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https://www.readbyqxmd.com/read/28741735/argon-plasma-coagulation-for-successful-fragmentation-and-removal-of-an-over-the-scope-clip-otsc
#1
Samir Kapadia, Satish Nagula, Nikhil A Kumta
The over-the-scope-clip (OTSC) (Ovesco Endoscopy, Tübingen, Germany) is a revolutionary endoscopic tool for management of fistulas, perforations, and leaks [1]. Removal of an OTSC is rare and oftentimes challenging. We describe a simple and reproducible technique utilizing argon plasma coagulation (APC) to fracture the OTSC hinge to facilitate extraction. This article is protected by copyright. All rights reserved.
July 25, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28740687/infections-causing-central-airway-obstruction-role-of-bronchoscopy-in-diagnosis-and-management
#2
REVIEW
Sevak Keshishyan, Lawrence DeLorenzo, Kassem Hammoud, Arpine Avagyan, Hussein Assallum, Kassem Harris
Central airway obstructive infections (CAOI) are challenging medical conditions that may represent an advanced and complicated process of ongoing infections. The epidemiology of CAOI is unknown as well as the pathophysiology and the mechanism of development. This is due to sparse data in the literature that consists mainly of case reports and retrospective case series. CAOI can be caused by fungal, bacterial, parasitic and viral infections. Most patients with CAOI can be diagnosed clinically and with chest imaging, which demonstrate obstruction of the central airways...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28731708/argon-plasma-induced-phase-transition-in-monolayer-mos2
#3
Jianqi Zhu, Zhichang Wang, Hua Yu, Na Li, Jing Zhang, Jianling Meng, Mengzhou Liao, Jing Zhao, Xiaobo Lu, Luojun Du, Rong Yang, Dongxia Shi, Ying Jiang, Guangyu Zhang
In this work, we report a facile, clean, controllable and scalable phase engineering technique for monolayer MoS2. We found that weak Ar-plasma bombardment can locally induce 2H→1T phase transition in monolayer MoS2 to form mosaic structures. These 2H→1T phase transitions are stabilised by point defects (single S-vacancies) and the sizes of induced 1T domains are typically a few nanometers, as revealed by scanning tunneling microscopy measurements. Based on a selected-area phase pat-terning process, we fabricated MoS2 FETs inducing 1T phase transition within the metal contact areas, which exhibit substantially improved device performances...
July 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28730456/photofunctionalization-and-non-thermal-plasma-activation-of-titanium-surfaces
#4
Anders Henningsen, Ralf Smeets, Philip Hartjen, Oliver Heinrich, Roman Heuberger, Max Heiland, Clarissa Precht, Claudio Cacaci
OBJECTIVE: The aim of this study was to compare UV light and non-thermal plasma (NTP) treatment regarding the improvement of physical material characteristics and cell reaction on titanium surfaces in vitro after short-term functionalization. MATERIALS AND METHODS: Moderately rough (Ra 1.8-2.0 μm) sandblasted and acid-etched titanium disks were treated by UV light (0.05 mW/cm(2) at λ = 360 nm and 2 mW/cm(2) at λ = 250 nm) or by NTP (24 W, -0.5 mbar) of argon or oxygen for 12 min each...
July 20, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28730139/gastric-hemangioma-treated-with-argon-plasma-coagulation-in-a-newborn-infant
#5
Young Ah Lee, Peter Chun, Eun Ha Hwang, Yeoun Joo Lee, Chang Won Kim, Jae Hong Park
Gastric hemangioma in the neonatal period is a very rare cause of upper gastrointestinal bleeding. We present a case of hemangioma limited to the gastric cavity in a 10-day-old infant. A huge, erythematous mass with bleeding was observed on the lesser curvature side of the upper part of the stomach. Surgical resection was ruled out because the location of the lesion was too close to the gastroesophageal junction. Medical treatment with intravenous H2 blockers, octreotide, packed red blood cell infusions, local epinephrine injection at the lesion site, application of hemoclip, and gel-form embolization of the left gastric artery did not significantly alter the transfusion requirement...
June 2017: Pediatric Gastroenterology, Hepatology & Nutrition
https://www.readbyqxmd.com/read/28728314/local-recurrence-and-its-risk-factor-after-incomplete-resection-of-colorectal-advanced-adenomas-a-single-center-retrospective-study
#6
Dae Myung Oh, Jae Kwang Lee, Hyunsoo Kim, Chang Keun Park, Jae Kwon Jung, Dae Jin Kim, Yun Jin Chung, Tae Hoon Kim, Myung Il Park, Jong Pil Park
Background/Aims: Colonoscopy can detect precancerous lesions, which can subsequently be removed and reduce incidences of and mortality from colorectal cancer (CRC). However, recently published data have highlighted a significant rate of CRC in patients who previously underwent colonoscopy. Among many reasons, incomplete resection has been considered as a significant contributor. However, to date, there have only been a few studies regarding incompletely resected polyps, especially advanced colorectal adenoma (ACA)...
July 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28727635/salvage-endoscopic-argon-plasma-coagulation-after-chemoradiotherapy-for-inoperable-esophageal-cancer
#7
Takeshi Matsutani, Tsutomu Nomura, Nobutoshi Hagiwara, Akihisa Matsuda, Eiji Uchida
PURPOSE: The purpose of this study is to evaluate the effectiveness of salvage endoscopic argon plasma coagulation (APC) therapy for local failure occurring after definitive chemoradiotherapy (CRT) in patients with inoperable esophageal cancer. PATIENTS AND METHODS: A total of 47 patients with esophageal squamous cell carcinoma received CRT from January 2009 through November 2011 in our hospital. Thirty-five of these patients were excluded because of long-term disease-free status or because they received salvage surgery, systemic chemotherapy, or best supportive care...
July 19, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28726433/gastric-antral-vascular-ectasia-and-solitary-rectal-ulcer-syndrome-two-rare-diagnoses-as-the-cause-of-anemia-in-a%C3%A2-single-patient-case-report
#8
Lumír Kunovský, Milan Dastych, Radek Kroupa, Beata Hemmelova, Katarina Muckova, Miroslava Chovancova, Lenka Kucerova, Jiri Dolina
Gastric antral vascular ectasia (GAVE) and solitary rectal ulcer syndrome (SRUS) are both mentioned in the literature as rare causes of iron deficiency anemia and gastrointestinal (GI) bleeding. GAVE accounts for up to 4 % of upper non-variceal GI bleeding; SRUS is a rare benign disorder that presents with rectal bleeding. We present the case of a 75-year-old patient who was admitted to our facility with anemia. In the same patient, we encountered chronic bleeding from GAVE and SRUS. Both diagnoses were treated endoscopically: GAVE by argon plasma coagulation and a subsequent treatment with proton pump inhibitors and SRUS by adrenaline injection and clipping, consecutively treated with mesalazine enemas...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28721343/upper-gastrointestinal-bleeding-in-patients-with-end-stage-renal-disease-causes-characteristics-and-factors-associated-with-need-for-endoscopic-therapeutic-intervention
#9
Syed Mudassir Laeeq, Abbas Ali Tasneem, Farina M Hanif, Nasir Hassan Luck, Rajesh Mandhwani, Rajesh Wadhva
BACKGROUND AND OBJECTIVES: The risk of upper gastrointestinal bleeding (UGIB) is increased among the end-stage renal disease (ESRD) patients. The aim of the current study was to describe the causes and characteristics of UGIB in ESRD patients at our center and to assess the need for endoscopic therapeutic intervention (ETI) using Rockall (RS) and Glasgow Blatchford scores (GBS). MATERIAL AND METHODS: All patients with ESRD and UGIB with age ≥14 years were included...
June 2017: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28721219/two-rare-manifestations-of-primary-hyperparathyroidism-paralysis-and-peptic-ulcer-bleeding
#10
Maryam Heidarpour, Mehdi Karami, Pegah Hedayat, Ashraf Aminorroaya
Primary hyperparathyroidism revealed by thoracic spine brown tumor and peptic ulcer bleeding is rare. We presented a case of 33-year-old male patient who was admitted with paraplegia. Thoracic spine magnetic resonance imaging (MRI) showed extradural lesion at T4 level. He underwent surgical decompression in T4. According to histopathologic finding and elevated serum parathormone (PTH) and hypercalcemia (total serum calcium 12.1 mg/dL), the diagnosis of brown tumor was down. Ultrasonography of his neck showed a well-defined lesion of 26 × 14 × 6 mm...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28707144/efficacy-and-safety-of-argon-plasma-coagulation-in-the-management-of-extensive-chronic-radiation-proctitis-after-pelvic-radiotherapy-for-cervical-carcinoma
#11
Shyama Prem Sudha, D Kadambari
INTRODUCTION: Chronic radiation proctitis (CRP) usually develops 90 days or more after radiation. Currently, there is no standard available for the treatment of CRP. In argon plasma coagulation, monopolar diathermy is used to ionise the argon gas which coagulates the telengiectatic vessels in a noncontact fashion. However, there are very few studies which have reported its use in extensive CRP. We report the efficacy and safety of APC in seven patients with recurrent, extensive grade 3 radiation proctitis...
July 13, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28706297/harmless-effects-of-argon-plasma-on-caudal-fin-regeneration-and-embryogenesis-of-zebrafish-novel-biological-approaches-for-safe-medical-applications-of-bioplasma
#12
Min-Kyung Nam, Goo-Young Kim, Si-Eun Yun, Ja-Young Jang, Yong-Hee Kim, Eun Ha Choi, Seongman Kang, Hyangshuk Rhim
The argon plasma jet (Ar-PJ) is widely used in medical fields such as dermatology and dentistry, and it is considered a promising tool for cancer therapy. However, the in vivo effects of Ar-PJ for medical uses have not yet been investigated, and there are no biological tools to determine the appropriate clinical dosages of Ar-PJ. In this study, we used the caudal fin and embryo of zebrafish as novel in vivo tools to evaluate the biosafety of Ar-PJ. Typically, Ar-PJ is known to induce cell death in two-dimensional (2D) cell culture systems...
July 14, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28702102/evaluation-of-argon-plasma-coagulation-in-healing-of-a-solitary-rectal-ulcer-in-comparison-with-conventional-therapy-a-randomised-controlled-trial
#13
Farzad Jassemi Zergani, Ali Akbar Shaiesthe, Eskandar Hajiani, Jalal Hashemi, Rahim Masjedizadeh, Vaheid Sebghatollahei, Pejman Alavinejad, Ahmad Kadkhodaei, Kambeiz Akhavan, Saeid Seyyedian
INTRODUCTION: Argon plasma coagulation (APC) has been reported to be effective in the treatment of solitary rectal ulcer syndrome (SRUS). However, it has not appeared to be effective in healing ulcers. AIM: This study aimed at assessing the effectiveness of APC in controlling rectal ulcer-induced bleeding, and at examining the ultimate effect of this approach in healing these lesions. MATERIAL AND METHODS: This randomised, controlled trial was conducted on 99 patients with SRUS...
2017: Przegla̜d Gastroenterologiczny
https://www.readbyqxmd.com/read/28700010/argon-plasma-versus-electrofulguration-in-the-treatment-of-anal-and-perianal-condylomata-acuminata-in-patients-with-acquired-immunodeficiency-virus
#14
Eduardo Angelo Braga, Gaspar de Jesus Lopes, Sarhan Sydney Saad
Purpose: To compare the effectiveness of anal and perianal condylomata treatment using argon plasma and electrofulguration. Methods: From January 2013 to April 2014, 37 patients with anal and perianal condylomata, who had been diagnosed through proctological examination, oncotic cytology, polymerase chain reaction (PCR) and histology, underwent treatment with argon plasma and electrofulguration. The perianal and anal regions were divided into two semicircles. Each semicircle was treated using one of the methods by means of simple randomization...
June 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28690769/endoscopic-resolution-and-recurrence-of-gastric-antral-vascular-ectasia-after-serial-treatment-with-argon-plasma-coagulation
#15
Shashank Garg, Bilal Aslam, Nicholas Nickl
AIM: To evaluate long-term endoscopic resolution and recurrence rate of gastric antral vascular ectasia (GAVE) after argon plasma coagulation (APC) treatment. METHODS: This was an IRB-approved retrospective single center study that included patients endoscopically treated for GAVE between 1/1/2008 to 12/31/2014. The primary and secondary end points of the study were rate of endoscopic resolution of GAVE after APC treatment and recurrence rate of GAVE after endoscopic resolution, respectively...
June 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28663938/microplasma-assisted-hydrogel-fabrication-a-novel-method-for-gelatin-graphene-oxide-nano-composite-hydrogel-synthesis-for-biomedical-application
#16
Mantosh Kumar Satapathy, Wei-Hung Chiang, Er-Yuan Chuang, Chih-Hwa Chen, Jia-Liang Liao, Huin-Ning Huang
Toxicity issues and biocompatibility concerns with traditional classical chemical cross-linking processes prevent them from being universal approaches for hydrogel fabrication for tissue engineering. Physical cross-linking methods are non-toxic and widely used to obtain cross-linked polymers in a tunable manner. Therefore, in the current study, argon micro-plasma was introduced as a neutral energy source for cross-linking in fabrication of the desired gelatin-graphene oxide (gel-GO) nanocomposite hydrogel scaffolds...
2017: PeerJ
https://www.readbyqxmd.com/read/28662202/innovative-non-thermal-plasma-disinfection-process-inside-sealed-bags-assessment-of-bactericidal-and-sporicidal-effectiveness-in-regard-to-current-sterilization-norms
#17
Zouhaier Ben Belgacem, Gaëlle Carré, Emilie Charpentier, Florian Le-Bras, Thomas Maho, Eric Robert, Jean-Michel Pouvesle, Franck Polidor, Sophie C Gangloff, Mohamed Boudifa, Marie-Paule Gelle
In this work, we developed a device capable to generate a non-thermal plasma discharge inside a sealed bag. The aim of this study was to assess the effectiveness of the oxygen, nitrogen and argon plasma sterilization on Pseudomonas aeruginosa, Staphylococcus aureus and Bacillus subtilis spores according to the NF EN 556 Norm. Moreover the bag integrity which is a critical key to maintain the sterile state of items after the end of the process was verified by Fourier Transform Infrared (FTIR) and X-ray Photoelectron Spectrometry (XPS) analyses...
2017: PloS One
https://www.readbyqxmd.com/read/28661266/argon-and-helium-plasma-coagulation-of-porcine-liver-tissue
#18
Tim R Glowka, Jens Standop, Pascal Paschenda, Michael Czaplik, Jörg C Kalff, René H Tolba
Objective Argon plasma coagulation (APC) and helium plasma coagulation (HPC) are electrosurgical techniques that provide noncontact monopolar electrothermal haemostasis. Although these techniques have been widely used clinically during the last three decades, their in vivo effects on liver tissue remain unclear. Methods We investigated the effects of different power levels (10-100 W) of APC and HPC on liver coagulation in 11 Landrace pigs. Capillary blood flow and capillary blood flow velocity were recorded with a combined laser Doppler flowmeter and spectrophotometer...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28655478/the-impact-of-argon-oxygen-low-pressure-plasma-on-shear-bond-strength-between-a-veneering-composite-and-different-peek-materials
#19
Andreas Dominik Schwitalla, Friederike Bötel, Tycho Zimmermann, Mona Sütel, Wolf-Dieter Müller
OBJECTIVE: The aim of the study was to evaluate the impact of low-pressure argon/oxygen plasma with and without previous sandblasting on the shear bond strength (SBS) between dental PEEK compounds and a veneering composite. METHODS: Of one type of unfilled PEEK and two pigment powder filled PEEK compounds, forty rectangular plates each were prepared and polished up to 4000 grit. The samples were randomly assigned to four surface pre-treatment groups, each consisting of ten specimens (1...
June 24, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28655324/the-topical-application-of-low-temperature-argon-plasma-enhances-the-anti-inflammatory-effect-of-jaun-ointment-on-dncb-induced-nc-nga-mice
#20
Jeong-Hae Choi, Yeon-Suk Song, Hae-June Lee, Gyoo-Cheon Kim, Jin-Woo Hong
BACKGROUND: Jaun-ointment (JO), also known as Shiunko in Japan, is one of the most popular medicinal formulae used in Korean traditional medicine for the external treatment of skin wound and inflammatory skin conditions. Since JO is composed of crude mixture of two herbal extracts (radix of Lithospermum erythrorhizon Siebold & Zucc and Angelica gigas Nakai), those been proved its anti-inflammatory activities in-vitro and in-vivo, JO has been expected as a good alternative treatment option for atopic dermatitis (AD)...
June 27, 2017: BMC Complementary and Alternative Medicine
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