Aleem Siddique and has published in prestigious journals such as Circulation, Journal of the American College of Cardiology and PLoS ONE.

In The Last Decade

John Um

52 papers receiving 720 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John Um United States 14 389 264 161 159 124 57 732
Brittney Williams United States 16 200 0.5× 75 0.3× 172 1.1× 62 0.4× 175 1.4× 47 673
Hrvoje Gašparović Croatia 17 411 1.1× 124 0.5× 413 2.6× 61 0.4× 67 0.5× 77 838
Clemens Scherer Germany 15 210 0.5× 249 0.9× 197 1.2× 163 1.0× 80 0.6× 51 720
Jean‐Christian Roussel France 14 421 1.1× 153 0.6× 172 1.1× 55 0.3× 87 0.7× 52 731
Paolo Pepino Italy 13 484 1.2× 207 0.8× 441 2.7× 68 0.4× 201 1.6× 42 837
Antonella Galeone Italy 13 250 0.6× 84 0.3× 280 1.7× 38 0.2× 65 0.5× 42 486
István Hartyánszky Hungary 11 223 0.6× 92 0.3× 210 1.3× 64 0.4× 169 1.4× 106 584
Kimberly S Shockey United States 19 431 1.1× 120 0.5× 147 0.9× 87 0.5× 113 0.9× 27 768
G. Huhle Germany 14 304 0.8× 32 0.1× 320 2.0× 119 0.7× 275 2.2× 31 825
S. Harwood United Kingdom 9 414 1.1× 220 0.8× 47 0.3× 56 0.4× 20 0.2× 13 974

Countries citing papers authored by John Um

Since Specialization
Citations

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

Fields of papers citing papers by John Um

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John Um

This figure shows the co-authorship network connecting the top 25 collaborators of John Um. A scholar is included among the top collaborators of John Um 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 John Um. John Um 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.
Urban, Marian, et al.. (2024). Financial impact of donation after circulatory death heart transplantation: A single‐center analysis. Clinical Transplantation. 38(4). e15296–e15296. 5 indexed citations
2.
Urban, Marian, Anthony W. Castleberry, Aleem Siddique, et al.. (2023). Utilization of Paragonix Sherpapak Cardiac Transport System for the Preservation of Donor Hearts After Circulatory Death. Transplantation Proceedings. 55(9). 1997–2002. 7 indexed citations
3.
Um, John, et al.. (2023). (1064) Economic Impact of Donation after Circulatory Death Heart Transplantation. The Journal of Heart and Lung Transplantation. 42(4). S459–S460. 1 indexed citations
4.
Urban, Marian, Anthony W. Castleberry, Aleem Siddique, et al.. (2023). Impact of donation after circulatory death heart transplantation on waitlist outcomes and transplantation activity. Clinical Transplantation. 37(5). e14942–e14942. 7 indexed citations
5.
Markin, Nicholas W., et al.. (2022). Cardiac function unchanged following reanimation with normothermic regional perfusion in donation after circulatory death. JTCVS Techniques. 15. 136–143. 3 indexed citations
6.
Urban, Marian, Anthony W. Castleberry, Kim Duncan, et al.. (2021). Thoracoabdominal Normothermic Perfusion in Donation After Circulatory Death. The Annals of Thoracic Surgery. 113(6). e473–e476. 5 indexed citations
7.
Urban, Marian, Anthony W. Castleberry, Nicholas W. Markin, et al.. (2021). Successful lung transplantation with graft recovered after thoracoabdominal normothermic perfusion from donor after circulatory death. American Journal of Transplantation. 22(1). 294–298. 25 indexed citations
8.
Birks, Emma J., Stavros G. Drakos, Snehal R. Patel, et al.. (2020). Prospective Multicenter Study of Myocardial Recovery Using Left Ventricular Assist Devices (RESTAGE-HF [Remission from Stage D Heart Failure]). Circulation. 142(21). 2016–2028. 100 indexed citations
9.
Joshi, Anjali, Brian D. Lowes, Haseeb Ilias Basha, et al.. (2019). Elevated Heart Rate Following Heart Transplantation Is Associated With Increased Graft Vasculopathy and Mortality. Journal of Cardiac Failure. 25(4). 249–256. 8 indexed citations
10.
Birks, Emma J., J. Eduardo Rame, Snehal R. Patel, et al.. (2016). Abstract 19838: REmission From Stage D Heart Failure (RESTAGE-HF): Interim Results and Insights From a Prospective Multi-Center Non-Randomized Study of Myocardial Recovery Using LVADs. Circulation. 2 indexed citations
11.
Dhar, Kajari, Fang Qiu, Eugenia Raichlin, et al.. (2016). Targeted myocardial gene expression in failing hearts by RNA sequencing. Journal of Translational Medicine. 14(1). 327–327. 18 indexed citations
12.
Haglund, Nicholas, Valerie Shostrom, John Um, et al.. (2015). Inhaled Milrinone After Left Ventricular Assist Device Implantation. Journal of Cardiac Failure. 21(10). 792–797. 24 indexed citations
13.
Anderson, Daniel R., Michael J. Duryee, Scott Shurmur, et al.. (2014). Unique Antibody Responses to Malondialdehyde-Acetaldehyde (MAA)-Protein Adducts Predict Coronary Artery Disease. PLoS ONE. 9(9). e107440–e107440. 48 indexed citations
14.
Um, John, et al.. (2013). LATE RIGHT HEART FAILURE AFTER LEFT VENTRICULAR ASSIST DEVICE IMPLANTATION: CLINICAL PREDICTORS AND OUTCOMES. Journal of the American College of Cardiology. 61(10). E778–E778. 2 indexed citations
15.
Sandkovsky, Uriel, Diana F. Florescu, John Um, et al.. (2013). Cytomegalovirus reactivation and colitis after left ventricular assist device placement. International Journal of Infectious Diseases. 17(5). e348–e351. 6 indexed citations
16.
Um, John, et al.. (2013). Late Right Heart Failure after Left Ventricular Assist Device Implantation: Clinical Predictors and Outcomes. The Journal of Heart and Lung Transplantation. 32(4). S31–S31. 2 indexed citations
17.
Welsby, Ian J., John Um, Carmelo A. Milano, Thomas L. Ortel, & Gowthami M. Arepally. (2009). Plasmapheresis and Heparin Reexposure as a Management Strategy for Cardiac Surgical Patients with Heparin-Induced Thrombocytopenia. Anesthesia & Analgesia. 110(1). 30–35. 91 indexed citations
18.
Calvano, Jacqueline E., John Um, Doreen M. Agnese, et al.. (2003). Influence of the TNF- α and TNF- β Polymorphisms upon Infectious Risk and Outcome in Surgical Intensive Care Patients. Surgical Infections. 4(2). 163–169. 23 indexed citations
19.
20.
Lee, Sang Eun, et al.. (1995). Isolation of mammalian cell mutants that are X-ray sensitive, impaired in DNA double-strand break repair and defective for V(D)J recombination. Mutation Research/DNA Repair. 336(3). 279–291. 49 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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