John Hagen | |
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Born | Aklavik, Northwest Territories, Canada | April 7, 1956
Occupation | Surgeon |
Academic background | |
Alma mater | University of Alberta |
Academic work | |
Discipline | Surgery |
Sub-discipline | Laparoscopy,bariatrics |
Institutions | University of Toronto Humber River Regional Hospital |
Main interests | Laparoscopic surgery and bariatrics |
John Hagen (born April 7,1956) is a Canadian surgeon who specializes in laparoscopic surgery [1] and bariatrics. [2] He served as the Chief of Surgery at Humber River Regional Hospital (HRH) from 2013 to 2020,then Chief of Staff from 2020 to 2022. Hagen was also an assistant professor and lecturer at the University of Toronto. [3]
John Hagen was born on April 7,1956,in Aklavik,Northwest Territories,Canada. Both of his parents were physicians. [4] He completed his medical degree at the University of Alberta,Faculty of Medicine,in 1979,earning a Doctor of Medicine (Honours). [5]
After graduating,Hagen pursued a mixed internship in Christchurch,New Zealand,in 1980,gaining valuable international experience in his early medical career. He then proceeded to undertake his general surgery residency at the Department of Surgery,University of Toronto,in 1984,where he specialized in laparoscopic surgery. [6]
Hagen became a Fellow of the Royal College of Physicians and Surgeons of Canada (FRCS(C)) in 1984. [6]
In 1985,he completed an endoscopy program at the Aichi Cancer Center Hospital in Nagoya,Japan. Subsequently,he enrolled in an endoscopy program at Middlesex Hospital in London the same year. [6]
John Hagen has worked for over 37 years as a staff surgeon at Humber River Regional Hospital (HRH),specializing in laparoscopic surgery and advancing minimally invasive surgical techniques. He has served as the Surgical Director of Bariatrics at HRH since 2007,where he performed obesity treatment using surgical methods. [2]
Hagen is an assistant professor and lecturer in the Department of Surgery at the University of Toronto,actively involved in training residents and fellows in laparoscopic and bariatric surgery. [3]
In 2014,he was honored with the Mentor of the Year Award - Region 3 (Ontario and Nunavut) by the Royal College of Physicians and Surgeons of Canada. [5] [7] [8]
Throughout his career,Hagen has held various hospital positions and privileges,including surgeon roles at Northwestern General Hospital and Humber River Hospital (HRH). [9] He was also the Chief of Surgery,Division Head of General Surgery,and Chief of Staff at HRH. [10]
Hagen has organized and led seven trips to China,where he and a team of North American doctors provided interactive lecture sessions at hospitals across the country. During these sessions,he primarily focused on teaching laparoscopic colon resections and cholecystectomies. As part of the exchange program,two minimally invasive fellows from Toronto are sent to China,while two Chinese surgeons visit Humber River Hospital for a period of 6-8 weeks. [11]
Hagen has participated in medical missions to Guatemala with HELPS International. These missions aim to provide primary care to patients in impoverished and remote areas of the country. The majority of the cases during these missions involve hernias,as diagnostic capabilities are limited in these remote regions. [11]
General surgery is a surgical specialty that focuses on alimentary canal and abdominal contents including the esophagus,stomach,small intestine,large intestine,liver,pancreas,gallbladder,appendix and bile ducts,and often the thyroid gland. General surgeons also deal with diseases involving the skin,breast,soft tissue,trauma,peripheral artery disease and hernias and perform endoscopic as such as gastroscopy,colonoscopy and laparoscopic procedures.
Laparoscopy is an operation performed in the abdomen or pelvis using small incisions with the aid of a camera. The laparoscope aids diagnosis or therapeutic interventions with a few small cuts in the abdomen.
Remote surgery is the ability for a doctor to perform surgery on a patient even though they are not physically in the same location. It is a form of telepresence. A robot surgical system generally consists of one or more arms,a master controller (console),and a sensory system giving feedback to the user. Remote surgery combines elements of robotics,telecommunications such as high-speed data connections and elements of management information systems. While the field of robotic surgery is fairly well established,most of these robots are controlled by surgeons at the location of the surgery. Remote surgery is remote work for surgeons,where the physical distance between the surgeon and the patient is less relevant. It promises to allow the expertise of specialized surgeons to be available to patients worldwide,without the need for patients to travel beyond their local hospital.
Gastric bypass surgery refers to a technique in which the stomach is divided into a small upper pouch and a much larger lower "remnant" pouch,where the small intestine is rearranged to connect to both. Surgeons have developed several different ways to reconnect the intestine,thus leading to several different gastric bypass procedures (GBP). Any GBP leads to a marked reduction in the functional volume of the stomach,accompanied by an altered physiological and physical response to food.
A laparoscopic adjustable gastric band,commonly called a lap-band,A band,or LAGB,is an inflatable silicone device placed around the top portion of the stomach to treat obesity,intended to decrease food consumption.
St. Michael's Hospital is a teaching hospital and medical centre in Toronto,Ontario,Canada. It was established by the Sisters of St. Joseph in 1892 with the founding goal of taking care of the sick and the poor of Toronto's inner city. The hospital provides tertiary and quaternary services in cardiovascular surgery,neurosurgery,inner city health,and therapeutic endoscopy. It is one of two Level 1 adult trauma centres in Greater Toronto,along with the larger Sunnybrook Health Sciences Centre. As trauma centres,both St. Michael's and Sunnybrook are equipped with helipads. It is one of several teaching hospitals of the University of Toronto Faculty of Medicine and is part of the Unity Health Toronto hospital network.
Humber River Hospital is a major acute care hospital in Toronto,Ontario,Canada,located in the northwest part of Toronto,near Highway 401 and Keele Street. It is a large community hospital offering emergency and intensive care services,maternal and child services along with other services such as cardiology,orthopaedic surgery and cancer care. In the 2019-2020 fiscal year there were nearly 30,000 inpatient stays with an average length of stay of 7.0 days,and 135,000 emergency department visits.
Marc Bessler is an American surgeon known for his innovations in bariatrics. He is currently the United States Surgical Professor of Surgery at Columbia University Medical Center. Starting in July 2024,he will be the Chair of the Department of Surgery at Northwell Health Lenox Hill Hospital. He also serves as a content contributor for Bariatric Surgery Source. Bessler specializes in surgical management of morbid obesity and laparoscopic surgery of the stomach,among other specialties.
T. Narayana Rao M.B.B.S.,MS FICS,FACS,FRCS Glasgow is Professor of Surgery,Andhra Medical College,and chief surgeon at King George Hospital,bariatric surgeon of Visakhapatnam. Started Visakha Obesity Surgery Center and Member of Governing Council and Hon Jn secretary of ASSOCIATION of Surgeons of India.
The Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) is a 501c6 non-profit professional organization providing education on gastrointestinal minimally invasive surgery. It describes itself thus:The mission of the Society of American Gastrointestinal and Endoscopic Surgeons is to innovate,educate and collaborate to improve patient care.
Craig Anthony McKinley was a Canadian physician. On February 28,2003,McKinley participated in the world's first telerobotic-assisted surgery,conducted at two hospitals separated by 400 kilometres. He later served as an aquanaut on the joint NASA-NOAA NEEMO 7 underwater exploration mission in October 2004,where he and other aquanauts tested remote health care procedures with potential application for space travel. McKinley experienced problems with alcohol and faced legal difficulties beginning in 2009. He lost his hospital privileges in 2011 and died in 2013.
Pradeep Kumar Chowbey is an Indian surgeon,known for laparoscopic and bariatric surgeries. He is the incumbent Executive vice chairman of the Max Healthcare,Chairman of the Minimal Access,Metabolic &Bariatric Surgery and Allied Surgical Specialities of the Max Healthcare Institute,New Delhi. He is the founder of the Minimal Access,Metabolic &Bariatric Surgery Centre at the Sir Ganga Ram Hospital,New Delhi and has served as the Honorary Surgeon to the President of India,Dalai Lama and the Indian Armed Forces (AFMS). The Government of India awarded him the fourth highest civilian honour of the Padma Shri in 2002.
Mohit Bhandari is an Indian bariatric surgeon known for his work in laparoscopic and robot-assisted surgery. He is the first surgeon in Asian sub-continent to perform more than twenty one thousand bariatrics and metabolic surgeries. He is the President of IRCAD (India),India's first centre of excellence solely devoted to training and research &development in the realm of minimally invasive surgery.
Dr Malvika Sabharwal is an Indian gynecologist,laparoscopic surgeon and obstetrician at the Nova Specialty Hospitals of the Apollo Healthcare Group and at Jeewan Mala Hospital,New Delhi. The team led by her has been credited with the successful performance of the removal of the largest recorded fibroid through laparoscopic surgery. She leads the Gynae Endoscopy,a team of 140 doctors,involved in endoscopic surgical practices related to gynecology.
Younan Nowzaradan,also known as Dr. Now,is an Iranian-born American doctor,TV personality,and author. He specializes in vascular surgery and bariatric surgery. He is known for helping morbidly obese people lose weight on My 600-lb Life (2012–present).
Nancy Baxter is a Canadian surgeon who is a professor and the Head of Melbourne University's School of Population and Global Health,while continuing to maintain her appointment as Professor of Surgery in the Department of Surgery and the Institute of Health Policy,Management and Evaluation at the University of Toronto. She is a scientist with the Li Ka Shing Knowledge Institute and is a senior scientist in the Cancer Theme Group with the Institute for Clinical Evaluative Sciences (ICES). Baxter has board certifications through the American Board of Surgery (2000) and the American Board of Colon and Rectal Surgery (2002). She is a Fellow of the American College of Surgeons,the Royal College of Physicians and Surgeons of Canada,and the American Society of Clinical Oncology.
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Conor P. Delaney MD,MCh,PhD,FRCSI,FACS,FASCRS,FRCSI (Hon.) is an Irish-American colorectal surgeon,CEO and President of the Cleveland Clinic Florida,the Robert and Suzanne Tomsich Distinguished Chair in Healthcare Innovation,and Professor of Surgery at the Cleveland Clinic Lerner College of Medicine. He is also the current President of the American Society of Colon and Rectal Surgeons (ASCRS). He was previously Chairman of the Digestive Disease &Surgery Institute at the Cleveland Clinic. He is both a Fellow and Honorary Fellow of the Royal College of Surgeons in Ireland and a Fellow of both the American College of Surgeons and American Society of Colon and Rectal Surgeons.
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