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Pierpaolo Di Nicolò, Marina Cornacchiari, Marco Mereghetti, Anna Mudoni
As a consequence of the central role of the arteriovenous fistula for dialysis (AVF) in the clinical management of the dialysis patient the necessity to limit the puncture-related complications to extend as much as possible the life of the vascular access. Accordingly, the AVF needling technique has gained growing attention. Alongside the traditional rope ladder (RL) puncture method, the buttonhole technique (BH) is increasingly popular; this technique employs the same cannulation sites of AVF in every dialysis associated with the use of dull needles to minimize vessels damage...
September 27, 2016: Seminars in Dialysis
Syril Keena T Que, Naiara Fraga-Braghiroli, Jane M Grant-Kels, Harold S Rabinovitz, Margaret Oliviero, Alon Scope
No abstract text is available yet for this article.
July 2016: Dermatology Practical & Conceptual
Lorena Romero-Diaz-de-Leon, Juan Carlos Serna-Ojeda, Alejandro Navas, Enrique O Graue-Hernández, Arturo Ramirez-Miranda
PURPOSE: To report the rate of flap-related complications in LASIK surgery performed by in-training ophthalmology residents and to analyze the risk factors for these complications. METHODS: We analyzed 273 flap dissections in 145 patients from March 2013 to February 2014. We included all LASIK surgeries performed by 32 ophthalmology residents using a Moria M2 microkeratome. All the flap-related complications were noted. Comparison between both groups with and without complications was performed with an independent Student's t-test and relative risks were calculated...
July 2016: Journal of Ophthalmic & Vision Research
Su-Mi Shin, Jee Won Chai, Ja Yeon You, Jina Park, Kee Jeong Bae
"Buttonholing" of the radial head through the anterior joint capsule is a known cause of irreducible anterior radial head dislocation associated with Monteggia injuries in pediatric patients. To the best of our knowledge, no report has described an injury consisting of buttonholing of the radial head through the annular ligament and a simultaneous radial head fracture in an adolescent. In the present case, the radiographic findings were a radial head fracture with anterior dislocation and lack of the anterior fat pad sign...
October 2016: Skeletal Radiology
A Gargallo-Benedicto, D Hernández Pérez, Á Olate-Pérez, E Betancur-Delgado, M Cerdà-Ibáñez, A Duch-Samper
OBJECTIVE: To perform a 12 month follow-up study to assess the safety and effectiveness of resection and conjunctival autograft fixed with Tissucol® in selected cases of large pterygium. The orientation of the graft was adapted to the morphology of the scleral bed for a better coverage free of traction, with limbal position being lost. METHODS: A prospective, non-comparative study of 10 cases of grade II or superior pterygium (7 primary, 3 recurrent) with at least 8mm of limbal extension...
October 2016: Archivos de la Sociedad Española de Oftalmología
Annie-Claire Nadeau-Fredette, David W Johnson
Successful cannulation of arteriovenous fistulas (AVFs) using a safe and effective technique that minimizes patient harm is a crucial aspect of haemodialysis treatment. Although the current standard of care for many years has been the rope-ladder technique (using sharp needles to cannulate rotating sites across the entire AVF), a number of enthusiasts have recently advocated for the alternative method of buttonhole cannulation (using blunt needles to repeatedly cannulate the same site via a healed track) on the basis of putative, as yet unproven benefits...
April 2016: Nephrology, Dialysis, Transplantation
Laura Labriola, Michel Jadoul
Potential advantages of buttonhole (BH) cannulation over the standard rope-ladder technique have been claimed on the basis of small sized, potentially biased observational studies with a relatively short follow-up. On the contrary, randomized controlled trials (RCTs) show inconclusive or conflicting results. The uncertain benefit must thus be weighed against a definite increase in the infectious risk with the BH technique, which may not be completely abolished by preventative strategies. Awaiting the results of long-term studies (>2-3 years follow-up), the widespread use of the BH technique is not warranted, especially in busy in-centre haemodialysis (HD) settings with many rotating nurses...
April 2016: Nephrology, Dialysis, Transplantation
Gihad E Nesrallah
Arteriovenous fistulae remain the access of choice for most hemodialysis patients. However, several factors limit their uptake and long-term patency, resulting in suboptimal prevalent rates in many high-income countries. Patients place considerable value on the avoidance of vascular access complications, pain and disfigurement. The approach to cannulation is a modifiable practice that could improve patient-important outcomes, with buttonhole needling offering some theoretical advantages over the standard rope-ladder and area methods...
April 2016: Nephrology, Dialysis, Transplantation
Sophie Collier, Hala Kandil, Enat Yewnetu, Jennifer Cross, Ben Caplin, Andrew Davenport
Arteriovenous fistula (AVF) is the preferred access for hemodialysis (HD). Buttonhole (BH) needling has increased following the introduction of "blunt" fistula needles. Although some reported advantages for BH needling, others have reported increased infection risk. As such we reviewed our center practice, and the effect of both nasal screening and eradication and re-education and training programs. We audited the outcomes of 881 HD patients dialyzed between November 2009 and May 2012, divided into three groups: 175 dialyzing exclusively by central venous catheter (CVC), 478 exclusively by area needling AVF (AVF) and 219 by BH...
March 17, 2016: Therapeutic Apheresis and Dialysis
Ugur Unsal, Gonen Baser, Mehmet Soyler
The purpose of this study was to determine whether single-piece hydrophilic acrylic intraocular lens can be safely implanted without the use of ophthalmic viscosurgical devices. This retrospective study comprised 100 eyes having phacoemulsification and intraocular lens implantation without the use of ophthalmic viscosurgical device. 80 eyes with the use of a viscosurgical device are used as control group. In this intraocular lens implantation technique, the anterior chamber was maintained with an irrigation cannula and intraocular lens was implanted with a lens injector...
March 14, 2016: International Ophthalmology
Shigeki Toma, Takahiro Shinzato, Kunihiro Hayakawa
PURPOSE: In this study, we discuss a mechanism of development of access-related Staphylococcus aureus infections in patients on buttonhole (BH) method and logically construct a measure to prevent such infections on the basis of the mechanism. SUMMARY: S. aureus can colonize a BH track. Once S. aureus colonizes a BH track, access-related infections may develop when the equilibrium is upset between the factors of host resistance and a level of bacterial growth in a BH track...
2016: Blood Purification
Clémence Béchade, Tony Goovaerts, Philippe Cougnet, Laura Labriola, Michel Jadoul, Eric Goffin
BACKGROUND: Buttonhole cannulation (BHC) has been associated with a greater risk of arteriovenous fistula (AVF)-related infections and septicemia than the rope ladder cannulation (RLC) in in-center hemodialysis (HD). Such infections have never been studied in satellite HD units. STUDY DESIGN: Retrospective single center study. SETTING AND PARTICIPANT: All patients in our satellite HD unit using a native AVF from 1 January, 1990, to 31 December, 2012...
2015: PloS One
(no author information available yet)
No abstract text is available yet for this article.
January 2015: Nephrology News & Issues
Arthur H Salibian, Jay K Harness, Donald S Mowlds
BACKGROUND: Patients undergoing nipple-sparing mastectomy and immediate-implant based reconstruction occasionally require a mastopexy based on their breast size and degree of ptosis. Previous reports have shown the feasibility of mastopexy-nipple-sparing mastectomy in selected patients to raise the nipple up to 5 cm. Major mastopexy with nipple transposition more than 6 cm in conjunction with nipple-sparing mastectomy for therapeutic indications has not been described. The authors review their experience with primary buttonhole mastopexy performed in conjunction with nipple-sparing mastectomy...
October 2016: Annals of Plastic Surgery
Ehab O ElGanainy
OBJECTIVE: To compare the outcome of a modified onlay island flap (MOIF) with that of the Mathieu urethroplasty for distal hypospadias repair. PATIENTS AND METHODS: In a prospective randomised study, 60 patients with coronal, subcoronal and distal penile hypospadias, with a urethral plate width of ⩽6 mm, and minimal or no chordee, underwent either MOIF using a midline longitudinal outer preputial skin flap passed ventrally by penile buttonholing through dartos fascia incision, or a Mathieu urethroplasty...
September 2015: Arab Journal of Urology
Kunihiro Hayakawa, Daiki Sugiyama, Hiroaki Tanaka, Satoshi Shinohara, Takahiro Ohki, Akinori Muraoka, Masamiki Miwa
In Japan, use of a surgically superficialized brachial artery is recommended for vascular access in patients who are either unable to tolerate hemodialysis because of reduced cardiac function or who do not have vessels suitable for creation of an arteriovenous fistula. Superficializing a brachial artery involves relocating a portion of the artery into subcutaneous tissue and immobilizing the artery at that location. Superficialized artery access can result in certain serious complications, such as an aneurysm and/or stenosis...
2015: Contributions to Nephrology
Arnav Agarwal, Gihad Nesrallah
Buttonhole cannulation has drawn considerable interest in recent years, particularly with the proliferation of home hemodialysis. Touted benefits of this cannulation method include reduced pain, ease of use, reduced aneurysm formation, and overall greater patient satisfaction. However, recent studies have also suggested that systemic and local infection rates are higher with buttonhole cannulation compared with the standard rope-ladder method. In this review, we summarize recent systematic review findings and practice guidelines addressing the benefits and harms of buttonhole cannulation, and discuss the role of topical antimicrobial prophylaxis...
2015: Contributions to Nephrology
Shigeki Toma
BACKGROUND: A reason for the higher frequency of vascular access-related infections in buttonhole cannulation patients remains to be elucidated. If the higher frequency of infections is associated with a factor(s) inherent to the buttonhole method (e.g. existence of a buttonhole track or other factors), the frequency of such infections is expected to increase upon starting buttonhole cannulation. On the other hand, if the higher frequency of the infections is associated with a factor(s) developing secondarily while performing buttonhole cannulation for months or years (e...
2015: Contributions to Nephrology
Shoichi Sato, Takahiro Shinzato, Naoko Sakai, Katsuyuki Ohkuri, Masatomi Sasaki, Shigeru Nakai, Shigeki Toma
BACKGROUND: Vascular access-related infection is more frequent in patients using the buttonhole method for cannulation of the arteriovenous access for hemodialysis. Deformity of buttonhole entry sites is frequently observed among patients on the buttonhole method for extended periods of time. With deformed buttonhole entry sites, moreover, scabs are often incompletely removed at the time of buttonhole cannulation. METHOD: In 166 patients using the buttonhole method at Hino Clinic in Osaka, Japan as of June 30, 2014, the shapes of buttonhole entry sites were categorized into the following 3 types: flat, depressive deformity, and bulging deformity...
2015: Contributions to Nephrology
Takahiro Shinzato, Masatomi Sasaki, Noboru Ota, Kazuhiko Shibata, Hiroyoshi Fukui, Shigeki Toma, Kenji Maeda
BACKGROUND: Scab removal is a time-consuming process and often injures the skin at a buttonhole entry site. Incomplete removal of scabs may cause access-related infection. METHODS: In a new procedure, buttonhole entry sites were treated with a moist healing step after hemodialysis, and then a formed scab was wiped off with a microfiber towel during bathing on the night prior to hemodialysis, which was performed on the following day. In the moist healing step, the entry site was disinfected with a diluted povidone-iodine solution (0...
2015: Contributions to Nephrology
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