Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Henri Atlas is active.

Publication


Featured researches published by Henri Atlas.


Surgery for Obesity and Related Diseases | 2017

Evolution of endoscopic treatment of sleeve gastrectomy leaks: from partially covered to long, fully covered stents

Fabio Garofalo; Maxime Noreau-Nguyen; Ronald Denis; Henri Atlas; Pierre Garneau; Radu Pescarus

BACKGROUND Laparoscopic sleeve gastrectomy (SG) has become a widely accepted option in the treatment of morbid obesity. Gastric leaks after SG occur in .9%-2.2% of the patients, mostly at the gastroesophageal junction. The current treatment algorithm includes drainage, antibiotics, nutritional support, and endoluminal control. OBJECTIVES Our hypothesis is that long, fully covered stents represent a safe, effective solution for SG leaks. SETTING University hospital. METHODS A retrospective analysis of our prospectively collected bariatric database was performed between June 2014 and May 2016. We included all patients treated for leaks after SG. Endoscopic treatment included partially covered metallic stent (Wallstent, Boston Scientific, Galway, Ireland), fully covered stent (Mega stent, Taewoong Medical Industries, Gyeonggi-do, South Korea), over-the-scope clip (Ovesco Endoscopy, Tubingen, Germany), and internal pigtail drainage. RESULTS A total of 872 SGs were performed. Overall, 10 of 872 patients (1.1%) developed a gastric leak. One patient was an outside referral. The 11 patients underwent endoscopic treatment accompanied by either percutaneous or laparoscopic abscess drainage. Endoscopic fistula closure at the gastroesophageal junction was achieved in 10 of 11 cases and the average time for closure was 9.9 (range: 4-24) weeks. One patient developed a second leak in the antrum, treated by subtotal gastrectomy. Overall, treatment with Wallstent failed in 3 of 5 patients, and these patients were eventually successfully treated with a Mega stent. The initial use of long, fully covered stents was successful in 5 of 6 cases. CONCLUSION Long, fully covered stents appear to be a good alternative to traditional stents either as primary treatment or after failure of other endoscopic treatments.


Surgery for Obesity and Related Diseases | 2017

Long-term outcome after laparoscopic sleeve gastrectomy in patients over 65 years old: a retrospective analysis

Fabio Garofalo; Ronald Denis; Radu Pescarus; Henri Atlas; Simon L. Bacon; Pierre Garneau

BACKGROUND Bariatric surgery has been proven to be a safe and effective treatment for obesity with BMI (body mass index) reduction, and resolution or lowering of obesity-related co-morbidities. The relative age limit for bariatric surgery has gradually been increased to 60 years of age and above. OBJECTIVES The aim of this study was to assess the safety and efficacy of laparoscopic sleeve gastrectomy (LSG) performed in older patients (≥65 years old). SETTING University hospital. METHODS Between May 1, 2007 and November 30, 2013, 30 consecutive patients≥65 years old were included in this retrospective study of our prospectively collected bariatric database. RESULTS A total of 27 (90%) primary LSG and 3 revisional LSG (10%) were performed. Mean patient age was 67.2 (range: 65-74) years, and mean preoperative BMI (±standard deviation [SD]) was 44.1±5.6 kg/m2. Thirty-day morbidity included 3 cases of self-limiting nausea and vomiting and 1 case of gastric sleeve stenosis necessitating conversion to gastric bypass. No mortality reported. The overall mean percentage of excess weight loss (±SD) and percentage of total weight loss (±SD) at 12 months were 53.8±19.8 and 23.9±8.4; 52.9±21.8 and 24±9.9 at 36 months, respectively. No patients were lost to follow-up but 5 were excluded because they underwent revisions. Age-adjusted mixed model analyses revealed that baseline BMI (P = .018), BMI>45 kg/m2 (P = .001), and having diabetes (P = .030) were associated with excess weight loss<50% across follow-up. CONCLUSION LSG seems to be effective and safe for patients≥65 years old. Obesity related co-morbidities have improved across follow-up. BMI>45 kg/m2 and diabetes is associated with insufficient weight loss or weight regain.


Canadian Association of Radiologists Journal-journal De L Association Canadienne Des Radiologistes | 2018

Laparoscopic Sleeve Gastrectomy: A Radiological Guide to Common Postsurgical Failure

Fabio Garofalo; Radu Pescarus; Ronald Denis; Henri Atlas; Pierre Garneau; Michel Philie; Karl Sayegh

Laparoscopic sleeve gastrectomy is one of the most common bariatric procedures worldwide. It has recently gained in popularity because of a low complication rate, satisfactory resolution of comorbidities, and excellent weight loss outcome. This article reviews the surgical technique, expected postsurgical imaging appearance, and imaging findings of common complications after laparoscopic sleeve gastrectomy. Understanding of the surgical technique of laparoscopic sleeve gastrectomy and of the normal postsurgical anatomy allows accurate interpretation of imaging findings in cases of insufficient weight loss, weight regain, and postsurgical complications.


Journal of Trauma-injury Infection and Critical Care | 1983

CHANGING TRENDS WITH ABDOMINAL INJURY IN SEATBELT WEARERS

Ronald Denis; Michael Allard; Henri Atlas; Edouard Farkouh


Obesity Surgery | 2013

Laparoscopic sleeve gastrectomy (LSG)-a good bariatric option for failed laparoscopic adjustable gastric banding (LAGB): a review of 90 patients.

Thierry Yazbek; Nagi Safa; Ronald Denis; Henri Atlas; Pierre Garneau


Obesity Surgery | 2016

Fully Ambulatory Laparoscopic Sleeve Gastrectomy: 328 Consecutive Patients in a Single Tertiary Bariatric Center

Fabio Garofalo; Ronald Denis; Omar Abouzahr; Pierre Garneau; Radu Pescarus; Henri Atlas


Obesity Surgery | 2013

Is There a Future for Laparoscopic Gastric Greater Curvature Plication (LGGCP)? A Review of 44 Patients

Henri Atlas; Thierry Yazbek; Pierre Garneau; Nagi Safa; Ronald Denis


Surgical Endoscopy and Other Interventional Techniques | 2018

Endoscopic management of post-laparoscopic sleeve gastrectomy stenosis

Valérie Deslauriers; Amélie Beauchamp; Fabio Garofalo; Henri Atlas; Ronald Denis; Pierre Garneau; Radu Pescarus


Surgery for Obesity and Related Diseases | 2016

Laparoscopic treatment of gastrocolic fistula: a rare complication post-sleeve gastrectomy.

Fabio Garofalo; Henri Atlas; Radu Pescarus


Surgical Endoscopy and Other Interventional Techniques | 2018

Laparoscopic revision of Billroth II with Braun anastomosis into Roux-en-Y anatomy in a patient with intestinal malrotation

Fabio Garofalo; Omar Abouzahr; Henri Atlas; Ronald Denis; Pierre Garneau; Hai Huynh; Radu Pescarus

Collaboration


Dive into the Henri Atlas's collaboration.

Top Co-Authors

Avatar

Ronald Denis

Université de Montréal

View shared research outputs
Top Co-Authors

Avatar

Fabio Garofalo

Université de Montréal

View shared research outputs
Top Co-Authors

Avatar

Pierre Garneau

Université de Montréal

View shared research outputs
Top Co-Authors

Avatar

Radu Pescarus

Université de Montréal

View shared research outputs
Top Co-Authors

Avatar

Omar Abouzahr

Université de Montréal

View shared research outputs
Top Co-Authors

Avatar

Nagi Safa

Université de Montréal

View shared research outputs
Top Co-Authors

Avatar

Simon L. Bacon

Université de Montréal

View shared research outputs
Top Co-Authors

Avatar

Thierry Yazbek

Université de Montréal

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge