Karim S. Ladha

6.1k total citations · 1 hit paper
153 papers, 3.3k citations indexed

About

Karim S. Ladha is a scholar working on Surgery, Anesthesiology and Pain Medicine and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Karim S. Ladha has authored 153 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 57 papers in Surgery, 41 papers in Anesthesiology and Pain Medicine and 39 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Karim S. Ladha's work include Cardiac, Anesthesia and Surgical Outcomes (36 papers), Anesthesia and Pain Management (32 papers) and Opioid Use Disorder Treatment (27 papers). Karim S. Ladha is often cited by papers focused on Cardiac, Anesthesia and Surgical Outcomes (36 papers), Anesthesia and Pain Management (32 papers) and Opioid Use Disorder Treatment (27 papers). Karim S. Ladha collaborates with scholars based in Canada, United States and United Kingdom. Karim S. Ladha's co-authors include Tobias Kurth, Brian T. Bateman, Duminda N. Wijeysundera, Matthias Eikermann, Patrick Olivier, Hance Clarke, Duncan McLean, Dan Jackson, Cassim Ladha and Stephanie D. Grabitz and has published in prestigious journals such as JAMA, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Karim S. Ladha

140 papers receiving 3.3k 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.

Perioperative Opioid Administration

2020 160 citations Harsha Shanthanna, Karim S. Ladha et al. Anesthesiology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Karim S. Ladha Canada	30	1.3k	1.0k	820	586	481	153	3.3k
Matthew B. Weinger United States	41	2.5k 1.9×	1.3k 1.3×	1.4k 1.7×	625 1.1×	322 0.7×	200	6.7k
Marina Englesakis Canada	28	802 0.6×	407 0.4×	422 0.5×	463 0.8×	444 0.9×	118	3.6k
Chia‐Hui Chen Taiwan	34	423 0.3×	228 0.2×	328 0.4×	244 0.4×	286 0.6×	176	3.5k
Johann Steurer Switzerland	37	1.5k 1.1×	127 0.1×	592 0.7×	414 0.7×	1.3k 2.8×	192	5.4k
Klaus Hauer Germany	44	1.2k 0.9×	63 0.1×	2.0k 2.4×	1.3k 2.2×	485 1.0×	156	11.9k
Miriam Vollenbroek-Hutten Netherlands	38	371 0.3×	94 0.1×	321 0.4×	937 1.6×	329 0.7×	205	5.2k
Patrick Tighe United States	26	802 0.6×	383 0.4×	539 0.7×	321 0.5×	193 0.4×	123	3.2k
Jayna Holroyd‐Leduc Canada	40	758 0.6×	262 0.3×	805 1.0×	765 1.3×	227 0.5×	187	5.7k
Suzanne Timmons Ireland	33	257 0.2×	496 0.5×	248 0.3×	446 0.8×	104 0.2×	161	3.9k
DaiWai M. Olson United States	45	616 0.5×	234 0.2×	1.3k 1.6×	529 0.9×	1.2k 2.6×	308	8.2k

Countries citing papers authored by Karim S. Ladha

Since Specialization

Citations

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

Fields of papers citing papers by Karim S. Ladha

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Karim S. Ladha. 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 Karim S. Ladha. The network helps show where Karim S. Ladha may publish in the future.

Co-authorship network of co-authors of Karim S. Ladha

This figure shows the co-authorship network connecting the top 25 collaborators of Karim S. Ladha. A scholar is included among the top collaborators of Karim S. Ladha 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 Karim S. Ladha. Karim S. Ladha 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

Savage, Rachel, et al.. (2025). Association of loneliness and social isolation with postoperative outcomes: a retrospective registry study. British Journal of Anaesthesia. 136(1). 247–254.

Ladha, Karim S., et al.. (2025). Sustained mood improvement with laughing gas exposure (SMILE): a randomised, placebo-controlled pilot trial of nitrous oxide for treatment-resistant depression. BJPsych Open. 11(5). e208–e208.

Plitman, Eric, et al.. (2024). Oral ketamine for acute postoperative analgesia (OKAPA) trial: A randomized controlled, single center pilot study. Journal of Clinical Anesthesia. 100. 111690–111690. 1 indexed citations

Goel, Akash, et al.. (2024). Perioperative Naltrexone Management: A Scoping Review by the Perioperative Pain and Addiction Interdisciplinary Network. Anesthesiology. 141(2). 388–399. 1 indexed citations

Ladha, Karim S., et al.. (2024). Psychotherapy for Ketamine’s Enhanced Durability in Chronic Neuropathic Pain: Protocol for a Pilot Randomized Controlled Trial. JMIR Research Protocols. 13. e54406–e54406. 1 indexed citations

Hauck, Tanya S., Karim S. Ladha, Bernard Le Foll, Duminda N. Wijeysundera, & Paul Kurdyak. (2023). Postoperative buprenorphine continuation in stabilized buprenorphine patients: A population cohort study. Addiction. 118(10). 1953–1964. 1 indexed citations

Chesney, Tyler R., Camilla L. Wong, Andrea C. Tricco, et al.. (2022). Frailty assessment tools for use by surgeons when evaluating older adults prior to surgery: a scoping review protocol. BMJ Open. 12(7). e061951–e061951. 3 indexed citations

Ajrawat, Prabjit, Yi Yang, Timothy Leroux, et al.. (2022). Medical Cannabis Use and Inflammatory Cytokines and Chemokines Among Adult Chronic Pain Patients. Cannabis and Cannabinoid Research. 9(1). 267–281. 11 indexed citations

Liu, Helen, et al.. (2022). Nitrous oxide for the treatment of psychiatric disorders: A systematic review of the clinical trial landscape. Acta Psychiatrica Scandinavica. 146(2). 126–138. 14 indexed citations

10.

Diep, Calvin, Wiebke Gandhi, Carien M. van Reekum, et al.. (2022). Pain severity and pain interference during major depressive episodes treated with escitalopram and aripiprazole adjunctive therapy: a CAN-BIND-1 report. Psychiatry Research. 312. 114557–114557. 3 indexed citations

11.

Goel, Akash, et al.. (2022). Acute Pain Management for a Tibial Plateau Fracture Shortly After a Buprenorphine XR Depot Injection: A Case Report. Journal of Addiction Medicine. 16(5). 599–601. 4 indexed citations

12.

Katz, Joel, et al.. (2022). Ketamine Assisted Psychotherapy: A Systematic Narrative Review of the Literature. Journal of Pain Research. Volume 15. 1691–1706. 54 indexed citations

13.

Ladha, Karim S., Nikhil Mistry, Duminda N. Wijeysundera, et al.. (2021). Recent cannabis use and myocardial infarction in young adults: a cross-sectional study. Canadian Medical Association Journal. 193(35). E1377–E1384. 33 indexed citations

14.

Bethell, Jennifer, Mark D. Neuman, Brian T. Bateman, et al.. (2020). Age and postoperative opioid prescriptions: a population‐based cohort study of opioid‐naïve adults. Pharmacoepidemiology and Drug Safety. 29(4). 504–509. 11 indexed citations

15.

Shanthanna, Harsha, Karim S. Ladha, Henrik Kehlet, & Girish P. Joshi. (2020). Perioperative Opioid Administration. Anesthesiology. 134(4). 645–659. 160 indexed citations breakdown →

16.

Ladha, Karim S., et al.. (2020). Perioperative pain and addiction interdisciplinary network (PAIN): protocol for the perioperative management of cannabis and cannabinoid-based medicines using a modified Delphi process. BMJ Open. 10(7). e036472–e036472. 3 indexed citations

17.

Goel, Akash, Naheed Jivraj, Duminda N. Wijeysundera, et al.. (2019). Cannabis Use Disorder and Perioperative Outcomes in Major Elective Surgeries. Anesthesiology. 132(4). 625–635. 74 indexed citations

18.

Khan, James S., Karim S. Ladha, Faraj W. Abdallah, & Hance Clarke. (2019). Treating Persistent Pain After Breast Cancer Surgery. Drugs. 80(1). 23–31. 34 indexed citations

19.

Shin, Christina H., Dustin R. Long, Duncan McLean, et al.. (2017). Effects of Intraoperative Fluid Management on Postoperative Outcomes. Annals of Surgery. 267(6). 1084–1092. 166 indexed citations

20.

Levine, Alexander, et al.. (2014). Weight based heparin dosing for thromboembolic disease is associated with earlier anticoagulation in surgical patients. International Journal of Surgery. 12(12). 1416–1419.

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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