Guillermo Lema

741 total citations
48 papers, 469 citations indexed

About

Guillermo Lema is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Nephrology. According to data from OpenAlex, Guillermo Lema has authored 48 papers receiving a total of 469 indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Cardiology and Cardiovascular Medicine, 24 papers in Surgery and 10 papers in Nephrology. Recurrent topics in Guillermo Lema's work include Cardiac, Anesthesia and Surgical Outcomes (18 papers), Cardiac and Coronary Surgery Techniques (14 papers) and Acute Kidney Injury Research (9 papers). Guillermo Lema is often cited by papers focused on Cardiac, Anesthesia and Surgical Outcomes (18 papers), Cardiac and Coronary Surgery Techniques (14 papers) and Acute Kidney Injury Research (9 papers). Guillermo Lema collaborates with scholars based in Chile, United States and Ecuador. Guillermo Lema's co-authors include Jorge Urzúa, Roberto Canessa, Sergio Morán, Manuel Irarrázaval, Gladys Meneses, Ricardo Zalaquett, Jorge Dagnino, Guillermo Bugedo, Andrés Valdivieso and Hernán R. Muñoz and has published in prestigious journals such as SHILAP Revista de lepidopterología, Anesthesiology and Anesthesia & Analgesia.

In The Last Decade

Guillermo Lema

42 papers receiving 449 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Guillermo Lema Chile 12 271 207 144 68 62 48 469
Roberto Canessa Chile 11 260 1.0× 186 0.9× 138 1.0× 56 0.8× 59 1.0× 38 426
Frédérique Ryckwaert France 9 290 1.1× 161 0.8× 125 0.9× 28 0.4× 41 0.7× 12 418
V. Salandin Italy 8 298 1.1× 214 1.0× 209 1.5× 53 0.8× 20 0.3× 21 502
Giuseppe Simini Italy 6 230 0.8× 170 0.8× 215 1.5× 41 0.6× 17 0.3× 6 420
Paolo Michielon Italy 4 235 0.9× 173 0.8× 215 1.5× 42 0.6× 17 0.3× 6 393
Kyung‐Don Hahm South Korea 12 146 0.5× 135 0.7× 95 0.7× 88 1.3× 43 0.7× 28 390
Sergio Morán Chile 12 363 1.3× 280 1.4× 126 0.9× 39 0.6× 11 0.2× 50 534
Keshav Kubal United States 7 154 0.6× 283 1.4× 80 0.6× 95 1.4× 73 1.2× 9 518
D. Jacobson United Kingdom 4 131 0.5× 211 1.0× 82 0.6× 87 1.3× 15 0.2× 5 358
W. Geisser Germany 11 129 0.5× 208 1.0× 53 0.4× 63 0.9× 74 1.2× 21 401

Countries citing papers authored by Guillermo Lema

Since Specialization
Citations

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

Fields of papers citing papers by Guillermo Lema

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Guillermo Lema

This figure shows the co-authorship network connecting the top 25 collaborators of Guillermo Lema. A scholar is included among the top collaborators of Guillermo Lema 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 Guillermo Lema. Guillermo Lema 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.
Lema, Guillermo, et al.. (2025). Beyond Redefining Success: Ethical and Human Dimensions of Cardiac Surgery in Africa. The Annals of Thoracic Surgery.
2.
3.
Lema, Guillermo. (2013). Ulinastatin treatment and renal injury in patients undergoing aortic valve replacement with cardiopulmonary bypass. A note of aution. Korean journal of anesthesiology. 64(1). 91–91. 1 indexed citations
4.
Elgueta, María Francisca, et al.. (2012). Should we monitor with bispectral index in all patients at high risk for seizures in the operating room?. Revista Española de Anestesiología y Reanimación. 60(8). 469–471. 2 indexed citations
5.
Lema, Guillermo, et al.. (2011). Aortic Stenosis and Acquired von Willebrand Disease: Lack of Association. Journal of Cardiothoracic and Vascular Anesthesia. 25(4). 615–618. 6 indexed citations
6.
Lema, Guillermo, et al.. (2006). Renal function and cardiopulmonary bypass in pediatric cardiac surgical patients. Pediatric Nephrology. 21(10). 1446–1451. 13 indexed citations
7.
Urzúa, Jorge, et al.. (1999). Hemodilution does not alter the aortic-to-femoral arterial pressure difference in dogs.. Journal of Clinical Monitoring and Computing. 15(7/8). 429–433. 2 indexed citations
8.
Oberli, Christian, Jorge Urzúa, Claudia G. Sáez, et al.. (1999). An Expert System for Monitor Alarm Integration. Journal of Clinical Monitoring and Computing. 15(1). 29–35. 33 indexed citations
9.
Urzúa, Jorge, et al.. (1999). Cardiopulmonary bypass: new strategies for weaning from cardiopulmonary bypass. Current Opinion in Anaesthesiology. 12(1). 21–27. 1 indexed citations
10.
Urzúa, Jorge, et al.. (1999). Renal Preservation in the Perioperative Period. International Anesthesiology Clinics. 37(2). 111–124. 1 indexed citations
11.
Urzúa, Jorge, et al.. (1998). Estimation of Ventricular Volume and Elastance from the Arterial Pressure Waveform. Journal of Clinical Monitoring and Computing. 14(3). 177–181. 1 indexed citations
12.
Lema, Guillermo, Jorge Urzúa, Roberto Canessa, et al.. (1998). Renal Protection in Patients Undergoing Cardiopulmonary Bypass with Preoperative Abnormal Renal Function. Anesthesia & Analgesia. 86(1). 3–8. 35 indexed citations
13.
Lema, Guillermo & Roberto Canessa. (1998). Phenylephrine, Dopamine, Mannitol, and Renal Protection During Cardiopulmonary Bypass. Anesthesia & Analgesia. 87(6). 1459–1459. 1 indexed citations
14.
Lema, Guillermo, Roberto Canessa, & Jorge Urzúa. (1998). Renal preservation in cardiac surgery. Current Opinion in Anaesthesiology. 11(1). 9–13. 5 indexed citations
15.
Urzúa, Jorge, Gladys Meneses, Guillermo Lema, et al.. (1997). Arterial Pressure-Flow Relationship in Patients Undergoing Cardiopulmonary Bypass. Anesthesia & Analgesia. 84(5). 958–963. 10 indexed citations
16.
Lema, Guillermo, Gladys Meneses, Jorge Urzúa, et al.. (1995). Effects of Extracorporeal Circulation on Renal Function in Coronary Surgical Patients. Anesthesia & Analgesia. 81(3). 446–451. 44 indexed citations
17.
Urzúa, Jorge, et al.. (1994). Thermoregulatory vasoconstriction increases the difference between femoral and radial arterial pressures. Journal of Clinical Monitoring and Computing. 10(4). 229–236. 11 indexed citations
18.
Urzúa, Jorge, Guillermo Bugedo, Roberto Canessa, et al.. (1992). Renal function and cardiopulmonary bypass: Effect of perfusion pressure. Journal of Cardiothoracic and Vascular Anesthesia. 6(3). 299–303. 80 indexed citations
19.
Angeli, Maria, Manuel Velasco, Orlando F. Bueno, et al.. (1992). Double‐Blind Placebo‐Controlled Trial of Terazosin Effect on Blood Pressure and Urinary Output of Dopamine in Hypertensive Patients. The Journal of Clinical Pharmacology. 32(9). 816–821. 2 indexed citations
20.
Lema, Guillermo, Jorge Urzúa, Sergio Morán, & Roberto Canessa. (1991). Successful Anesthetic Management of a Patient with Hypokalemic Familial Periodic Paralysis Undergoing Cardiac Surgery. Anesthesiology. 74(2). 373–374. 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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