Read by QxMD icon Read


shared collection
18 papers 0 to 25 followers
By Cristobal Adolfo Abello Munarriz Pediatric surgeon
Tomas Wester
No abstract text is available yet for this article.
February 2016: Acta Paediatrica
Lily S Cheng, Dana M Schwartz, Ryo Hotta, Hannah K Graham, Allan M Goldstein
PURPOSE: Recent evidence suggests that patients with Hirschsprung disease (HD) have abnormal neurotransmitter expression in the ganglionated proximal colon. These alterations may cause persistent bowel dysfunction even after pullthrough surgery. We sought to quantify the proportion of nitrergic neurons in the ganglionic colon of HD patients and relate these findings to functional outcome. METHODS: The proximal resection margin from 17 patients with colonic HD who underwent a pullthrough procedure and colorectal tissue from 4 age-matched controls were immunohistochemically examined to quantify the proportion of nitrergic neurons...
November 2016: Journal of Pediatric Surgery
Brian T Caldwell, Duncan T Wilcox
Cloacal anomalies are the most complex and severe form of congenital anorectal malformations (ARM) and urogenital malformations, and it has been well documented that increased severity of ARM leads to worse outcomes. While short-term data on persistent cloaca are available, a paucity of data on long-term outcomes exists, largely because of a lack of uniform terminology, inclusion with other ARM and evolution of the operative technique. On comprehensive review of the published literature on long-term urological outcomes in patients with cloacal anomalies, we found a significant risk of chronic kidney disease and incontinence, however, with improvements in surgical technique, outcomes have improved...
April 2016: Seminars in Pediatric Surgery
Christine Whyte, Timothy G Canty, Janeen Smith, Kieran Melody
BACKGROUND: The presence of a slightly anterior, stenotic anus is a low anorectal malformation. It is a type of rectoperineal fistula. The cardinal symptoms are constipation and straining at stool. Hendren described a technically simple anoplasty for this condition in 1978. Controversy about terminology has led to a lack of clarity about this condition. METHODS: Clinical data were reviewed about the authors' patients, who had Hendren anoplasty, from 2009 to 2015...
October 2016: Journal of Pediatric Surgery
Hongke Zhang, Yi Lv, Chang Liu, Liang Yu, Xuemin Liu, Dinghui Dong, Feng Ma, Haohua Wang
A new anastomat for digestive tract operations, based on the magnetic compressive technique and mechanical transmission mechanism, is composed of a removable head and a reusable body. The head includes two parts: the proximal end can be fixed to the body, and the distal end could be used for performing a purse string suture. The procedure of anastomosis is similar to that of the stapler, and the anastomoses is established using a pair of magnetic rings. The instrument makes magnamosis more simple and feasible, and it would facilitate the clinical application...
September 2015: Zhongguo Yi Liao Qi Xie za Zhi, Chinese Journal of Medical Instrumentation
Fei Xue, Hong-Chang Guo, Jian-Peng Li, Jian-Wen Lu, Hao-Hua Wang, Feng Ma, Ya-Xiong Liu, Yi Lv
AIM: To investigate the optimal magnetic pressure and provide a theoretical basis for choledochojejunostomy magnetic compressive anastomosis (magnamosis). METHODS: Four groups of neodymium-iron-boron magnets with different magnetic pressures of 0.1, 0.2, 0.3 and 0.4 MPa were used to complete the choledochojejunostomy magnamosis. Twenty-six young mongrel dogs were randomly divided into five groups: four groups with different magnetic pressures and 1 group with a hand-suture anastomosis...
February 21, 2016: World Journal of Gastroenterology: WJG
Ibrahim Uygun, Mehmet H Okur, Yilmaz Arayici, Aysenur Keles, Hayrettin Ozturk, Selcuk Otcu
BACKGROUND: Magnetic compression anastomoses (magnamosis) have been previously described for gastrointestinal, biliary, urinary, and vascular anastomoses. Objectives. Herein, the authors report the creation of a magnetic compression colostomy (magnacolostomy) using a simple technique in rats. MATERIAL AND METHODS: Animals were randomized into two groups (n = 8, each): a magnetic colostomy (MC) group and a control surgical tube colostomy (SC) group. In the MC group, the first magnetic ball (3 mm) was rectally introduced into the rat colon...
May 2012: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Xiaopeng Yan, Chao Fan, Jia Ma, Jianhui Li, Dinghui Dong, Haohua Wang, Feng Ma, Xinglong Zheng, Yi Lv
BACKGROUND AND AIMS: Installing the transjugular intrahepatic portosystemic shunt for portal hypertension is relatively safe, but complications are still high. To explore a new method of portacaval shunt, the magnetic compression technique was introduced into the shunting procedure. METHODS: A portal-inferior vena cava shunt was performed on 6 male mongrel dogs by two hemocompatible Nd-Fe-B permanent magnets, parent and daughter. The parent magnet was applied to the inferior vena cava guided by a catheter through the femoral vein...
2013: PloS One
Yik Hong Ho, Mohamed Ahmed Tawfik Ashour
Colorectal anastomotic leak remains one of the most feared post-operative complications, particularly after anterior resection of the rectum with, the shift from abdomino-peritoneal resections to total mesorectal excision and primary anastomosis. The literature fails to demonstrate superiority of stapled over hand-sewn techniques in colorectal anastomosis, regardless of the level of anastomosis, although a high stricture rate was noted in the former technique. Thus, improvements in safety aspects of anastomosis and alternatives to hand-sewn and stapled techniques are being sought...
April 7, 2010: World Journal of Gastroenterology: WJG
Michele Diana, James Wall, Silvana Perretta, Bernard Dallemagne, Kelly D Gonzales, Michael R Harrison, Vincent Agnus, Luc Soler, Stephan Nicolau, Jacques Marescaux
OBJECTIVE: This study aimed to assess the feasibility of a totally endoscopic enteral bypass using a self-orienting, dual ring, magnetic anastomosis system (MAGNAMOSIS) guided by a magnetic tracking system (3D METRIS). MATERIALS AND METHODS: In an anesthetized pig, 2 endoscopes were advanced, one each into the stomach and the colon. Both endoscopes were equipped with a MAGNAMOSIS ring secured with an endoscopic snare and a 3D METRIS within one working channel. The whole procedure was followed laparoscopically...
December 2011: Surgical Innovation
Ibrahim Uygun, Mehmet Hanifi Okur, Hasan Cimen, Aysenur Keles, Ozben Yalcin, Hayrettin Ozturk, Selcuk Otcu
OBJECTIVE: To report the first creation of magnetic compression cystostomy (magnacystostomy) using an easy and simple new technique in rats. Magnetic compression anastomoses (magnamosis) have been previously described for gastrointestinal, biliary, urinary, and vascular anastomoses. METHODS: Female rats were randomized into 2 groups (n = 10 each): a magnetic cystostomy group and a formal surgical cystostomy group as the control group. In the magnetic cystostomy group, a very small cylindrical magnet was inserted into the bladder...
March 2012: Urology
Joël Leroy, Silvana Perretta, Michele Diana, James Wall, Veronique Lindner, Michael Harrison, Jacques Marescaux
INTRODUCTION: While experimental natural orifice transluminal endoscopic surgery (NOTES) sigmoid colectomies have been reported, pure NOTES anastomoses are restricted by the limited reach of commercially available circular staplers. MAGNAMOSIS is a set of self-orienting magnetic rings that can be delivered endoluminally throughout the colon to generate a compression anastomosis. Aim. To assess the feasibility of a pure NOTES transrectal (TR) and transgastric (TG) approach to perform any segmental colectomy...
June 2012: Surgical Innovation
Katie W Russell, Michael D Rollins, G Peter Feola, Eric R Scaife
We report a case of rectal atresia treated using magnets to create a rectal anastomosis. This minimally invasive technique is straightforward and effective for the treatment of rectal atresia in children.
2014: BMJ Case Reports
J Wall, M Diana, J Leroy, V Deruijter, K D Gonzales, V Lindner, M Harrison, J Marescaux
BACKGROUND AND STUDY AIMS: MAGNAMOSIS forms a compression anastomosis using self-assembling magnetic rings that can be delivered via flexible endoscopy. The system has proven to be effective in full-thickness porcine small-bowel anastomoses. The aim of this study was to show the feasibility of the MAGNAMOSIS system in hybrid endoscopic colorectal surgery and to compare magnetic and conventional stapled anastomoses. METHODS: A total of 16 swine weighing 35 - 50 kg were used following animal ethical committee approval...
August 2013: Endoscopy
Kullada O Pichakron, Eric B Jelin, Shinjiro Hirose, Patrick F Curran, Ramin Jamshidi, Jacob T Stephenson, Richard Fechter, Michael Strange, Michael R Harrison
BACKGROUND: Previously we demonstrated the safety and patency of a magnetic compression anastomosis (magnamosis). We present the further development of this technique, with specific focus on optimizing device design for minimally invasive magnamosis. STUDY DESIGN: The magnamosis device was designed to incorporate 3 features: 2 convex-concave radially symmetric halves that magnetically self-align, a central channel for immediate patency, and specially engineered radial topography of the mating surfaces to promote gradual remodeling...
January 2011: Journal of the American College of Surgeons
Ramin Jamshidi, Jacob T Stephenson, Jared G Clay, Kullada O Pichakron, Michael R Harrison
PURPOSE: An ideal anastomosis between hollow viscera should be easily performed, strong, and operator independent. We hypothesized that transluminal attraction between magnets in the intestine could be harnessed to create an intestinal compression anastomosis (magnamosis) with these characteristics. We further hypothesized that variation of attraction force and geometry of compression would affect the quality of the intestinal anastomosis. METHODS: We designed a self-orienting device composed of 2 neodymium-iron-boron magnets affixed to polytetrafluoroethylene moldings...
January 2009: Journal of Pediatric Surgery
Hao Jiang, Shijie Chen, Shad Kish, Lokkee Loh, Junmin Zhang, Xiaorong Zhang, Dillon Kwiat, Michael Harrison, Shuvo Roy
Anastomosis is a common surgical procedure using staples or sutures in an open or laparoscopic surgery. A more effective and much less invasive alternative is to apply the mechanical pressure on the tissue over a few days [1]. Since the pressure is produced by the attractive force between two permanent magnets, the procedure is called magnamosis[1]. To ensure the two magnets are perfectly aligned during the surgery, a miniaturized batteryless Radio Frequency IDentification (RFID) tag is developed to wirelessly telemeter the status of a pressure sensitive mechanical switch...
2014: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Kelly D Gonzales, Geoffrey Douglas, Kullada O Pichakron, Dillon A Kwiat, Salvador Guevara Gallardo, Jose Luis Encinas, Shinjiro Hirose, Michael R Harrison
PURPOSE: Magnamosis creates a secure sutureless anastomosis through magnetic compression. In this study, we further develop and test delivery devices capable of creating a secure duodeno-colonic anastomosis using available minimally invasive endoscopic techniques. METHODS: Eight pigs underwent general anesthesia. Colonoscopy was used to deliver 1 magnetic ring to the hepatic flexure. Simultaneously, upper endoscopy delivered the other magnetic ring into the duodenum using a variety of techniques...
June 2012: Journal of Pediatric Surgery
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"