Igor D. Gregorič

10.4k citations

352 papers · 6.9k indexed · 2 hit papers · h-index 40

Impact in

Emergency Medicine top 0.1%
- Cardiac Arrest and Resuscitation
Surgery top 0.2%
- Cardiac Structural Anomalies and Repair
- Transplantation: Methods and Outcomes

Papers in ⓘ

Surgery 250
- Cardiac Structural Anomalies and Repair 191
- Transplantation: Methods and Outcomes 25
Biomedical Engineering 229
- Mechanical Circulatory Support Devices 227

Co-authors: O.H. Frazier (98 shared papers)Biswajit Kar (135 shared papers)Timothy J. Myers (39 shared papers)Pranav Loyalka (67 shared papers)Reynolds M. Delgado (30 shared papers)O.H. Frazier (35 shared papers)Rajko Radovancevic (50 shared papers)William E. Cohn (27 shared papers)
Journals: The Journal of Heart and Lung Transplantation (54 papers)ASAIO Journal (47 papers)The Annals of Thoracic Surgery (24 papers)Journal of Vascular Surgery (9 papers)Journal of the American College of Cardiology (8 papers)
Partner nations: United States Germany Slovenia

In The Last Decade

Igor D. Gregorič

332 papers receiving 6.7k citations

Hit Papers

align trajectories log scale

Intrapericardial Left Ventricular Assist Device for Advanced Heart Failure 2017 · 488 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2017 New England Journal of Medicine
2012 Circulation

Peers

Countries citing papers authored by Igor D. Gregorič

Since Specialization

Citations

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

Fields of papers citing papers by Igor D. Gregorič

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Igor D. Gregorič. 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 Igor D. Gregorič. The network helps show where Igor D. Gregorič may publish in the future.

Co-authors

The 25 scholars most cited alongside Igor D. Gregorič, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Igor D. Gregorič Line = papers co-authored together Igor D. Gregorič links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 352 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Intrapericardial Left Ventricular Assist Device for Advanced Heart Failure New England Journal of Medicine ·Joseph G. Rogers, Francis D. Pagani, Antone Tatooles, Geetha Bhat, Mark S. Slaughter, Emma J. Birks, Steven W. Boyce, Samer S. Najjar, Valluvan Jeevanandam, Allen S. Anderson, Igor D. Gregorič, Hari R. Mallidi, Katrin Leadley, Keith D. Aaronson, O.H. Frazier, Carmelo A. Milano Hit paper breakdown →	2017	488
2	Use of an Intrapericardial, Continuous-Flow, Centrifugal Pump in Patients Awaiting Heart Transplantation Circulation ·Keith D. Aaronson, Mark S. Slaughter, Leslie W. Miller, Edwin C. McGee, William Cotts, Michael A. Acker, Mariell Jessup, Igor D. Gregorič, Pranav Loyalka, O.H. Frazier, Valluvan Jeevanandam, Allen S. Anderson, Robert L. Kormos, J.J. Teuteberg, Wayne C. Levy, David C. Naftel, Richard M. Bittman, Francis D. Pagani, David R. Hathaway, Steven W. Boyce Hit paper breakdown →	2012	456
3	Arteriovenous malformation and gastrointestinal bleeding in patients with the HeartMate II left ventricular assist device The Journal of Heart and Lung Transplantation ·Zumrut T. Demirozu, Rajko Radovancevic, Lyone F. Hochman, Igor D. Gregorič, George V. Letsou, Biswajit Kar, Roberta C. Bogaev, O.H. Frazier	2011	272
4	HeartWare ventricular assist system for bridge to transplant: Combined results of the bridge to transplant and continued access protocol trial The Journal of Heart and Lung Transplantation ·Mark S. Slaughter, Francis D. Pagani, Edwin C. McGee, Emma J. Birks, William Cotts, Igor D. Gregorič, O.H. Frazier, Timothy B. Icenogle, Samer S. Najjar, Steven W. Boyce, Michael A. Acker, Ranjit John, David R. Hathaway, Kevin B. Najarian, Keith D. Aaronson	2013	241
5	The Percutaneous Ventricular Assist Device in Severe Refractory Cardiogenic Shock Journal of the American College of Cardiology ·Biswajit Kar, Igor D. Gregorič, Sukhdeep S. Basra, Gary M. Idelchik, Pranav Loyalka	2010	213
6	PREVENtion of HeartMate II Pump Thrombosis Through Clinical Management: The PREVENT multi-center study The Journal of Heart and Lung Transplantation ·Simon Maltais, Ahmet Kılıç, Sriram Nathan, Mary Keebler, Sitaramesh Emani, John Ransom, Jason N. Katz, Brett C. Sheridan, Andreas Brieke, Gregory F. Egnaczyk, John W. Entwistle, Robert Adamson, John M. Stulak, Nir Uriel, John B. O’Connell, David J. Farrar, Kartik S. Sundareswaran, Igor D. Gregorič	2016	185
7	Gastrointestinal bleeding from arteriovenous malformations in patients supported by the Jarvik 2000 axial-flow left ventricular assist device The Journal of Heart and Lung Transplantation ·George V. Letsou, Nyma A. Shah, Igor D. Gregorič, Timothy J. Myers, Reynolds M. Delgado, O.H. Frazier	2005	162
8	End-organ Function in Patients on Long-term Circulatory Support With Continuous- or Pulsatile-flow Assist Devices The Journal of Heart and Lung Transplantation ·Branislav Radovančević, Bojan Vrtovec, Elizabeth de Kort, Rajko Radovancevic, Igor D. Gregorič, O.H. Frazier	2007	127
9	Initial Clinical Experience With the Jarvik 2000 Implantable Axial-Flow Left Ventricular Assist System Circulation ·O.H. Frazier, Timothy J. Myers, Igor D. Gregorič, Tehreen Khan, Reynolds M. Delgado, Mihai Croitoru, Kathy Ann Miller, Robert Jarvik, Stephen Westaby	2002	124
10	Research and development of an implantable, axial-flow left ventricular assist device: the Jarvik 2000 Heart The Annals of Thoracic Surgery ·O.H. Frazier, Timothy J. Myers, Robert Jarvik, Stephen Westaby, David Pigott, Igor D. Gregorič, Tehreen Khan, D. Tamez, Jeff L. Conger, Michael P. Macris	2001	104
11	Clinical experience with an implantable, intracardiac, continuous flow circulatory support device: physiologic implications and their relationship to patient selection The Annals of Thoracic Surgery ·O.H. Frazier, Timothy J. Myers, Stephen Westaby, Igor D. Gregorič	2004	103
12	Endothelial Dysfunction and Its Clinical Implications Angiology ·Pavel Poredoš, Aleksandra Visnovic Poredos, Igor D. Gregorič	2021	96
13	Assessment of Arterial Blood Pressure During Support With an Axial Flow Left Ventricular Assist Device The Journal of Heart and Lung Transplantation ·Timothy J. Myers, Mathius Bolmers, Igor D. Gregorič, Biswajit Kar, O.H. Frazier	2009	95
14	Clinical experience with the TandemHeart percutaneous ventricular assist device. PubMed ·Biswajit Kar, Lindsay E Adkins, Andrew B. Civitello, Pranav Loyalka, Nanthini Palanichamy, Courtney Gemmato, Timothy J. Myers, Igor D. Gregorič, Reynolds M. Delgado	2006	89
15	Use of the Jarvik 2000 Left Ventricular Assist System as a Bridge to Heart Transplantation or as Destination Therapy for Patients With Chronic Heart Failure Annals of Surgery ·O.H. Frazier, Timothy J. Myers, Stephen Westaby, Igor D. Gregorič	2003	81
16	In-situ replacement and extra-anatomic bypass for the treatment of infected abdominal aortic grafts European Journal of Vascular Surgery ·Michael J. Jacobs, George J. Reul, Igor D. Gregorič, Denton A. Cooley	1991	80
17	First clinical use of the redesigned HeartMate II left ventricular assist system in the United States: a case report. PubMed ·O.H. Frazier, Reynolds M. Delgado, Biswajit Kar, Vijay Patel, Igor D. Gregorič, Timothy J. Myers	2004	80
18	Inhaled nitric oxide after left ventricular assist device implantation: A prospective, randomized, double-blind, multicenter, placebo-controlled trial The Journal of Heart and Lung Transplantation ·Evgenij Potapov, Dan M. Meyer, Madhav Swaminathan, Michael A. E. Ramsay, Aly El Banayosy, Christoph Diehl, Bryan Veynovich, Igor D. Gregorič, Marian Kukucka, T. Gromann, Nándor Marczin, Kanti Chittuluru, James Baldassarre, Mark Zucker, Roland Hetzer	2011	78
19	Dobutamine stress echocardiography predicts myocardial improvement in patients supported by left ventricular assist devices (LVADs): hemodynamic and histologic evidence of improvement before LVAD explantation The Journal of Heart and Lung Transplantation ·Tehreen Khan, Reynolds M. Delgado, B Radovancĕvić, Guillermo Torre‐Amione, Jackie Abrams, Kathy Ann Miller, Timothy J. Myers, Kristen Okerberg, Sonny J. Stetson, Igor D. Gregorič, A. P. Hernandez, O.H. Frazier	2003	74
20	Intramyocardial Implantation of CD133 + Stem Cells Improved Cardiac Function without Bypass Surgery The Heart Surgery Forum ·Hans-Martin Klein, Ali Ghodsizad, Ralph Marktanner, L. Poll, Tobias Voelkel, Mahvash Hasani, Christoph Piechaczek, N. Feifel, Marcus Stockschlaeder, Elmar R. Burchardt, Biswajit Kar, Igor D. Gregorič, E. Gams	2006	65

About Igor D. Gregorič

Igor D. Gregorič is a scholar working on Surgery, Biomedical Engineering, Cardiology and Cardiovascular Medicine, Emergency Medicine and Pulmonary and Respiratory Medicine, having authored 352 papers that have together received 6.9k indexed citations. Recurring topics across this work include Mechanical Circulatory Support Devices (227 papers), Cardiac Structural Anomalies and Repair (191 papers), Cardiac Arrest and Resuscitation (79 papers), Cardiac Valve Diseases and Treatments (60 papers), Cardiac pacing and defibrillation studies (27 papers), Congenital Heart Disease Studies (26 papers), Transplantation: Methods and Outcomes (25 papers) and Aortic Disease and Treatment Approaches (21 papers). The work is most often cited by research in Emergency Medicine (2.5k citations), Surgery (5.5k citations), Biomedical Engineering (5.1k citations), Cardiology and Cardiovascular Medicine (2.3k citations) and Pulmonary and Respiratory Medicine (827 citations). Igor D. Gregorič has collaborated with scholars based in United States, Germany and Slovenia. Frequent co-authors include O.H. Frazier, Biswajit Kar, Timothy J. Myers, Pranav Loyalka, Reynolds M. Delgado, O.H. Frazier, Rajko Radovancevic, William E. Cohn, Branislav Radovančević and George J. Reul. Their work appears in journals such as The Journal of Heart and Lung Transplantation, ASAIO Journal, The Annals of Thoracic Surgery, Journal of Vascular Surgery and Journal of the American College of Cardiology.

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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