Ralph John Nicholls: Influence Statistics

Ralph John Nicholls

Ralph John Nicholls

Colorectal Surgery, Imperial College, London, UK | Visiting Professor in Colorectal Surgery, Imperial College London, London, UK. | Emeritus Consultant Surgeon, St Mark’s ...


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Ralph John Nicholls: Expert Impact

Concepts for which Ralph John Nicholls has direct influence: Restorative proctocolectomy , Faecal incontinence , Ulcerative colitis , Sacral nerve stimulation , Rectal cancer , Fecal incontinence , Internal anal sphincter .

Ralph John Nicholls: KOL impact

Concepts related to the work of other authors for which for which Ralph John Nicholls has influence: Ulcerative colitis , Rectal cancer , Fecal incontinence , Restorative proctocolectomy , Inflammatory bowel disease , Sacral nerve stimulation , Ileal pouch .

KOL Resume for Ralph John Nicholls

Year
2022

Colorectal Surgery, Imperial College, London, UK

2019

Department of Surgery and Cancer, Imperial College, London W2, UK

2018

Fareed Iqbal, MBChB, BMedSci (Hons), MRCS (Eng), Sir Alan Park's Department of Physiology, St Mark's Hospital, London, England. Valerie Van der Ploeg, MSc, Sir Alan Department of Physiology, St Mark's Hospital, London, England. Franklin Adaba, MRCS (Eng), MBBS, Sir Alan Park's Department of Physiology, St Mark's Hospital, London, England. Alan Askari, MBChB, MRCS (Eng), Surgical Epidemiology, Trials and Outcomes Centre (SETOC), St Mark's Hospital, London, England. Jamie Murphy, PhD, MB ChirB, FRCS, Department of Surgery and Cancer, Imperial College London, St Mary's Hospital, Paddington, London, England. R. John Nicholls, MS, FRCS, Sir Alan Park's Department of Physiology, St Mark's Hospital, London, England. Carolynne Vaizey, MBBS, FCS, FRCS, Sir Alan Park's Department of Physiology, St Mark's Hospital, London, England.

2017

Department of Surgery and Cancer Imperial College St Mary's Hospital Campus London UK

2016

St Mark's Hospital and Academic Institute Sir Alan Parks’ Department of Physiology Harrow UK

2015

Emeritus Consultant Surgeon, St Mark’s Hospital, London, England, UK

Department of Surgery, St Mark’s Hospital and Academic Institute, Harrow, United Kingdom

2014

Department of Biosurgery and Surgical Technology, Imperial College, London, UK

Division of Surgery, Imperial College, St Mary's Hospital, London.

2013

St Mark’s Hospital and Academic Institute, London, UK

Colorectal Eporediensis Centre, S. Rita Clinc, Vercelli, Italy

2012

Department of Colorectal Surgery, St Mark's Hospital, Harrow, London, United Kingdom

The Sir Alan Parks Physiology Unit, St Mark's Hospital and Academic Institute, Watford Road, Harrow HA1 3UJ, UK

2011

Department of Biosurgery and Surgical Technology, Imperial College, Chelsea and Westminster Hospital, London, UK

Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,...

2010

Department of Surgery, Imperial College London, St Mary's Hospital, Imperial College London, London

2009

St. Mark's Hospital, Department of Surgery, Harrow, UK

Department of Biosurgery and Surgical Technology, Imperial College, London, United Kingdom

2008

PP Tekkis is a Senior Lecturer and an Honorary Consultant Surgeon and RJ Nicholls is Visiting Professor of Colorectal Surgery and Emeritus Consultant Surgeon at St Mary's Hospital, Imperial College, London, UK.

Department of Biosurgery and Surgical Technology, Imperial College London, London

St. Mark's Hospital, Harrow, Middlesex, United Kingdom

2007

Department of Surgery, St Mark’s Hospital, Harrow, Middlesex

2006

Department of Surgery, St Mark’s Hospital, Harrow, UK

St Mark's Academic Institute, St Mark's Hospital, Harrow

Prominent publications by Ralph John Nicholls

KOL-Index: 14482 . OBJECTIVE: To describe national reoperation rates after elective and emergency colorectal resection and to assess the feasibility of using reoperation as a quality indicator derived from routinely collected data in England. DESIGN: Retrospective observational study of Hospital Episode Statistics (HES) data. SETTING: HES dataset, an administrative dataset covering the entire English ...
Known for Colorectal Surgery | Episode Statistics | Health Quality Indicators | Outcome Measures
KOL-Index: 14387 . BACKGROUND: Preliminary data suggest that short-term antibiotic therapy with a single drug is effective for the treatment of patients with pouchitis. However, some patients are resistant to treatment. AIM: To evaluate the therapeutic efficacy of a prolonged course of a combination of two antibiotics in patients with refractory or recurrent pouchitis, as well as its impact on their quality ...
Known for Patients Pouchitis | Quality Life | Metronidazole Ciprofloxacin | Bowel Disease
KOL-Index: 12206 . One hundred and four patients were treated by restorative proctocolectomy with ileal reservoir for ulcerative colitis and familial polyposis. Three different designs of reservoir were used (triple loop 68, double loop 13, quadruple loop 23). There were no postoperative deaths but six (5.8 per cent) had the reservoir removed. Rates for pelvic sepsis were 25, 15 and 13 per cent, and for ...
Known for Ileal Reservoir | Ulcerative Colitis | Restorative Proctocolectomy | Cent Patients
KOL-Index: 12115 . Defects of the external anal sphincter have traditionally been diagnosed by palpation, anal manometry and electromyography (EMG), but anal endosonography enables clear imaging of both the internal and external sphincter muscles. A study was performed to validate the interpretation of ultrasonographic images of external sphincter defects using histology as a 'gold standard'. In addition the ...
Known for Anal Endosonography | External Sphincter | Clinical Examination | Incontinence Female
KOL-Index: 12098 . OBJECTIVE: Using meta-analytical techniques, the study compared postoperative adverse events and functional outcomes of stapled versus hand-sewn ileal pouch-anal anastomosis (IPAA) following restorative proctocolectomy. BACKGROUND: The choice of mucosectomy and hand-sewn versus stapled pouch-anal anastomosis has been a subject of debate with no clear consensus as to which method provides ...
Known for Stapled Ipaa | Pouch Anal | Sewn Versus | Postoperative Complications
KOL-Index: 11707 . OBJECTIVE: Restorative proctocolectomy (RPC) with or without mucosectomy is the treatment of choice for most patients with ulcerative colitis (UC) requiring surgery. The ileal mucosa in the reservoir and the anorectal columnar epithelium below the ileo-anal anastomosis are at risk of neoplastic transformation. METHOD: The literature has been reviewed to identify patients developing this ...
Known for Restorative Proctocolectomy | Ulcerative Colitis | Patients Dysplasia | Ileal Mucosa
KOL-Index: 11074 . BACKGROUND: Colonic motor function has not been studied in the ambulatory setting over a prolonged period in the unprepared state. Furthermore, the disturbance of this function in patients with faecal incontinence is unknown. AIM: To study colonic function over two to three days in the ambulatory, unprepared state in health and in patients with idiopathic faecal incontinence. METHODS: Six ...
Known for Faecal Incontinence | Gastrointestinal Transit | Ambulatory Colonic | Pressure Waves
KOL-Index: 11059 . BACKGROUND: Unilateral posterior tibial nerve stimulation has been shown to improve fecal incontinence in the short term. Posterior tibial nerve stimulation is believed to work by stimulation of the ascending afferent spinal pathways. Bilateral stimulation may activate more of these pathways. This may lead to an improved therapeutic effect. OBJECTIVE: The aim of this study was to assess ...
Known for Fecal Incontinence | Tibial Nerve | Bilateral Transcutaneous | 6 Weeks
KOL-Index: 11042 . OBJECTIVE: To compare cancer-specific results of local excision with major resection. BACKGROUND: Technological advances have enabled endoscopic and local excision techniques to be applied in the treatment of early colorectal cancer in preference to radical surgery. METHOD: Patients with stage 0 (carcinoma in situ) or stage I (T1/2N0M0) adenocarcinoma of the colon or rectum undergoing ...
Known for Local Excision | Survival Outcome | Radical Resection | Rectal Cancer
KOL-Index: 10376 . BACKGROUND AND METHOD: This systematic review assesses the efficacy and safety of sacral nerve stimulation (SNS) for faecal incontinence and constipation. Electronic databases and selected websites were searched for studies evaluating SNS in the treatment of faecal incontinence or constipation. Primary outcome measures included episodes of faecal incontinence per week (faecal incontinence ...
Known for Faecal Incontinence | Sns Constipation | Sacral Nerve Stimulation | Evacuations Week
KOL-Index: 10272 . BACKGROUND: Restorative proctocolectomy with ileal pouch-anal anastomosis is the procedure of choice for the majority of patients with ulcerative colitis who require surgery. Over 2500 patients in the UK have undergone restorative proctocolectomy. It is now increasingly being performed in district general hospitals as well as in specialist inflammatory bowel disease units. ...
Known for Restorative Proctocolectomy | Management Patients | Ulcerative Colonic Pouches | Pelvic Sepsis
KOL-Index: 10235 . A prospective randomized trial was performed to compare complications and function after hand sewn ileoanal anastomosis with mucosectomy (group A) with stapled ileoanal anastomosis without mucosectomy (group B) during restorative proctocolectomy. Thirty-two age- and sex-matched consecutive patients under the care of one surgeon were randomized. The median duration of anal dilatation while ...
Known for Ileoanal Anastomosis | Restorative Proctocolectomy | Anal Function | Prospective Randomized Trial
KOL-Index: 10182 . BACKGROUND: Percutaneous, transcutaneous and sham transcutaneous posterior tibial nerve stimulation was compared in a prospective blinded randomized placebo-controlled trial. METHODS: Patients who had failed conservative treatment for faecal incontinence were randomized to one of three groups: group 1, percutaneous; group 2, transcutaneous; group 3, sham transcutaneous. Patients in groups ...
Known for Faecal Incontinence | Tibial Nerve | Transcutaneous Posterior | Controlled Trial
KOL-Index: 10137 . BACKGROUND: Anterior structural damage to the anal sphincter occurs in up to a third of women at first vaginal delivery, and of these a third have new bowel symptoms. The standard treatment for such structural damage is anterior overlapping anal-sphincter repair. We aimed to assess the long-term results of this operation. METHODS: We assessed the long-term results in 55 consecutive ...
Known for Sphincter Repair | Anterior Anal | Patients Surgery | Vaginal Delivery

Key People For Restorative Proctocolectomy

Top KOLs in the world
#1
Victor Warren Fazio
restorative proctocolectomy ulcerative colitis crohns disease
#2
John Hogeland Pemberton†
ulcerative colitis ileal pouch anal anastomosis
#3
Ralph John Nicholls
restorative proctocolectomy faecal incontinence ulcerative colitis
#4
Roger R Dozois
ulcerative colitis anal anastomosis ileal pouch
#5
Ian C Lavery
rectal cancer ulcerative colitis restorative proctocolectomy
#6
James Michael Church
familial adenomatous polyposis colorectal cancer lynch syndrome

Colorectal Surgery, Imperial College, London, UK | Visiting Professor in Colorectal Surgery, Imperial College London, London, UK. | Emeritus Consultant Surgeon, St Mark’s Hospital, Harrow, UK | Department of Surgery and Cancer, Imperial College, Lond