Rafael J. Ramírez

3.5k total citations · 1 hit paper
36 papers, 2.5k citations indexed

About

Rafael J. Ramírez is a scholar working on Cardiology and Cardiovascular Medicine, Molecular Biology and Cellular and Molecular Neuroscience. According to data from OpenAlex, Rafael J. Ramírez has authored 36 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Cardiology and Cardiovascular Medicine, 19 papers in Molecular Biology and 7 papers in Cellular and Molecular Neuroscience. Recurrent topics in Rafael J. Ramírez's work include Cardiac electrophysiology and arrhythmias (26 papers), Cardiac Arrhythmias and Treatments (17 papers) and Ion channel regulation and function (13 papers). Rafael J. Ramírez is often cited by papers focused on Cardiac electrophysiology and arrhythmias (26 papers), Cardiac Arrhythmias and Treatments (17 papers) and Ion channel regulation and function (13 papers). Rafael J. Ramírez collaborates with scholars based in United States, Canada and Spain. Rafael J. Ramírez's co-authors include Stanley Nattel, Marc Courtemanche, Peter H. Backx, Rajan Sah, Gavin Y. Oudit, Carsten Zobel, Kalyanam Shivkumar, Shiro Nakahara, Aman Mahajan and Dominica Gidrewicz and has published in prestigious journals such as Circulation, Journal of the American College of Cardiology and PLoS ONE.

In The Last Decade

Rafael J. Ramírez

35 papers receiving 2.5k citations

Hit Papers

align trajectories

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.

Ionic mechanisms underlying human atrial action potential properties: insights from a mathematical model

1998 880 citations Marc Courtemanche, Rafael J. Ramírez et al. American Journal of Physiology-Heart and Circulatory Physiology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Rafael J. Ramírez United States	22	2.2k	1.0k	384	101	94	36	2.5k
Sandeep V. Pandit United States	23	2.7k 1.2×	1.4k 1.3×	464 1.2×	70 0.7×	67 0.7×	47	3.0k
Bum‐Rak Choi United States	29	1.8k 0.8×	1.5k 1.4×	532 1.4×	104 1.0×	167 1.8×	73	2.5k
Justus Anumonwo United States	28	2.3k 1.1×	2.0k 1.9×	653 1.7×	46 0.5×	142 1.5×	49	3.0k
I. Kodama Japan	23	1.4k 0.6×	973 0.9×	514 1.3×	62 0.6×	41 0.4×	60	1.7k
Jośe L. Puglisi United States	21	1.4k 0.6×	1.3k 1.3×	523 1.4×	43 0.4×	51 0.5×	54	1.9k
Evgeny P. Anyukhovsky United States	27	1.9k 0.9×	1.2k 1.1×	364 0.9×	72 0.7×	113 1.2×	55	2.2k
Antoni C.G. van Ginneken Netherlands	25	1.9k 0.9×	1.5k 1.5×	649 1.7×	41 0.4×	54 0.6×	48	2.2k
Steven Girouard United States	15	1.5k 0.7×	737 0.7×	240 0.6×	84 0.8×	39 0.4×	27	1.7k
Leighton T. Izu United States	28	1.5k 0.7×	1.5k 1.5×	620 1.6×	29 0.3×	142 1.5×	72	2.2k
Anthony Varghese United States	18	1.0k 0.5×	931 0.9×	410 1.1×	47 0.5×	36 0.4×	35	1.3k

Countries citing papers authored by Rafael J. Ramírez

Since Specialization

Citations

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

Fields of papers citing papers by Rafael J. Ramírez

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Rafael J. Ramírez. 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 Rafael J. Ramírez. The network helps show where Rafael J. Ramírez may publish in the future.

Co-authorship network of co-authors of Rafael J. Ramírez

This figure shows the co-authorship network connecting the top 25 collaborators of Rafael J. Ramírez. A scholar is included among the top collaborators of Rafael J. Ramírez 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 Rafael J. Ramírez. Rafael J. Ramírez 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

Choi, Young Hwan, et al.. (2025). Tissue elasticity modulates cardiac pacemaker cell automaticity. American Journal of Physiology-Heart and Circulatory Physiology. 328(4). H978–H990.

Lynch, Christopher S., Rafael J. Ramírez, Alex Y. Tan, et al.. (2023). Mechanisms of adaptive hypertrophic cardiac remodeling in a large animal model of premature ventricular contraction‐induced cardiomyopathy. IUBMB Life. 75(11). 926–940. 2 indexed citations

Lynch, Christopher S., Rafael J. Ramírez, Alex Y. Tan, et al.. (2022). Alterations of sarcoplasmic reticulum-mediated Ca2+ uptake in a model of premature ventricular contraction (PVC)-induced cardiomyopathy. Molecular and Cellular Biochemistry. 478(7). 1447–1456. 3 indexed citations

Álvarez, Alba, Rafael J. Ramírez, Guadalupe Guerrero‐Serna, et al.. (2020). Transcriptome and proteome mapping in the sheep atria reveal molecular featurets of atrial fibrillation progression. Cardiovascular Research. 117(7). 1760–1775. 17 indexed citations

Takemoto, Yoshio, Rafael J. Ramírez, Kuljeet Kaur, et al.. (2017). Eplerenone Reduces Atrial Fibrillation Burden Without Preventing Atrial Electrical Remodeling. Journal of the American College of Cardiology. 70(23). 2893–2905. 44 indexed citations

Schweigmann, Ulrich, Péter Biliczki, Rafael J. Ramírez, et al.. (2014). Elevated Heart Rate Triggers Action Potential Alternans and Sudden Death. Translational Study of a Homozygous KCNH2 Mutation. PLoS ONE. 9(8). e103150–e103150. 5 indexed citations

Bizy, Alexandra, Guadalupe Guerrero‐Serna, Bin Hu, et al.. (2013). Myosin light chain 2-based selection of human iPSC-derived early ventricular cardiac myocytes. Stem Cell Research. 11(3). 1335–1347. 77 indexed citations

Zhang, Jun, Ji Youn Youn, Antony Y. Kim, et al.. (2012). NOX4-Dependent Hydrogen Peroxide Overproduction in Human Atrial Fibrillation and HL-1 Atrial Cells: Relationship to Hypertension. Frontiers in Physiology. 3. 140–140. 48 indexed citations

Ajijola, Olujimi A., Rafael J. Ramírez, Michael M. Laks, et al.. (2011). Abstract 14010: ST Segment Shortening Without QT Interval Shortening is a Unique and Novel Marker of Asymmetric Cardiac Sympathetic Activation. Circulation. 124. 1 indexed citations

10.

Ramírez, Rafael J., Olujimi A. Ajijola, Wei Zhou, et al.. (2011). A new electrocardiographic marker for sympathetic nerve stimulation: modulation of repolarization by stimulation of stellate ganglia. Journal of Electrocardiology. 44(6). 694–699. 23 indexed citations

11.

Zhou, Wei, et al.. (2011). Interstitial norepinephrine levels and local electrophysiological properties of the myocardium during sympathetic nerve activation. The FASEB Journal. 25(S1). 1 indexed citations

12.

Nakahara, Shiro, Marmar Vaseghi, Rafael J. Ramírez, et al.. (2011). Characterization of myocardial scars: Electrophysiological imaging correlates in a porcine infarct model. Heart Rhythm. 8(7). 1060–1067. 27 indexed citations

13.

Tung, Roderick, Shiro Nakahara, Rafael J. Ramírez, et al.. (2010). Accuracy of combined endocardial and epicardial electroanatomic mapping of a reperfused porcine infarct model: A comparison of electrofield and magnetic systems with histopathologic correlation. Heart Rhythm. 8(3). 439–447. 11 indexed citations

14.

Nakahara, Shiro, Roderick Tung, Rafael J. Ramírez, et al.. (2010). Distribution of late potentials within infarct scars assessed by ultra high-density mapping. Heart Rhythm. 7(12). 1817–1824. 51 indexed citations

15.

Nakahara, Shiro, Roderick Tung, Rafael J. Ramírez, et al.. (2010). Characterization of the Arrhythmogenic Substrate in Ischemic and Nonischemic Cardiomyopathy. Journal of the American College of Cardiology. 55(21). 2355–2365. 154 indexed citations

16.

Sah, Rajan, Rafael J. Ramírez, Gavin Y. Oudit, et al.. (2003). Regulation of cardiac excitation–contraction coupling by action potential repolarization: role of the transient outward potassium current (I_to). The Journal of Physiology. 546(1). 5–18. 217 indexed citations

17.

Sah, Rajan, Rafael J. Ramírez, & Peter H. Backx. (2002). Modulation of Ca ²⁺ Release in Cardiac Myocytes by Changes in Repolarization Rate. Circulation Research. 90(2). 165–173. 122 indexed citations

18.

Kneller, James, Rafael J. Ramírez, Denis Chartier, Marc Courtemanche, & Stanley Nattel. (2002). Time-dependent transients in an ionically based mathematical model of the canine atrial action potential. American Journal of Physiology-Heart and Circulatory Physiology. 282(4). H1437–H1451. 50 indexed citations

19.

Oudit, Gavin Y., Zamaneh Kassiri, Rajan Sah, et al.. (2001). The Molecular Physiology of the Cardiac Transient Outward Potassium Current (Ito) in Normal and Diseased Myocardium. Journal of Molecular and Cellular Cardiology. 33(5). 851–872. 143 indexed citations

20.

Sah, Rajan, Rafael J. Ramírez, Roger Kaprielian, & Peter H. Backx. (2001). Alterations in action potential profile enhance excitation‐contraction coupling in rat cardiac myocytes. The Journal of Physiology. 533(1). 201–214. 70 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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