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https://www.readbyqxmd.com/read/29342278/dosimetry-of-adult-and-pediatric-patients-for-common-digital-radiography-examinations
#1
Bhupendra Singh Rana, Sanjeev Kumar, Inderjeet Singh Sandhu, Narinder Paul Singh
The present work reports dosimetry data on adult and pediatric patients for some common radiographic examinations during the standard hospital routine. The measurements are the part of quality assurance program to determine radiation exposures to patients in these examinations. The entrance skin doses (ESDs) of the patients were measured from 2451 projection for 12 diagnostic examinations in digital radiography (DR). The ESDs in adult patient were measured using thermoluminescence dosemeters placed on the skin of the patient...
January 12, 2018: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29340298/efficacy-and-safety-of-sedation-during-endoscopic-submucosal-dissection-of-gastric-cancers-using-a-comparative-trial-of-propofol-versus-midazolam
#2
Hitomi Kikuchi, Takuto Hikichi, Ko Watanabe, Jun Nakamura, Tadayuki Takagi, Rei Suzuki, Mitsuru Sugimoto, Yuichi Waragai, Naoki Konno, Hiroyuki Asama, Mika Takasumi, Yuki Sato, Katsutoshi Obara, Hiromasa Ohira
Background and study aims : Proper sedation is necessary for the safe and satisfactory completion of endoscopic submucosal dissection (ESD) for early gastric cancer. This study was conducted as a comparative trial of efficacy and safety, comparing propofol-based sedation and midazolam-based sedation during ESD of early gastric cancer patients. Patients and methods : This study examined 64 lesions in 58 patients treated using ESD with midazolam plus pentazocine between July 2013 and January 2014 (group M) and 237 lesions in 216 patients treated by ESD using propofol plus pentazocine between February 2014 and December 2015 (group P)...
January 2018: Endoscopy International Open
https://www.readbyqxmd.com/read/29340293/can-sedation-using-a-combination-of-propofol-and-dexmedetomidine-enhance-the-satisfaction-of-the-endoscopist-in-endoscopic-submucosal-dissection
#3
Takashi Nonaka, Masahiko Inamori, Tetsuya Miyashita, Yumi Inoh, Kenji Kanoshima, Takuma Higurashi, Hidenori Ohkubo, Hiroshi Iida, Koji Fujita, Akihiko Kusakabe, Takahisa Gotoh, Atsushi Nakajima
Background and study aims:  The aim of this pilot randomized controlled trial was to evaluate and compare the satisfaction of the endoscopist along with the effectiveness and safety of sedation between sedation protocol using a combination of propofol (PF) and dexmedetomidine (DEX) (Combination group) and sedation protocol using PF alone (PF group) during gastric endoscopic submucosal dissection (ESD). Patients and methods : Fifty-eight patients with gastric neoplasias scheduled for gastric ESD were enrolled and randomly assigned to the two groups...
January 2018: Endoscopy International Open
https://www.readbyqxmd.com/read/29335574/sexual-antagonism-and-the-instability-of-environmental-sex-determination
#4
Pavitra Muralidhar, Carl Veller
The sex of an organism can be determined by its genetics or its early environment. Across the animal kingdom, genetic sex determination (GSD) is far more common than environmental sex determination (ESD). Here, we propose an explanation for this pattern: the coupling of genes that bias offspring sex ratios towards one sex with genes that are beneficial in that sex but costly in the other. Gradual strengthening of the sex-specific tendency of this association eventuates in a neo-sex chromosome; that is, GSD...
January 15, 2018: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/29334527/transanal-minimally-invasive-anal-canal-polyp-resection
#5
Giovanni Dapri, Anny Cadenas Fabres, Olivier Nicod, Garces Duran Rodrigo, Vinciane Muls, Marc Van Gossum
Endoscopic mucosal resection and endoscopic submucosal dissection (ESD) are operative endoscopies that have been performed since a long time. Recently, an evolution of laparoscopy called transanal minimally invasive surgery began to be popularized, and it can be adopted in the face of difficult cases for endoscopic mucosal resection/ESD. In this video, a 36-year-old woman was submitted to transanal minimally invasive surgery resection, after unsuccessful ESD, for a 2-cm polyp located anteriorly in the anal canal, just beyond the pectineal line...
January 12, 2018: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/29331274/clinical-outcomes-of-endoscopic-submucosal-dissection-for-large-colorectal-laterally-spreading-tumors-in-older-adults
#6
Jing Jing Lian, Li Li Ma, Yi Qun Zhang, Wei Feng Chen, Yun Shi Zhong, Mei Dong Xu, Ping Hong Zhou, Shi Yao Chen
BACKGROUND AND AIMS: The colorectal endoscopic submucosal dissection (ESD) remains technically challenging, especially for older patients who frequently encounter complex chronic diseases and have a loose colon. However, only limited number of studies are available for the safety of ESD in older patients with especially large laterally spreading tumors. Therefore, in this retrospective study, we compared the outcomes of ESD for laterally spreading tumors (LST) ≥3cm(cm) in older patients to that in younger patients...
January 10, 2018: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/29313127/efficacy-of-innovative-polyglycolic-acid-sheet-device-delivery-station-system-a-randomized-prospective-study
#7
Hirohito Mori, Yu Guan, Hideki Kobara, Seiki Kobayashi, Noriko Nishiyama, Nobuya Kobayashi, Tsutomu Masaki
BACKGROUND: Although there have been several reports of treating large post-endoscopic submucosal dissection (ESD) ulcers by covering them with a polyglycolic acid sheet (PGAs), this approach presents problems regarding PGAs delivery. This study assessed the usefulness of a device delivery station system (DDSS) to evaluate the appropriate and rapid PGAs coating method with DDSS. METHODS: Thirty-nine of 41 patients who were diagnosed with early gastric cancer over 20 mm in diameter and pathologically diagnosed with well-differentiated adenocarcinoma were randomly allocated to the following two groups according to delivery method: the conventional PGAs delivery group (C group) (n = 19) and the new DDSS group (DDSS group) (n = 20)...
January 8, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29312709/photodynamic-therapy-versus-endoscopic-submucosal-dissection-for-management-of-patients-with-early-esophageal-neoplasia-a-retrospective-study
#8
Xionghuai Hua, Yin Li, Haibo Ma, Wei Zhang, Jianjun Qin, Jun Zhang, Haixia Cao
Background: Photodynamic therapy (PDT) and endoscopic submucosal dissection (ESD) have been proposed as a treatment for early esophageal neoplasia. The objective of this study is to compare between the clinical outcome after ESD and PDT to reach the best management for early esophageal neoplasia. Methods: All patients undergoing ESD or PDT for early esophageal neoplasia between 2014 and 2015 were eligible for the study. A retrospective analysis for comparison between the results of ESD and PDT was done...
December 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29310111/vonoprazan-is-superior-to-rabeprazole-for-healing-endoscopic-submucosal-dissection-induced-ulcers
#9
Akira Yamasaki, Toshiyuki Yoshio, Yusuke Muramatsu, Yusuke Horiuchi, Akiyoshi Ishiyama, Toshiaki Hirasawa, Tomohiro Tsuchida, Yutaka Sasaki, Junko Fujisaki
BACKGROUND AND AIMS: Endoscopic submucosal dissection (ESD) is a well-established minimally invasive treatment for early gastric cancer. To heal ESD-induced ulcers, we commonly prescribe proton pump inhibitors (PPIs). Vonoprazan is our new choice, which is reported to have a stronger and longer acid inhibitory effect than existing PPIs. Here, we aimed to evaluate the efficacy of vonoprazan for healing ESD-induced ulcers compared with rabeprazole. METHODS: We reviewed 190 patients who underwent ESD before and after we switched the acid secretion inhibitor from rabeprazole to vonoprazan...
January 8, 2018: Digestion
https://www.readbyqxmd.com/read/29308541/heparin-bridging-therapy-and-risk-of-bleeding-after-endoscopic-submucosal-dissection-for-gastric-neoplasms-a-meta-analysis
#10
REVIEW
Veeravich Jaruvongvanich, Tomoki Sempokuya, Karn Wijarnpreecha, Patompong Ungprasert
PURPOSE: Peri-procedural heparin is recommended as bridging therapy for patients with high thromboembolic risk who need to withhold anticoagulant for endoscopic submucosal dissection (ESD) for gastric neoplasms. However, little is known about the bleeding risk from heparin-bridging therapy itself. METHODS: MEDLINE and EMBASE databases were searched through August 2017 for studies that compared the risk of post-ESD bleeding in patients who received heparin-bridging therapy in lieu of anticoagulant for gastric neoplasms and those who discontinued anticoagulant without receiving heparin...
January 7, 2018: Journal of Gastrointestinal Cancer
https://www.readbyqxmd.com/read/29302739/comparison-of-endo-cut-mode-and-forced-coag-mode-for-the-formation-of-stricture-after-esophageal-endoscopic-submucosal-dissection-in-an-in-vivo-porcine-model
#11
Masamichi Arao, Ryu Ishihara, Yusuke Tonai, Taro Iwatsubo, Satoki Shichijyo, Noriko Matsuura, Hiroko Nakahira, Sachiko Yamamoto, Yoji Takeuchi, Koji Higashino, Noriya Uedo, Shinichi Nakatsuka
BACKGROUND AND STUDY AIM: Stricture is a major complication of esophageal endoscopic submucosal dissection (ESD) for superficial esophageal carcinoma. To date, various methods have been developed to prevent stricture. However, the mechanism by which different electrosurgical unit (ESU) modes affect the formation of post-ESD stricture has not been evaluated. This study aimed to compare the degree of stricture caused by two major ESU modes (ENDO CUT mode and FORCED COAG mode) in a porcine model...
January 4, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29290911/gastric-endoscopic-submucosal-dissection-as-a-treatment-for-early-neoplasia-and-for-accurate-staging-of-early-cancers-in-a-united-kingdom-caucasian-population
#12
Aisha Sooltangos, Matthew Davenport, Stephen McGrath, Jonathan Vickers, Siba Senapati, Kurshid Akhtar, Regi George, Yeng Ang
AIM: To investigate the efficacy of endoscopic submucosal dissection (ESD) at diagnosing and treating superficial neoplastic lesions of the stomach in a United Kingdom Caucasian population. METHODS: Data of patients treated with or considered for ESD at a tertiary referral center in the United Kingdom were retrieved for a period of 2 years (May 2015 to June 2017) from the electronic patient records of the hospital. Only Caucasian patients were included. Primary outcomes were curative resection (CR) and were defined as ESD resections with clear horizontal and vertical margin and an absence of lympho-vascular invasion, poor differentiation and submucosal involvement on histological evaluation of the resected specimen...
December 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29289076/limitations-on-estimation-of-effective-scatterer-diameters
#13
Yang Zhu, Aiguo Han, William D O'Brien, Michael L Oelze, Michael F Insana
The influence of spatial diversity in acoustic scattering properties on estimates of the effective scatterer diameter (ESD) applied to soft biological tissues is investigated. This study is based on two-dimensional simulations of scattering media, beginning with random distributions of simple disk structures where all scattering features are known exactly. It concludes with an analysis of histology maps from healthy and fatty rabbit liver. Further, the liver histology is decomposed using an orthonormal basis to separate acoustic scattering at various spatial scales and observe how it influences ESD estimates...
December 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29282635/endoscopic-submucosal-dissection-of-early-gastric-cancer-in-patients-with-liver-cirrhosis
#14
Won Hyeok Choe, Jeong Hwan Kim, Jung Ho Park, Heung Up Kim, Dae Hyeon Cho, Sang Pyo Lee, Tae Yoon Lee, Sun-Young Lee, In Kyung Sung, Hyung Seok Park, Chan Sup Shim
BACKGROUND AND OBJECTIVES: Endoscopic submucosal dissection (ESD) has become widely accepted method for treating early gastric cancer (EGC), but little is known about its role in patients with liver cirrhosis (LC). The aims of this study were to evaluate the outcomes of ESD in treating EGC in patients with LC. METHODS: The multicenter retrospective study identified 43 patients with chronic hepatitis B (CHB)-related cirrhosis undergoing ESD for treating EGC. The patients (LC group) were subdivided into two groups based on their Child-Pugh classification (CP-class): 32 with CP-class A (LC-A) and 11 with CP-class B (LC-B)...
December 27, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29280013/preoperative-predictors-of-beyond-endoscopic-submucosal-dissection-indication-or-lymphovascular-invasion-in-endoscopic-resection-for-early-gastric-cancer
#15
Su Jin Kim, Cheol Woong Choi, Dae Hwan Kang, Hyung Wook Kim, Su Bum Park, Hyeong Seok Nam, Dae Gon Ryu
BACKGROUND: To successfully resect early gastric cancer (EGC), prediction of lymph node metastasis is essential. Beyond endoscopic submucosal dissection (ESD) indication or lymphovascular invasion (LVI) are known risk factors associated with lymph node metastasis. However, accurate prediction of tumor invasion depth or LVI is impossible before endoscopic resection even when endoscopic ultrasound is used. The aim of this study was to identify the predictive factors associated with beyond ESD indication or LVI after ESD for EGC...
December 26, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29276220/metachronous-neoplasia-and-local-recurrence-after-colorectal-endoscopic-submucosal-dissection
#16
Daisuke Takei, Keita Harada, Shiho Takashima, Toshihiro Inokuchi, Asuka Nakarai, Yusaku Sugihara, Masanobu Takahara, Sakiko Hiraoka, Hiroyuki Okada
Several reports discussed colonoscopic surveillance after polypectomy and endoscopic mucosal resection (EMR) for colorectal polyps, but only a few reports focused on prognostic analyses, and none involved metachronous neoplasia after colorectal endoscopic submucosal dissection (ESD). We conducted the present study to assess the risk of adenoma recurrence requiring endoscopic treatment, and to establish appropriate post-ESD colonoscopic surveillance. We enrolled 116 patients who had undergone colorectal ESD at Okayama University Hospital between February 2008 and July 2014 and had been followed-up >12 months...
December 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/29273872/comparison-of-oral-and-intravenous-lansoprazole-for-the-prevention-of-bleeding-from-artificial-ulcers-after-endoscopic-submucosal-dissection-for-gastric-tumors-a-prospective-randomized-phase-ii-study-kdog-0802
#17
Kenji Ishido, Satoshi Tanabe, Mizutomo Azuma, Chikatoshi Katada, Takuya Wada, Takafumi Yano, Wasaburo Koizumi
BACKGROUND: Very few studies have evaluated the effectiveness of oral proton-pump inhibitors for the prevention of bleeding after endoscopic submucosal dissection (ESD) for gastric tumors. The aim of our study was to establish the non-inferiority of lansoprazole orally disintegrating (OD) tablets to intravenous lansoprazole for the prevention of bleeding from artificial ulcers after ESD. PATIENTS AND METHODS: Consecutive patients who underwent ESD for gastric tumors were randomly assigned to receive lansoprazole OD tablets (OD group) or intravenous lansoprazole (IV group)...
December 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29259386/endoscopic-submucosal-dissection-in-a-patient-with-esophageal-adenoid-cystic-carcinoma
#18
Kenichi Yoshikawa, Akiyoshi Kinoshita, Yuki Hirose, Keiko Shibata, Takafumi Akasu, Noriko Hagiwara, Takeharu Yokota, Nami Imai, Akira Iwaku, Go Kobayashi, Hirohiko Kobayashi, Nao Fushiya, Hiroyuki Kijima, Kazuhiko Koike, Haruka Kaneyama, Keiichi Ikeda, Masayuki Saruta
We report the first use of endoscopic submucosal dissection (ESD) for the treatment of a patient with adenoid cystic carcinoma of the esophagus (EACC). An 82-year-old woman visited our hospital for evaluation of an esophageal submucosal tumor. Endoscopic examination showed a submucosal tumor in the middle third of the esophagus. The lesion partially stained with Lugol's solution, and narrow band imaging with magnification showed intrapapillary capillary loops with mild dilatation and a divergence of caliber in the center of the lesion...
December 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29249913/new-strategies-to-improve-polypectomy-during-colonoscopy
#19
Michael B Wallace
In the United States, colorectal cancer (CRC) is the second-leading cause of cancer-related deaths. The most effective strategy for prevention of CRC is to screen for and remove precancerous polyps. There are various ways to screen for CRC. In the United States, the most common method is colonoscopy. Polyps are classified primarily through pathology. Size is the primary risk factor for malignancy. In general, the bigger the polyp, the greater the risk for malignancy. There are 3 basic options for removal: standard polypectomy; advanced resection techniques, known as endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD); and surgical removal...
October 2017: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29246047/synthesis-of-complex-organic-molecules-in-simulated-methane-rich-astrophysical-ices
#20
Sasan Esmaili, Andrew D Bass, Pierre Cloutier, Léon Sanche, Michael A Huels
It has been proposed that organic molecules required for life on earth may be formed by the radiation processing of molecular ices in space environments, e.g., within our solar system. Such processes can be studied in the laboratory with surface science analytical techniques and by using low-energy electron (LEE) irradiation to simulate the effects of the secondary electrons that are generated in great abundance whenever ionizing radiation interacts with matter. Here we present new measurements of 70 eV LEE irradiation of multilayer films of CH4, 18O2, and CH4/18O2 mixtures (3:1 ratio) at 22 K...
December 14, 2017: Journal of Chemical Physics
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