buttonhole

The cannulation technique is important for the survival of the arteriovenous access. Choosing the appropriate technique is a complex decision. Such choice must be customized to patients, considering their characteristics, the type of arteriovenous access and the experience of the hemodialysis team. We describe seven items that can help nurses to identify the appropriate cannulation technique: type of arteriovenous access; drainage vein; hygienic self-care profile; experience of the nursing staff in the cannulation technique and nurse-to-patient ratio; hemodialysis treatment method; patient's condition; and patient's decision...

Background  Distal radioulnar joint (DRUJ) dislocation can occur as an isolated injury or in association with fracture radius (Galeazzi fracture-dislocation), Essex-Lopresti lesion or, rarely, with fracture of both radius and ulna (termed "Galeazzi type fracture"). DRUJ dislocations can be simple or complex. While simple DRUJ dislocation can be reduced by closed methods once the associated fractures are fixed anatomically, complex dislocation does not reduce by closed means. A complex DRUJ dislocation occurring in a both bone forearm fracture is an extremely unusual pattern of injury...

BACKGROUND: Nurses have a great responsibility in the daily care of arteriovenous fistulae, which entails the potential to affect patency. However, good cannulation technique involves more than placing a needle in the vessel and relies on different skills to facilitate needling. OBJECTIVES: To describe the preconditions for cannulation in arteriovenous fistulas. DESIGN: Descriptive statistics and qualitative content analysis were used in a mixed-methods design...

In this article, a novel approach to generating kinematic state trajectories for single-integrator multiagent systems is developed with the aim of addressing cooperative surveillance tasks of rectangular areas. In particular, the key idea consists in driving the involved agents within a so-called containment region while simultaneously reaming outside a forbidden area around the prescribed target. As one of its main features, the proposed kinematics allows the whole multiagent configuration to rotate safely along the perimeter under both full and partial connectivity properties of the underlying topology graph...

Purpose: To analyze intraoperative difficulties and visual and surgical outcomes following pediatric cataract surgery. Methods: This five-year retrospective study (2014-2019) included 138 eyes (85 children) with cataract aged between 12 months and 18 years (either sex). All children had undergone best-corrected visual acuity (BCVA), anterior and posterior segment evaluation, intraocular lens (IOL) power calculation, superior manual-small-incision cataract surgery (MSICS) with or without posterior capsulotomy/anterior vitrectomy and IOL implantation under general or local anesthesia, visual rehabilitation, and had been followed up for a minimum period of 12 months...

INTRODUCTION: Isolated rectal buttonhole tears are a rare obstetric complication and so there is a lack of consensus for their management. This case series reviews the published literature on obstetric rectal buttonhole injuries and provides further cases from our institution. METHODS: A literature review was carried out. All results were reviewed. Rectal buttonhole tears following vaginal delivery between 2012 and May 2022 in our institution were identified. Repair technique and post-operative management were recorded...

This article reviews the history and technique of primary posterior capsulorhexis with emphasis on anterior hyaloid membrane preservation and combined posterior optic capture of intraocular lenses into Berger's space for the purpose of lens stability and secondary cataract elimination among other potential advantages. Applications, variations, efficacy, and safety of the procedure are reviewed.

Elbow dislocations are very common, particularly in the posterolateral variety. Closed reduction is usually easy. However, an irreducible elbow dislocation without associated fracture is rare. We report the case of a 21-year-old patient who presented with an isolated posterolateral irreducible elbow dislocation. Open reduction revealed the buttonhole radial head in the capsule and the complex ligaments. A significant protrusion of the radial head associated with a closed reduction failure is highly suspicious of an irreducible dislocation...

We describe a case of total knee arthroplasty performed with one type of cruciate retaining knee prosthesis (Vanguard CR, Zimmer Biomet), wherein failure of locking mechanism occurred between the tibial baseplate and the polyethylene insert 10 months after initial surgery. While there are very few case reports in literature describing such locking mechanism failure, all of these have been in constrained and posterior stabilized knees. This case, to the best of our knowledge is the first such case seen with a cruciate retaining knee design...

Neurofibromas are common nerve sheath tumors, occurring either sporadically or associated with Von Recklinghausen's disease. Only 6.5% of solitary lesions are seen to involve the oral cavity without any features of neurofibromatosis type 1 (NF-1). It presents as a soft, skin-colored nodule with a characteristic buttonhole invagination. Histologically, it is an unencapsulated lesion consisting of proliferated neural elements, with a background of mucin and mast cells. Surgical excision is the treatment of choice...

BACKGROUND: Safe and effective arteriovenous fistula (AVF) puncture techniques must be used to reduce harm to hemodialysis patients. The relative benefits of buttonhole (BH) cannulation over those of rope ladder (RL) cannulation for AVF remain unclear and inconsistent. METHODS: This systematic review and meta-analysis was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Literature searches were conducted in June 2020 in multiple scientific databases including Cochrane library, CINAHL, PubMed/ Medline, Airiti Library, National Digital Library of Theses and Dissertations in Taiwan, Google scholar, Embase, and ProQuest...

AIMS AND OBJECTIVES: The aim of this study was to describe the basis for choosing a cannulation technique for arteriovenous fistula. BACKGROUND: Four cannulation techniques are relevant to cannulating an arteriovenous fistula: rope ladder, area puncture and buttonhole using blunt or sharp needles. The chosen technique may affect both the patency and number of complications. DESIGN: The study used a convergent mixed methods design and inductive approach...

BACKGROUND: The vascular access preservation and the maintenance of a complication-free fistula remains an Achilles' heel of hemodialysis in chronic kidney patients due to its substantial contribution to the morbidity and mortality. Systematic studies in the area of examining cannulation practices, achieving complication-free cannulation, and strategies to improve fistula survival are needed. For this reason, we consider it essential to create and investigate new methodologies for approaching fistula in patients on regular HD...

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BACKGROUND: Arteriovenous fistula (AVF) is the preferred access for chronic hemodialysis (HD) in children and adolescents, but central venous catheter use is still high. METHODS: Retrospective chart review of children and adolescents with AVF created between January 2003 and December 2015 was performed to assess primary failure (PF), maturation time, functional primary and functional cumulative patency, and potential risk factors for AVF dysfunction. RESULTS: Ninety-nine AVF were created in 79 patients (54% male; 7-24 years; 16-147 kg) by experienced surgeons...

BACKGROUND: Home hemodialysis (HHD) remains underused in patients with kidney failure. Current literature on HHD mostly originates from non-European countries, making generalization difficult. The present study describes patients' profile and practice patterns from a Belgian HHD center, and assesses patient and technique survival and complications associated with HHD. METHODS: We analyzed data from all our incident patients during a 6-year period. The patient's characteristics were summarized using descriptive statistics...

BACKGROUND: Based on a literature review of various studies, comparisons between BH and RL are inconclusive regarding some outcomes. However, in the last 5 years, some studies have been published that may contribute to clarifying which cannulation technique (CT) allows better fistula survival. AIM: To review which cannulation technique allows better primary patency of the arteriovenous fistula in haemodialysis patients. METHODS: We will include all randomised controlled trials and observational studies that include comparisons among CTs and thus define the benefits and risks of each CT...

AIMS AND OBJECTIVES: This study aims to explore the convenience and practicality of the method of establishing buttonholes with indwelling trocars. BACKGROUND: Compared with rope-ladder technique, buttonhole cannulation has better applicability for haemodialysis patients, and the method of buttonhole establishment is particularly important. DESIGN: Prospective, observational and cohort study. METHODS: We conducted a 12-month observational study on 30 patients who used sharp needles to establish buttonholes and 33 patients who used indwelling trocars to establish buttonholes, and compared the differences between the two groups in the buttonhole formation time, patient-reported cannulation pain, buttonhole success rate, AVF-related infection and patency of AVF...

Hemodialysis (HD) at home has gained increasing popularity in recent years because of regulatory and financial issues. Creation and maintenance of a well-functioning, cannulatable vascular access is essential for performance of home HD (HHD). A vascular access team-based approach to creation, maintenance, and troubleshooting of vascular access can facilitate removing barriers to cannulation at home related to fear of pain and bleeding associated with large bore needles. Frequent cannulation of HD access is associated with more frequent access complications, especially infections...

PURPOSE: To investigate long-term complications after pediatric cataract surgery with implantation of a heparin-coated polymethyl methacrylate intraocular lens (PMMA IOL) and posterior continuous curvilinear capsulorhexis (PCCC) with anterior vitrectomy vs PCCC without anterior vitrectomy with optic capture buttonholing. SETTING: Department of Ophthalmology, Goethe University, Frankfurt, Germany. DESIGN: Prospective randomized clinical trial...