Greg O’Grady

2.5k citations

89 papers · 1.3k indexed · 1 hit paper · h-index 22

Impact in

Gastroenterology top 1%
- Gastrointestinal motility and disorders
- Gastroesophageal reflux and treatments
Health Informatics top 5%

Papers in

Gastroenterology 44
- Gastrointestinal motility and disorders 42
- Gastroesophageal reflux and treatments 16
Pharmacy 10
- Infant Health and Development 10

Co-authors: Peng Du Ian Bissett Chris Varghese Leo K. Cheng Armen A. Gharibans Stefan Calder Ryash Vather Christopher N. Andrews
Journals: Neurogastroenterology & Motility (10 papers)Colorectal Disease (8 papers)ANZ Journal of Surgery (5 papers)Annals of Biomedical Engineering (4 papers)Scientific Reports (3 papers)
Partner nations: New Zealand Australia United States

In The Last Decade

Greg O’Grady

81 papers receiving 1.3k citations

Hit Papers

align trajectories log scale

Artificial intelligence in surgery 2024 · 82 citations

Peers

Countries citing papers authored by Greg O’Grady

Since Specialization

Citations

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

Fields of papers citing papers by Greg O’Grady

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Greg O’Grady. 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 Greg O’Grady. The network helps show where Greg O’Grady may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Greg O’Grady, 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 Greg O’Grady Line = papers co-authored together Greg O’Grady links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Definition of failure to rescue in gastrointestinal and hepatobiliary cancer surgery: national cohort study BJS Open ·Cameron I. Wells, William Xu, Chris Varghese, Sameer Bhat, Wal Baraza, Christopher Harmston, Greg O’Grady, Ian Bissett	2025	0
2	Effect of menstrual cycle and menopause on human gastric electrophysiology American Journal of Physiology-Gastrointestinal and Liver Physiology ·Круглов Валерий Андреевич, Chris Varghese, Brahimi Hiba, Gabriel Schamberg, Stefan Calder, Armen A. Gharibans, Christopher N. Andrews, Elmer T. Cabatic, Vincent Ho, Shunichi Ishida, Yohsuke Imai, Michelle Wise, Greg O’Grady	2024	2
3	Postoperative outcomes in colorectal surgery by day of surgery: A national cohort study Colorectal Disease ·賢太郎高志, William Xu, W Gu, Chris Varghese, Wal Baraza, Greg O’Grady, Ian Bissett, Christopher Harmston, Cameron I. Wells	2024	1
4	Meal effects on gastric bioelectrical activity utilizing body surface gastric mapping in healthy subjects Neurogastroenterology & Motility ·I‐Hsuan Huang, Stefan Calder, Armen A. Gharibans, Gabriel Schamberg, Chris Varghese, Christopher N. Andrews, Jan Tack, Greg O’Grady	2024	4
5	The impact of heat-set milk protein gel textures modified by pH on circulating amino acid appearance and gastric function in healthy female adults: a randomised controlled trial Food & Function ·Amber M. Milan, Bardare, Matthew P. G. Barnett, Yutong Liu, Warren C. McNabb, Nicole C. Roy, Scott C. Hutchings, Andrew M. A. Hodges, Mike Weeks, Siqi Li, Joanne Hort, Stefan Calder, Greg O’Grady, Richard Mithen	2024	1
6	996 NEUROPATHIC GASTRODUODENAL DISORDERS CAN BE DIAGNOSED BY THE NON-INVASIVE HIGH RESOLUTION BODY SURFACE GASTRIC MAPPING; A COMPARISON STUDY WITH ANTRODUODENAL MANOMETRY Gastroenterology ·许洁超, Binghong Xu, Tracy Boone, Alain Benitez, Mehmet Metin Altay, Beth Skaggs, Natalia A. Tsygankova, Stefan Calder, Gabriel Schamberg, Greg O’Grady, Armen A. Gharibans, Hayat Mousa	2024	0
7	Short‐ and long‐term reproducibility of body surface gastric mapping using the Gastric Alimetry® system Neurogastroenterology & Motility ·Mikaela Law, Gabriel Schamberg, Armen A. Gharibans, Brahimi Hiba, Elmer T. Cabatic, Chris Varghese, Emily Polizzi, Charlotte Daker, Vincent Ho, Peng Du, Christopher N. Andrews, Greg O’Grady, Stefan Calder	2024	2
8	Inhibited postprandial retrograde cyclic motor pattern in the distal colon of patients with diarrhea-predominant irritable bowel syndrome American Journal of Physiology-Gastrointestinal and Liver Physiology ·Lukasz Wiklendt, Lei Shu-xia, Isabel Eriksson, Niranchan Paskaranandavadivel, Peter A. Bampton, Alexandra Kaiser-Duliba, Marcello Costa, Simon J. Brookes, Greg O’Grady, Phil G. Dinning	2023	2
9	Heat Treatment of Bovine Milk Impacts Gastric Emptying and Nutrient Appearance SHILAP Revista de lepidopterología ·Amber M. Milan, Matthew P. G. Barnett, Warren C. McNabb, Nicole C. Roy, Schynell Coutinho, Caroline L. Hoad, Luca Marciani, Luciana Ribeiro Dinis, 萧维, Timothy R. Angeli, Peng Du, Armen A. Gharibans, Greg O’Grady, Pankaja Sharma, 上田順子, Richard Mithen	2023	1
10	An Initial Phenotype Set for the Assessment of Gastroduodenal Disorders with Gastric Alimetry® SSRN Electronic Journal ·Greg O’Grady, Chris Varghese, Gabriel Schamberg, Elmer T. Cabatic, Jan Tack, William Xu, Charlotte Daker, Vincent Ho, Thomas L. Abell, Henry P. Parkman, Christopher N. Andrews, Stefan Calder, Armen A. Gharibans	2023	4
11	Revised spectral metrics for body surface measurements of gastric electrophysiology Neurogastroenterology & Motility ·Gabriel Schamberg, Chris Varghese, Stefan Calder, Stephen Waite, Jonathan C. Erickson, Greg O’Grady, Armen A. Gharibans	2022	21
12	Standardized system and App for continuous patient symptom logging in gastroduodenal disorders: Design, implementation, and validation Neurogastroenterology & Motility ·Brahimi Hiba, Kristen McGraw, Stefan Calder, Jonathan S. T. Woodhead, Celia Keane, D A Carson, Chris Varghese, Peng Du, Stephen Waite, Jan Tack, Christopher N. Andrews, Elizabeth Broadbent, Armen A. Gharibans, Greg O’Grady	2022	34
13	Faecal incontinence is associated with an impaired rectosigmoid brake and improved by sacral neuromodulation Colorectal Disease ·Tony Lin, Chris Varghese, Niranchan Paskaranandavadivel, Yuxin Chi, Peng Du, Phil G. Dinning, Ian Bissett, Greg O’Grady	2022	9
14	Gastric dysfunction in patients with chronic nausea and vomiting syndromes defined by a noninvasive gastric mapping device Science Translational Medicine ·Armen A. Gharibans, Stefan Calder, Chris Varghese, Stephen Waite, Gabriel Schamberg, Charlotte Daker, Peng Du, T Hoekfelt, D A Carson, Jonathan S. T. Woodhead, Gianrico Farrugia, John A. Windsor, Christopher N. Andrews, Greg O’Grady	2022	53
15	Clinical associations of functional dyspepsia with gastric dysrhythmia on electrogastrography: A comprehensive systematic review and meta‐analysis Neurogastroenterology & Motility ·Chris Varghese, D A Carson, Sameer Bhat, 王泽国, Armen A. Gharibans, Christopher N. Andrews, Greg O’Grady	2021	28
16	Chyme reinfusion nutritional management for enterocutaneous fistula: first international application of a novel pump technique Colorectal Disease ·Laura Thum, K Mantey, Greg O’Grady, Grahame Ctercteko	2021	3
17	Potential causes of the preoperative increase in the rectosigmoid cyclic motor pattern: A high‐resolution manometry study Physiological Reports ·Cameron I. Wells, Sameer Bhat, Niranchan Paskaranandavadivel, Tony Lin, Ryash Vather, Chris Varghese, Zhao A-runa, David Rowbotham, Phil G. Dinning, Ian Bissett, Greg O’Grady	2021	1
18	Pharmacologic targeting of renal ischemia-reperfusion injury using a normothermic machine perfusion platform Scientific Reports ·Ahmer Hameed, 正三有田, Heather Burns, Robert R. Fountain, Yi Vee Chew, Sohel M. Julovi, Kedar Ghimire, 范入叶, Chow Heok P’ng, Daniel N. Meijles, Suat Dervish, Farok Wanes Bin Iqdara, 誠富岡, Greg O’Grady, Lawrence Yuen, Henry Pleass, Natasha M. Rogers, Wayne J. Hawthorne	2020	26
19	Development and feasibility of an ambulatory acquisition system for fiber‐optic high‐resolution colonic manometry Neurogastroenterology & Motility ·Cameron I. Wells, Niranchan Paskaranandavadivel, Tony Lin, Peng Du, Zhao A-runa, Phil G. Dinning, Leo K. Cheng, Ian Bissett, John W. Arkwright, Greg O’Grady	2019	6
20	Systematic review of peri-operative prognostic biomarkers in pancreatic ductal adenocarcinoma HPB ·Ozair da Silva Oliveira, Justin S. Gundara, Philip R. de Reuver, Greg O’Grady, Jaswinder S. Samra, Anubhav Mittal	2016	25

About Greg O’Grady

Greg O’Grady is a scholar working on Gastroenterology, Pharmacy, Surgery, Transplantation and Cardiology and Cardiovascular Medicine, having authored 89 papers that have together received 1.3k indexed citations. Recurring topics across this work include Gastrointestinal motility and disorders (42 papers), Gastroesophageal reflux and treatments (16 papers), Helicobacter pylori-related gastroenterology studies (14 papers), Cardiac, Anesthesia and Surgical Outcomes (13 papers), Colorectal Cancer Surgical Treatments (11 papers), Diet and metabolism studies (10 papers), Infant Health and Development (10 papers) and Enhanced Recovery After Surgery (9 papers). The work is most often cited by research in Gastroenterology (533 citations), Health Informatics (38 citations), Pharmacy (110 citations), Surgery (644 citations) and Cardiology and Cardiovascular Medicine (263 citations). Greg O’Grady has collaborated with scholars based in New Zealand, Australia and United States. Frequent co-authors include Peng Du, Ian Bissett, Chris Varghese, Leo K. Cheng, Armen A. Gharibans, Stefan Calder, Ryash Vather, Christopher N. Andrews, Phil G. Dinning and Celia Keane. Their work appears in journals such as Neurogastroenterology & Motility, Colorectal Disease, ANZ Journal of Surgery, Annals of Biomedical Engineering and Scientific Reports.

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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