P. R. O’Connell

14.4k citations

221 papers · 8.0k · 2 hit papers · h-index 50

Impact in

Rheumatology top 0.2%
- Pelvic floor disorders treatments
Gastroenterology top 1%
- Gastrointestinal motility and disorders

Papers in

Surgery 77
- Anorectal Disease Treatments and Outcomes 17
- Hernia repair and management 8
- Diverticular Disease and Complications 8
Rheumatology 70
- Pelvic floor disorders treatments 66

Co-authors: Colm O’Herlihy (43 shared papers)Neil G. Docherty (16 shared papers)John P. Burke (16 shared papers)John Calvin Coffey (15 shared papers)Michael Behan (15 shared papers)Norman S. Williams (3 shared papers)Christopher Bulstrode (1 shared paper)Desmond C. Winter (18 shared papers)
Journals: British journal of surgery (35 papers)Diseases of the Colon & Rectum (21 papers)Colorectal Disease (15 papers)BJOG An International Journal of Obstetrics & Gynaecology (8 papers)Annals of Surgery (8 papers)
Partner nations: Ireland United Kingdom Australia

In The Last Decade

P. R. O’Connell

213 papers receiving 7.7k citations

P. R. O’Connell's Hit Papers

align trajectories log scale

When ELIZA meets therapists: A Turing test for the heart and mind 2025 · 24 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.

2025 PLOS mental health.
1968 Bailey and Love's Short Practice of Surgery

Peers

Countries citing papers authored by P. R. O’Connell

Since Specialization

Citations

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

Fields of papers citing papers by P. R. O’Connell

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside P. R. O’Connell, 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 P. R. O’Connell Line = papers co-authored together P. R. O’Connell 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 221 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Bailey and Love's Short Practice of Surgery Norman S. Williams, Christopher Bulstrode, P. R. O’Connell Hit paper breakdown →	1968	458
2	Desulfovibrio Bacterial Species Are Increased in Ulcerative Colitis Diseases of the Colon & Rectum ·Fiachra Rowan, Neil G. Docherty, Madeline Murphy, Thomas Brendan Murphy, John Calvin Coffey, P. R. O’Connell	2010	270
3	Fibrogenesis in Crohn's Disease The American Journal of Gastroenterology ·John P. Burke, Jürgen Mulsow, Conor O’Keane, Neil G. Docherty, R. William G. Watson, P. R. O’Connell	2006	226
4	Spatial variation of the colonic microbiota in patients with ulcerative colitis and control volunteers Gut ·Aonghus Lavelle, G. Lennon, Órla O’Sullivan, Neil G. Docherty, Áine Balfe, Aoife Maguire, Hugh Mulcahy, Glen Doherty, Diarmuid O’Donoghue, John Hyland, R. Paul Ross, John Calvin Coffey, Kieran Sheahan, Paul D. Cotter, Fergus Shanahan, D. C. Winter, P. R. O’Connell	2015	224
5	Effect of second vaginal delivery on anorectal physiology and faecal continence: a prospective study The Lancet ·Michelle Fynes, Valerie Donnelly, Michael Behan, P. R. O’Connell, Colm O’Herlihy	1999	176
6	Sulphate-reducing bacteria and hydrogen sulphide in the aetiology of ulcerative colitis British journal of surgery ·Fiachra Rowan, Neil G. Docherty, John Calvin Coffey, P. R. O’Connell	2009	164
7	The abundance of Akkermansia muciniphila and its relationship with sulphated colonic mucins in health and ulcerative colitis Scientific Reports ·Helen Earley, Gráinne Lennon, Áine Balfe, John Calvin Coffey, Desmond C. Winter, P. R. O’Connell	2019	164
8	Enteric bacteriology, absorption, morphology and emptying after ileal pouch–anal anastomosis British journal of surgery ·P. R. O’Connell, David Rankin, L. H. Weiland, K. A. Kelly	1986	154
9	NEUTROPHIL APOPTOSIS IS DELAYED IN PATIENTS WITH INFLAMMATORY BOWEL DISEASE Shock ·Ann Brannigan, P. R. O’Connell, Hilary Hurley, Amanda O’Neill, Hugh R. Brady, John M. Fitzpatrick, R. William, G. Watson	2000	150
10	Effect of anterior resection on anal sphincter function British journal of surgery ·Paul G. Horgan, P. R. O’Connell, C. A. Shinkwin, W. O. Kirwan	1989	146
11	A systematic review of sacral nerve stimulation mechanisms in the treatment of fecal incontinence and constipation Neurogastroenterology & Motility ·Emma V. Carrington, Judith Evers, Ugo Grossi, Phil G. Dinning, S. Mark Scott, P. R. O’Connell, James F. Jones, Charles H. Knowles	2014	137
12	Does rectal mucosa regenerate after ileonal anastomosis? Diseases of the Colon & Rectum ·P. R. O’Connell, John H. Pembérton, L. H. Weiland, Robert W. Beart, Roger R. Dozois, B. G. Wolff, Robert L. Telander	1987	134
13	A randomized clinical trial comparing primary overlap with approximation repair of third-degree obstetric tears American Journal of Obstetrics and Gynecology ·Myra Fitzpatrick, Michael Behan, P. R. O’Connell, Colm O’Herlihy	2000	130
14	Transanal Endoscopic Microsurgery Versus Standard Transanal Excision for the Removal of Rectal Neoplasms Diseases of the Colon & Rectum ·Cillian Clancy, John P. Burke, Mathew R. Albert, P. R. O’Connell, Desmond C. Winter	2015	127
15	Does the angle of episiotomy affect the incidence of anal sphincter injury?* BJOG An International Journal of Obstetrics & Gynaecology ·Maeve Eogan, Leslie Daly, P. R. O’Connell, Colm O’Herlihy	2006	125
16	A Meta-Analysis of Surgical Morbidity and Recurrence After Laparoscopic and Open Repair of Primary Unilateral Inguinal Hernia Annals of Surgery ·Elma A. O'Reilly, John P. Burke, P. R. O’Connell	2012	122
17	Emerging role of hydrogen sulfide in colonic physiology and pathophysiology Inflammatory Bowel Diseases ·Mekki Medani, Danielle Collins, Neil G. Docherty, Alan W. Baird, P. R. O’Connell, D. C. Winter	2010	113
18	A prospective, randomized study comparing the effect of augmented biofeedback with sensory biofeedback alone on fecal incontinence after obstetric trauma Diseases of the Colon & Rectum ·Michelle Fynes, Kaye Marshall, Mary Cassidy, Michael Behan, Deirdre Walsh, P. R. O’Connell, Colm O’Herlihy	1999	106
19	A collaborative review of the current concepts and challenges of anastomotic leaks in colorectal surgery Colorectal Disease ·Abigail Vallance, Steven D. Wexner, Mariana Berho, Ronan A. Cahill, Mark Coleman, N. Haboubi, Richard J. Heald, Robin H. Kennedy, Brendan Moran, N. J. Mortensen, R W Motson, Richard Novell, P. R. O’Connell, Frédéric Ris, Tim Rockall, Apurbalal Senapati, Alastair Windsor, David Jayne	2016	103
20	Evidence for a decrease in substance P content of substantia nigra in Huntington's chorea Brain Research ·Ichiro Kanazawa, Edward J. Bird, P. R. O’Connell, David Powell	1977	103

About P. R. O’Connell

P. R. O’Connell is a scholar working on Surgery, Rheumatology, Oncology, Genetics and Molecular Biology, having authored 221 papers that have together received 8.0k indexed citations. Recurring topics across this work include Pelvic floor disorders treatments (66 papers), Colorectal Cancer Surgical Treatments (27 papers), Inflammatory Bowel Disease (20 papers), Anorectal Disease Treatments and Outcomes (17 papers), Gut microbiota and health (8 papers), Hernia repair and management (8 papers), Diverticular Disease and Complications (8 papers) and Cardiac, Anesthesia and Surgical Outcomes (7 papers). The work is most often cited by research in Rheumatology (2.0k citations), Gastroenterology (442 citations), Surgery (2.6k citations), Oncology (1.4k citations) and Urology (213 citations). P. R. O’Connell has collaborated with scholars based in Ireland, United Kingdom and Australia. Frequent co-authors include Colm O’Herlihy, Neil G. Docherty, John P. Burke, John Calvin Coffey, Michael Behan, Norman S. Williams, Christopher Bulstrode, Desmond C. Winter, D. C. Winter and Myra Fitzpatrick. Their work appears in journals such as British journal of surgery, Diseases of the Colon & Rectum, Colorectal Disease, BJOG An International Journal of Obstetrics & Gynaecology and Annals of Surgery.

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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In The Last Decade

P. R. O’Connell

P. R. O’Connell's Hit Papers

Peers

Countries citing papers authored by P. R. O’Connell

Fields of papers citing papers by P. R. O’Connell

All Works

About P. R. O’Connell

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