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"Component separation"

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https://www.readbyqxmd.com/read/29349616/outcomes-of-utilizing-absorbable-mesh-as-an-adjunct-to-posterior-sheath-closure-during-complex-posterior-component-separation
#1
J S Winder, A Majumder, M Fayezizadeh, Y W Novitsky, E M Pauli
BACKGROUND: A minority of patients undergoing posterior component separation (PCS) have abdominal wall defects that preclude complete reconstruction of the visceral sac with native tissue. The use of absorbable mesh bridges (AMB) to span such defects has not been established. We hypothesized that AMB use during posterior sheath closure of PCS is safe and provides favorable outcomes. METHODS: We performed a retrospective review of consecutive patients undergoing PCS with AMB at two hernia centers...
January 18, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29347400/disordered-hyperuniformity-in-two-component-nonadditive-hard-disk-plasmas
#2
Enrique Lomba, Jean-Jacques Weis, Salvatore Torquato
We study the behavior of a classical two-component ionic plasma made up of nonadditive hard disks with additional logarithmic Coulomb interactions between them. Due to the Coulomb repulsion, long-wavelength total density fluctuations are suppressed and the system is globally hyperuniform. Short-range volume effects lead to phase separation or to heterocoordination for positive or negative nonadditivities, respectively. These effects compete with the hidden long-range order imposed by hyperuniformity. As a result, the critical behavior of the mixture is modified, with long-wavelength concentration fluctuations partially damped when the system is charged...
December 2017: Physical Review. E
https://www.readbyqxmd.com/read/29344947/genome-wide-population-structure-and-admixture-analysis-reveals-weak-differentiation-among-ugandan-goat-breeds
#3
R B Onzima, M R Upadhyay, R Mukiibi, E Kanis, M A M Groenen, R P M A Crooijmans
Uganda has a large population of goats, predominantly from indigenous breeds reared in diverse production systems, whose existence is threatened by crossbreeding with exotic Boer goats. Knowledge about the genetic characteristics and relationships among these Ugandan goat breeds and the potential admixture with Boer goats is still limited. Using a medium-density single nucleotide polymorphism (SNP) panel, we assessed the genetic diversity, population structure and admixture in six goat breeds in Uganda: Boer, Karamojong, Kigezi, Mubende, Small East African and Sebei...
January 17, 2018: Animal Genetics
https://www.readbyqxmd.com/read/29344785/laparoscopic-intracorporeal-rectus-aponeuroplasty-lira-technique-a-step-forward-in-minimally-invasive-abdominal-wall-reconstruction-for-ventral-hernia-repair-lvhr
#4
Julio Gómez-Menchero, Juan Francisco Guadalajara Jurado, Juan Manuel Suárez Grau, Juan Antonio Bellido Luque, Joaquin Luis García Moreno, Isaías Alarcón Del Agua, Salvador Morales-Conde
BACKGROUND: Closing the defect (CD) during laparoscopic ventral hernia repair began to be performed in order to decrease seroma, to improve the functionality of the abdominal wall, and to decrease the bulging effect. However, tension at the incision after CD in large defects is related to an increased rate of pain and recurrence. We present the preliminary results of a new technique for medium midline hernias as an alternative to conventional CD. METHODS: A prospective controlled study was conducted from January 2015 to January 2017 to evaluate an elective new procedure (LIRA) performed on patients with midline ventral hernias (4-10 cm width)...
January 17, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29309330/outcomes-of-ventral-hernia-repair-with-concomitant-panniculectomy
#5
Colton H L McNichols, Silviu Diaconu, Yuanyuan Liang, Eseigboria Ikheloa, Shivum Kumar, Saahil Kumar, Arthur Nam, Yvonne Rasko
PURPOSE: Combined ventral hernia repair and panniculectomy (VHR/PAN) is controversial, and the safety profile including anticipated complications has been questioned. We present a retrospective case series review of patients from the University of Maryland Medical Center to help surgeons counsel patients on the risks and benefits of this procedure. METHODS: A retrospective database was collected using current procedural terminology codes for VHR/PAN. The patient-specific variables that were studied include the following: sex, body mass index (BMI), smoking, diabetes, chronic obstructive pulmonary disease, cirrhosis, immunosuppression, length of operation, acute incarcerated hernias, hernia size and location, mesh size and location, pannus weight, concomitant component separation, use of negative-pressure wound therapy, intestinal violation, follow-up duration, ventral hernia working group, history of bariatric surgery, previous hernia repair, skin dehiscence, skin necrosis, chronic wound, surgical site infection, seroma, hematoma, fascial dehiscence, hernia recurrence, unplanned return to operating room, and medical complication...
January 5, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29309326/components-separation-for-abdominal-wall-reconstruction-in-the-recalcitrant-high-comorbidity-patient-a-review-of-311-single-surgeon-cases
#6
Sanjay Naran, Sameer Shakir, Kenneth C Shestak, James M Russavage, Vu T Nguyen
PURPOSE: Components separation of the abdominal musculature remains a mainstay for closure of complicated midline and paramedian abdominal wall defects. The authors critically analyzed their experience with this technique to identify prognosticators affecting long-term clinical outcomes. METHODS: A retrospective review was performed of patients undergoing components separation by a single senior surgeon (J.M.R.) between 2000 and 2010. Numerous perioperative patient characteristics were collected and analyzed to determine their effects on long-term clinical outcomes...
January 5, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29279087/response-of-drug-susceptible-and-resistant-haemonchus-contortus-larvae-to-monepantel-and-abamectin-alone-or-in-combination-in-vitro
#7
Andrew C Kotze, Angela Ruffell, Jane Lamb, Tim P Elliott
There is an increasing interest in the use of combination anthelmintic products for the control of intestinal nematode parasites of livestock. These products are seen as attractive options for parasite control in the face of increasing levels of resistance to the different anthelmintic drug classes, as well as a means to slow the rate at which resistance develops to the individual components of the combination. With the recent introduction of an anthelmintic combination product containing abamectin and monepantel (at 1:12...
January 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29258479/surgical-treatment-strategies-for-giant-inguinoscrotal-hernia-a-case-report-with-review-of-the-literature
#8
Julia Isabelle Staubitz, Peter Gassmann, Daniel Wilhelm Kauff, Hauke Lang
BACKGROUND: An inguinoscrotal hernia is defined as "giant" if descending below the midpoint of the inner thigh of a patient in upright position. In developed countries this is a rare entity. In the literature different surgical techniques have been reported so far to achieve a successful treatment. CASE PRESENTATION: We present the case of a 63 year-old man suffering from a giant inguinoscrotal hernia, whom we treated using a combined open transabdominal and inguinal approach following an unsuccessful laparoscopic attempt...
December 19, 2017: BMC Surgery
https://www.readbyqxmd.com/read/29244761/study-of-separation-and-fouling-of-reverse-osmosis-membranes-during-model-hydrolysate-solution-filtration
#9
Olumoye Ajao, Mohamed Rahni, Mariya Marinova, Hassan Chadjaa, Oumarou Savadogo
Prehydrolysate, a dilute solution consisting mainly of pentoses, hexoses, and lesser quantities of organic acids, furfural and phenolics, is generated in the Kraft dissolving pulp process. An obstacle facing the valorization of the solution in hemicellulose biorefineries, by conversion of the sugars into bioproducts such as furfural, is the low sugar concentration. Membrane filtration is typically proposed in several hemicellulose based biorefineries for concentrating the solution, although they are usually generated using different wood species, pretreatment methods, and operating conditions...
December 15, 2017: Membranes
https://www.readbyqxmd.com/read/29226882/concomitant-intraperitoneal-onlay-mesh-repair-with-endoscopic-component-separation-and-sleeve-gastrectomy
#10
P Praveen Raj, Siddhartha Bhattacharya, S Saravana Kumar, R Parthasarathi, C Palanivelu
Bariatric surgery can be safely combined with laparoscopic intraperitoneal onlay mesh (IPOM) repair. In case of large ventral hernias, laparoendoscopic component separation can also be combined to achieve tension-free closure of the defect. Concomitant bariatric surgery and hernia repair also offer the additional benefit of reduction in recurrence of hernias as obesity, one of the risk factors, is treated in the process. We present a case of 60-year-old man with a body mass index of 45.3 kg/m2 with a large recurrent ventral hernia...
December 11, 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/29183531/patterns-of-recurrence-and-mechanisms-of-failure-after-open-ventral-hernia-repair-with-mesh
#11
COMPARATIVE STUDY
Jeremy A Warren, Sean P McGrath, Allyson L Hale, Joseph A Ewing, Alfredo M Carbonell, William S Cobb
Recurrence after ventral hernia repair (VHR) remains a significant complication. We sought to identify the technical aspects of VHR associated with recurrence. Patients who underwent open midline VHR between 2006 and 2013 (n = 261) were retrospectively evaluated. Patients with recurrence (Group 1, n = 48) were compared with those without recurrence (Group 2, n = 213). Smoking, diabetes, and body mass index were not different between groups. More patients in Group 1 underwent clean-contaminated, contaminated, or dirty procedures (43...
November 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/29173955/speedy-standing-wave-design-and-simulated-moving-bed-splitting-strategies-for-the-separation-of-ternary-mixtures-with-linear-isotherms
#12
David Harvey, George Weeden, Nien-Hwa Linda Wang
Simulated Moving Bed (SMB) has advantages over batch chromatography in terms of productivity and solvent efficiency. However, SMB applications in large scale production are still limited because of the many design parameters that must be specified and the multiple splitting strategies that can be implemented. To overcome these barriers, this study extends the Speedy Standing Wave Design (SSWD) method of Weeden and Wang for binary linear systems to ternary linear adsorption systems. The dimensionless operating parameters, sorbent productivity, and solvent efficiency can be quickly calculated without process simulations...
October 24, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29164131/continuous-laparoscopic-closure-of-the-linea-alba-with-barbed-sutures-combined-with-laparoscopic-mesh-implantation-ipom-plus-repair-as-a-new-technique-for-treatment-of-abdominal-hernias
#13
Reiko Wiessner, Thomas Vorwerk, Claudia Tolla-Jensen, Alexander Gehring
Despite extensive experience and significant reduction of complications in recent years, laparoscopic treatment of complex abdominal hernias is a challenge even for the experienced endoscopic surgeon. Patients with severe incisional hernias or symptomatic rectus diastasis benefit from the closure of the linea alba as a morphological and physiological reconstruction of the abdominal wall followed by mesh implantation. Occasionally, an additional component separation is necessary. In open surgery, this is associated with very large wound areas, postoperative seromas, poor wound healing and, in the worst case, mesh infections...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/29163316/modeling-psychological-contract-violation-using-dual-regime-models-an-event-based-approach
#14
Joeri Hofmans
A good understanding of the dynamics of psychological contract violation requires theories, research methods and statistical models that explicitly recognize that violation feelings follow from an event that violates one's acceptance limits, after which interpretative processes are set into motion, determining the intensity of these violation feelings. Whereas theories-in the form of the dynamic model of the psychological contract-and research methods-in the form of daily diary research and experience sampling research-are available by now, the statistical tools to model such a two-stage process are still lacking...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29068903/redefining-the-rectus-sheath-implications-for-abdominal-wall-repair
#15
Imran R A Punekar, Joseph S Khouri, Michael Catanzaro, Aizaz L Shaikh, Howard N Langstein
BACKGROUND: The abdominal wall is frequently manipulated in a variety of reconstructive procedures, and its anatomy is well described. Our clinical observations, however, contradict the standard depiction of the components of the abdominal wall at various levels - particularly regarding the course of the transversus abdominis muscle (TA). Therefore, we sought to characterize the components of the rectus sheath at various anatomic levels corresponding to surgical landmarks in order to define key points relevant to abdominal wall repair...
October 13, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29063714/factorization-of-force-and-timing-in-sensorimotor-performance-long-range-correlation-properties-of-two-different-task-goals
#16
Ramesh Balasubramaniam, Michael J Hove, Butovens Médé
Long-range correlations are often manifested in the form of 1/f(β) noise in a series of repeated measurements of the same neural or behavioral variable. Recent work has demonstrated that the magnitude and nature of these long-range correlations reliably capture individual differences and variation in task performance. In sensorimotor timing experiments, task characteristics such as tapping or circle drawing affect these long-range correlations during the production of isochronous time intervals. Such correlations are highly reproducible across multiple trials for the same task but do not correlate between tasks...
October 24, 2017: Topics in Cognitive Science
https://www.readbyqxmd.com/read/29062460/heterotopic-ossification-encountered-during-a-complex-ventral-hernia-repair-case-report-and-literature-review
#17
Takintope Akinbiyi, Sanjeev Kaul
Introduction: Heterotopic ossification involves the formation of trabecular bone outside of its usual anatomic location. While it is a well-known entity in orthopedic and spinal injury literature, it has also been observed after midline laparotomy and severe burns. Methods/Case Report: We present a case of a 69-year-old man who presented for ventral hernia repair after a prolonged postoperative course following colectomy involving an open abdomen with eventual closure with skin grafting. Results: Two large calcified objects were encountered during the excision of the skin graft from the small intestine and during the component separation...
2017: Eplasty
https://www.readbyqxmd.com/read/29055880/component-separation-of-abdominal-wall-with-intraoperative-botulinum-a-presents-satisfactory-outcomes-in-large-incisional-hernias-a-case-report
#18
Lucas Torres Oliveira, Felipe Futema Essu, Gustavo Heluani Antunes de Mesquita, Yuri Justi Jardim, Leandro Ryuchi Iuamoto, Fábio Yuji Suguita, Diego Ramos Martines, Fernanda Nii, Daniel Reis Waisberg, Alberto Meyer, Wellington Andraus, Luiz Augusto Carneiro D'Albuquerque
PURPOSE: Transplantation patients have a series of associated risk factors that make appearance of incisional hernia (IH) more likely. A number of aspects of the closure of large defects remain controversial. In this manuscript, we present the repair of a large IH following liver transplantation through the technique of posterior components separation combined with the anterior, together with the intraoperative use of botulinum toxin A and the placement of mesh. As a secondary objective, we analyze the incidence of IH following liver transplantation in our service...
October 12, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29053405/evolution-of-endoscopic-anterior-component-separation-to-a-precostal-access-with-a-new-cylindrical-balloon-trocar
#19
Gernot Köhler, Ines Fischer, Richard Kaltenböck, Michael Lechner, Bernhard Dauser, Lars Nannestad Jorgensen
INTRODUCTION: Endoscopic anterior component separation (ECS) techniques facilitate tension-free midline closure of wide ventral hernia defects. We describe a novel approach with a precostal incision and a new cylindrical ballon trocar. MATERIALS AND METHODS: A single-center analysis of 19 patients undergoing ECS between January 1, 2014 and August 2, 2017 was performed with regard to improvement of technique. We currently start with a lateral precostal incision. This access in a low-fat and stable area allows for easy identification of the external oblique muscle with the ribs functioning as dorsal abutment for entering the correct plane between external and internal oblique muscles...
October 20, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/29030835/a-new-technique-for-tension-free-reconstruction-in-large-incisional-hernia
#20
Gabriele Munegato, Landino Fei, Michele Schiano di Visconte, Danilo Da Ros, Luana Moras, Gabriele Bellio
In the surgical management of large incisional hernias, the main target is the closure of the abdominal wall defect on the midline without a dangerous increase in the intraabdominal pressure. In this setting, new intraperitoneal prosthesis and components separation techniques were proposed to solve this problem. Both solutions present some critical issues. A new surgical approach with a free lateral double layer prosthesis totally in polypropylene both sides (FLaPp®) is proposed to overcome this problem. This is a retrospective cohort analysis study with a prospectively collected database from two different Italian hospitals...
December 2017: Updates in Surgery
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