G. Sayer

2.8k total citations · 1 hit paper
114 papers, 1.7k citations indexed

About

G. Sayer is a scholar working on Biomedical Engineering, Surgery and Emergency Medicine. According to data from OpenAlex, G. Sayer has authored 114 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 98 papers in Biomedical Engineering, 96 papers in Surgery and 42 papers in Emergency Medicine. Recurrent topics in G. Sayer's work include Mechanical Circulatory Support Devices (97 papers), Cardiac Structural Anomalies and Repair (81 papers) and Cardiac Arrest and Resuscitation (41 papers). G. Sayer is often cited by papers focused on Mechanical Circulatory Support Devices (97 papers), Cardiac Structural Anomalies and Repair (81 papers) and Cardiac Arrest and Resuscitation (41 papers). G. Sayer collaborates with scholars based in United States, Japan and Czechia. G. Sayer's co-authors include Nir Uriel, Daniel Burkhoff, Darshan Doshi, Gene Kim, Valluvan Jeevanandam, Takeyoshi Ota, D. Rodgers, Savitri Fedson, Sirtaz Adatya and Nitasha Sarswat and has published in prestigious journals such as Circulation, Journal of the American College of Cardiology and Journal of Thoracic and Cardiovascular Surgery.

In The Last Decade

G. Sayer

106 papers receiving 1.7k citations

Hit Papers

align trajectories sort by overperformance

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.

Hemodynamics of Mechanical Circulatory Support

2015 378 citations Daniel Burkhoff, G. Sayer et al. Journal of the American College of Cardiology profile →

Author Peers

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

Author						Papers	Cites
G. Sayer	1.5k	1.4k	790	619	121	114	1.7k
Alexander Stepanenko	1.5k 1.0×	1.5k 1.0×	648 0.8×	520 0.8×	140 1.2×	65	1.6k
Diyar Saeed	812 0.5×	781 0.6×	452 0.6×	375 0.6×	135 1.1×	122	1.1k
Stephan Schueler	976 0.6×	1.4k 1.0×	379 0.5×	477 0.8×	232 1.9×	72	1.6k
Michele Esposito	865 0.6×	783 0.6×	546 0.7×	378 0.6×	104 0.9×	59	1.1k
D. Robson	743 0.5×	754 0.5×	340 0.4×	384 0.6×	89 0.7×	69	1.1k
Marc T. Swartz	1.1k 0.7×	1.2k 0.9×	364 0.5×	797 1.3×	155 1.3×	69	1.6k
Ramesh Singh	816 0.5×	727 0.5×	597 0.8×	352 0.6×	121 1.0×	56	1.1k
Maria Mountis	1.1k 0.7×	967 0.7×	558 0.7×	417 0.7×	42 0.3×	40	1.2k
Fabio De Robertis	562 0.4×	1.0k 0.7×	196 0.2×	390 0.6×	168 1.4×	50	1.2k
M Jurmann	671 0.4×	1.1k 0.8×	310 0.4×	501 0.8×	478 4.0×	74	1.5k

Countries citing papers authored by G. Sayer

Since Specialization

Citations

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

Fields of papers citing papers by G. Sayer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of G. Sayer

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

All Works

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20 of 20 papers shown

Abrams, Melinda K., Sanjay Salgado, J. Raikhelkar, et al.. (2025). Screening and Surveillance for Colorectal Cancer Before and After Heart Transplantation. Clinical Transplantation. 39(9). e70301–e70301.

DeFilippis, Ersilia M., G. Sayer, J. Fried, et al.. (2025). PET/CT with Myocardial Blood Flow Assessment Is Prognostic of Cardiac Allograft Vasculopathy Progression and Clinical Outcomes. Journal of Nuclear Medicine. 66(2). 264–270. 2 indexed citations

Acosta‐Ampudia, Yeny, Jay Leb, F. Latif, et al.. (2025). Rilonacept Use in Recurrent Pericarditis After Combined Heart-Liver Transplantation. The Journal of Heart and Lung Transplantation. 44(4). S255–S255.

Shah, Palak, G. Sayer, Shashank S. Sinha, et al.. (2024). Dynamic Risk Estimation of Adverse Events in Ambulatory LVAD Patients. JACC Heart Failure. 12(11). 1898–1912. 2 indexed citations

Oren, Daniel, Ersilia M. DeFilippis, Dor Lotan, et al.. (2024). Elevated Donor-Derived Cell-Free DNA Levels Are Associated With Reduced Myocardial Blood Flow but Not Angiographic Cardiac Allograft Vasculopathy: The EVIDENT Study. Circulation Heart Failure. 18(1). e011756–e011756. 1 indexed citations

Kumar, Sachin, Veli K. Topkara, J. Raikhelkar, et al.. (2024). CAV Trajectories Among Patients With No or Mild CAV at 10 Years Posttransplant. Clinical Transplantation. 38(10). e70009–e70009. 1 indexed citations

Ranard, Lauren S., J. Fried, Koji Takeda, et al.. (2022). Comparison of Risk Models in the Prediction of 30-Day Mortality in Acute Myocardial Infarction–Associated Cardiogenic Shock. Structural Heart. 6(6). 100116–100116. 6 indexed citations

Chung, Ben, Jonathan Grinstein, Teruhiko Imamura, et al.. (2021). Biventricular Pacing Versus Right Ventricular Pacing in Patients Supported With LVAD. JACC. Clinical electrophysiology. 7(8). 1003–1009. 16 indexed citations

Lumish, Heidi, Elizabeth Wang, Raphael J. Rosen, et al.. (2021). USE OF EXTRACORPOREAL CARDIOPULMONARY RESUSCITATION IN A CASE OF CARDIAC ARREST DUE TO ETHYLENE GLYCOL POISONING. Journal of the American College of Cardiology. 77(18). 2301–2301. 3 indexed citations

10.

Imamura, Teruhiko, Ann Nguyen, Gene Kim, et al.. (2018). Optimal Haemodynamics During Left Ventricular Assist Device Support are Associated With Reduced Haemocompatibility-Related Adverse Events. European Journal of Heart Failure. 21(5). 655–662. 53 indexed citations

11.

Imamura, Teruhiko, Gene Kim, J. Raikhelkar, et al.. (2018). Decoupling Between Diastolic Pulmonary Arterial Pressure and Pulmonary Arterial Wedge Pressure at Incremental Left Ventricular Assist Device (LVAD) Speeds Is Associated With Worse Prognosis After LVAD Implantation. Journal of Cardiac Failure. 24(9). 575–582. 14 indexed citations

12.

Uriel, Nir, G. Sayer, Gene Kim, et al.. (2017). CORRELATION OF NONINVASIVE ASSESSMENT OF LUNG FLUID PERCENTAGE WITH INVASIVELY MEASURED HEMODYNAMICS. Journal of the American College of Cardiology. 69(11). 794–794. 1 indexed citations

13.

Addetia, Karima, Nir Uriel, Francesco Maffessanti, et al.. (2017). 3D Morphological Changes in LV and RV During LVAD Ramp Studies. JACC. Cardiovascular imaging. 11(2). 159–169. 48 indexed citations

14.

Tehrani, David M., Jonathan Grinstein, Sara Kalantari, et al.. (2017). Cardiac Output Assessment in Patients Supported with Left Ventricular Assist Device: Discordance Between Thermodilution and Indirect Fick Cardiac Output Measurements. ASAIO Journal. 63(4). 433–437. 12 indexed citations

15.

Kramer, Jason, et al.. (2015). Mechanical Circulatory Support for Peripartum Cardiomyopathy. Journal of Medical Cases. 6(5). 219–220. 1 indexed citations

16.

Retzer, Elizabeth, Savitri Fedson, Gene Kim, et al.. (2015). Successful Percutaneous Trans-Catheter Treatment of Left Ventricular Assist Device Outflow Graft Stenosis with a Covered Stent. ESC Heart Failure. 2(2). 100–102. 13 indexed citations

17.

Uriel, Nir, G. Sayer, Karima Addetia, et al.. (2015). Hemodynamic Ramp Tests in Patients With Left Ventricular Assist Devices. JACC Heart Failure. 4(3). 208–217. 153 indexed citations

18.

Grinstein, Jonathan, Eric Kruse, G. Sayer, et al.. (2015). Accurate Quantification Methods for Aortic Insufficiency Severity in Patients With LVAD. JACC. Cardiovascular imaging. 9(6). 641–651. 48 indexed citations

19.

Burkhoff, Daniel, G. Sayer, Darshan Doshi, & Nir Uriel. (2015). Hemodynamics of Mechanical Circulatory Support. Journal of the American College of Cardiology. 66(23). 2663–2674. 378 indexed citations breakdown →

20.

Sayer, G., Ajith Nair, Michaël Domanski, et al.. (2015). Left Ventricular Assist Devices Improve Functional Class without Normalizing Peak Oxygen Consumption. ASAIO Journal. 61(3). 237–243. 16 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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