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Y Zhang, M Chao, X Zhang, Z Wang, D Fan, K Zhang, Y Cai, C Liang
PURPOSE: To evaluate the safety, efficacy and merits of laparoscopic repair in children with hydroceles by comparing the outcomes of laparoscopic repair and the traditional open repair (OR) procedure. The outcomes of the following three laparoscopic percutaneous extra-peritoneal closure (LPEC) approaches were also compared: conventional two-port surgery, transumbilical single-site two-port surgery and single-port surgery. METHODS: We retrospectively compared the demographic, perioperative and follow-up data from the consecutive records obtained for 382 boys who underwent OR and 950 boys who underwent LPEC at two children's medical centres in China...
December 14, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
Hsu-Dong Sun, Huann-Cheng Horng, Chia-Hao Liu, Sheng-Mou Hsiao, Yi-Jen Chen, Wen-Hsun Chang, Peng-Hui Wang
BACKGROUND: To compare the short-term outcome of patients undergoing single-port laparoscopic salpingectomy (SP-LS) and conventional three-port laparoscopic salpingectomy (C-LS). METHODS: A retrospective evaluation of 112 patients with tubal pregnancies treated by one surgeon at a single teaching hospital. Among these, 47 patients were treated with SP-LS and the remaining 65 were treated with C-LS. RESULTS: The characteristics of patients were similar in both groups...
December 7, 2017: Journal of the Chinese Medical Association: JCMA
Nicolas Chatron, Lucie Thibault, James Lespinasse, Audrey Labalme, Caroline Schluth-Bolard, Marianne Till, Patrick Edery, Renaud Touraine, Vincent des Portes, Gaetan Lesca, Damien Sanlaville
We report a 3-generation family in which 2 Xp copy number variations (CNVs) co-segregate. The proband presented with syndromic intellectual disability. The CNV had been revealed by conventional karyotyping, identifying a large Xp22 duplication causing an Xp functional disomy. Family studies found that this duplication was inherited from the proband's mother and was also present in one of his sisters. This sister had conventional karyotyping performed during pregnancy with a normal result. Postnatally, her child, the proband's nephew, presented with autism spectrum disorders...
November 2017: Molecular Syndromology
YongHyun Ha, Chang-Hoon Choi, Wieland A Worthoff, Aliaksandra Shymanskaya, Michael Schöneck, Antje Willuweit, Jörg Felder, N Jon Shah
A folded four-ring quadrature birdcage coil was designed and constructed with a double-tune configuration of an outer high-pass coil for 1H (400 MHz) and inner low-pass coil for 23Na (105.72 MHz at 9.4 T). The coil was evaluated on the bench and in the scanner, comparing its performance with that of single-tuned coils and a large four-ring coil. All coils were tuned and matched and the isolation between two quadrature ports was found to be better than -13.7 dB for 1H and -27 dB for 23Na. Signal-to-noise ratios (SNRs) were calculated and 23Na flip angle maps were acquired...
December 6, 2017: Journal of Magnetic Resonance
John Warmenhoven, Richard Smith, Conny Draper, Andrew Harrison, Norma Bargary, Stephen Cobley
Asymmetries of the rowing stroke cycle have been assessed with reference to kinematics and foot-force measures in laboratory testing environments. It remains unclear how asymmetries in propulsive kinetic measures are related to on-water rowing performance. A new approach for the evaluation of both global and local asymmetries across the entire movement was used to assess the continuous role of asymmetries and whether these change according to level of competitive representation. Twenty seven highly skilled female rowers (national and international competition level), rowing at 32 strokes per minute in a single scull boat were evaluated...
December 9, 2017: Scandinavian Journal of Medicine & Science in Sports
Yu Jiang
We present a transfer matrix formalism for studying quantum interference in a single molecule electronic system with internal branched structures. Based on the Schrödinger equation with the Bethe ansatz and employing Kirchhoff's rule for quantum wires, we derive a general closed-form expression for the transmission and reflection amplitudes of a two-port quantum network. We show that the transport through a molecule with complex internal structures can be reduced to that of a single two-port scattering unit, which contains all the information of the original composite molecule...
December 7, 2017: Journal of Chemical Physics
Jia-Tao Zhang, Song Dong, Xue-Ning Yang, Yi-Long Wu, Wen-Zhao Zhong
Here we introduce a manual tunnel approach to remove the mediastinal lymph nodes and highlight the conception of non-clamping during dissection. We describe two cases of pulmonary malignancy performing a strategic lobectomy and systemic dissection of mediastinal lymph nodes via single port. The technique of tunnel dissection without clamping ensure to satisfy the requirement of oncology and clinical criteria. By efficiently specifying surgery procedure and improving dissection thoroughness, our approach should be implemented...
September 2017: Journal of Thoracic Disease
Brian Petrovsky, Eric Monnet
OBJECTIVE: To determine the efficacy of repeated decontamination and sterilization of a disposable port intended for 1-time use during single-incision laparoscopy. STUDY DESIGN: Experimental; prospective, controlled design. METHODS: Six single-access ports used 4 times and 6 single-access ports used 8 times to perform various clean, minimally invasive surgeries were evaluated. Ports were decontaminated in an enzymatic cleaner (dilution, 3:100) and cleaned with a scrub brush for 5 minutes...
December 8, 2017: Veterinary Surgery: VS
Ryoichi Tsukamoto, Kazuhiro Sakamoto, Kumpei Honjo, Koichiro Niwa, Kiichi Sugimoto, Shun Ishiyama, Hirohiko Kamiyama, Makoto Takahashi, Atsushi Okuzawa
Appendiceal intussusception is a rare disease in which the appendix invaginates into the cecum. It is often caused by organic diseases. The present case involved an appendiceal intussusception without an organic disease, and laparoscopic resection of part of the cecum was performed. Appendiceal intussusception has various causes, including malignant diseases. Therefore, diagnosis and selection of operative method are complex and could potentially lead to an excessively invasive option. By performing SILS with a multiuse single-site port, we were able to provide an appropriate, non-invasive treatment that had a good esthetic outcome...
December 7, 2017: Asian Journal of Endoscopic Surgery
Mark Sadgrove, Masakazu Sugawara, Yasuyoshi Mitsumori, Keiichi Edamatsu
Two port optical devices couple light to either port dependent on the input photon state. An important class of two-port devices is that of evanescently-coupled interfaces where chirality of photon coupling can lead to important technological applications. Here, we perform a fundamental characterization of such an interface, reconstructing the two-port polarization response over the surface of the Poincaré sphere for an optical nanofibre. From this result, we derive a chirality measure which is universal, obeying a one parameter scaling law independent of the exact parameters of the nanofibre and wavelength of light...
December 6, 2017: Scientific Reports
Shinobu Yamamoto, Akiko Matsumoto, Yuko Yui, Shota Miyazaki, Shinji Kumagai, Hajime Hori, Masayoshi Ichiba
OBJECTIVES: N,N-Dimethylacetamide (DMAC) is widely used in industry as a solvent. It can be absorbed through human skin. Therefore, it is necessary to determine exposure to DMAC via biological monitoring. However, the precision of traditional gas chromatography (GC) is low due to the thermal decomposition of metabolites in the high-temperature GC injection port. To overcome this problem, we have developed a new method for the simultaneous separation and quantification of urinary DMAC metabolites using liquid chromatography-tandem mass spectrometry (LC-MS/MS)...
December 6, 2017: Journal of Occupational Health
Mitsuhiro Narita, Susumu Kageyama, Takatsugu Okegawa, Hidefumi Kinoshita, Fuminori Sato, Ken Nakagawa, Tomonori Habuchi, Akio Hoshi, Akio Matsubara, Koji Yoshimura, Toshiro Terachi, Hiromitsu Mimata, Akihiro Kawauchi
OBJECTIVES: To evaluate the current status of urological laparoendoscopic single-site and reduced port surgery in Japan. METHODS: Of the 152 institutions to which councilors of the Japanese Society of Endourology belong, 42 (28%) have carried out laparoendoscopic single-site and reduced port surgery. A total of 32 of these institutions agreed to participate in this survey. Patients who had undergone surgery between January 2008 and March 2014 were included in the present study...
December 6, 2017: International Journal of Urology: Official Journal of the Japanese Urological Association
Yun Peng, Bing Dai, Chun-Xiang Hu, Jia Su, Wei Tan, Hong-Wen Zhao, Jian Kang
BACKGROUND: Research on the effect of nebulizer location on aerosol delivery during noninvasive ventilation has reached inconsistent conclusions. OBJECTIVE: To investigate the effects of nebulizer position on aerosol delivery efficiency and ventilator performance during noninvasive ventilation. METHODS: The Active Servo Lung 5000 respiratory simulation system (ASL5000) was used to simulate a COPD patient. The noninvasive ventilator was set to the spontaneous breathing mode...
December 6, 2017: Respiration; International Review of Thoracic Diseases
Pengfei Ji, Yang Song, Tasha Drake, Samuel S Veroneau, Zekai Lin, Xiandao Pan, Wenbin Lin
Titania (TiO2) is widely used in the chemical industry as an efficacious catalyst support, benefiting from its unique strong metal-support interaction. Many proposals have been made to rationalize this effect at the macroscopic level, yet the under-lying molecular mechanism is not understood due to the presence of multiple catalytic species on TiO2 surface. This chal-lenge can be addressed with metal-organic frameworks featuring well-defined metal oxo/hydroxo clusters for supporting single-site catalysts. Herein we report that the Ti8(μ2-O)8(μ2-OH)4 node of the Ti-BDC MOF (MIL-125) provides a single-site model of the classical TiO2 support to enable CoII-hydride catalyzed arene hydrogenation...
December 6, 2017: Journal of the American Chemical Society
Paolo Maino, Sander M J van Kuijk, Roberto S G M Perez, Eva Koetsier
OBJECTIVES: The localization of the reservoir fill port of Intrathecal Drug Delivery Devices (IDDS) can be difficult. The purpose of this study was to assess the ease of fill port access during the ultrasound-guided refill technique compared to the blind refill technique in IDDSs with a raised septum on the pump surface. MATERIALS AND METHODS: Written informed consent was obtained from 19 adult patients undergoing regular refills of their Raised Septum IDDSs (RS-IDDSs)...
December 5, 2017: Neuromodulation: Journal of the International Neuromodulation Society
S Zabeti, M Fikri, C Schulz
Shock tubes allow for the study of ultra-fast gas-phase reactions on the microsecond time scale. Because the repetition rate of the experiments is low, it is crucial to gain as much information as possible from each individual measurement. While reaction-time-resolved species concentration and temperature measurements with fast absorption methods are established, conventional laser-induced fluorescence (LIF) measurements with pulsed lasers provide data only at a single reaction time. Therefore, fluorescence methods have rarely been used in shock-tube diagnostics...
November 2017: Review of Scientific Instruments
Nazmus Sakib, Na Li, Xiaoxia Zhu, Dianhe Li, Yiyi Li, Haofei Wang
BACKGROUND: In a previous meta-analysis-based modeling study, it was hypothesized that modern postoperative radiotherapy (PORT) may improve both local recurrence and overall survival (OS) in stage IIIA-N2 non-small-cell lung cancer (NSCLC). There were only four single-arm trials with a total of 357 patients. As other trials have provided new and controversial data, we performed this updated meta-analysis to test the hypothesis. PATIENTS AND METHODS: Systematic reviews in Medline, Cochrane, and Science Direct up to December 2015 identified publications exploring the efficacy of PORT in resectable stage IIIA-N2 NSCLC...
November 20, 2017: Nuclear Medicine Communications
Bernhard Schlevogt, Katja Deterding, Kerstin Port, Christoph Höner Zu Siederdissen, Lisa Sollik, Janina Kirschner, Carola Mix, Michael P Manns, Markus Cornberg, Heiner Wedemeyer
Background and aim The advent of direct-acting antivirals has revolutionized treatment of chronic hepatitis C with very high cure rates and excellent tolerability compared to interferon-based hepatitis C virus (HCV) treatment. However, long-term effects of interferon-free cure of HCV infection on the metabolic condition of patients have not been investigated so far. Methods We investigated weight development during and after antiviral treatment of hepatitis C. In a prospective single-center cohort study, interferon-free antiviral treatment was initiated in 284 patients...
September 2017: Zeitschrift Für Gastroenterologie
Jung Ho Park, Sang Woo Lim, Sung Eun Kim, Min Jung Kim, Hyoung-Chul Park
Colonic perforation during colonoscopy is a rare but lethal complication. Recently, it is usually managed with laparoscopic approach. Here we present our experience of single incision laparoscopic repair for sigmoid colon perforation during colonoscopy. A 57-year-old male patient presented with an acute sigmoid colon perforation event during diagnostic colonoscopy. Emergency operation was performed with transumbilical single incision laparoscopic exploration. The perforated site of sigmoid colon was primarily repaired with the curved endoscopic linear stapler...
November 2017: Annals of Surgical Treatment and Research
Yasmin Abu-Ghanem, Zohar Dotan, Jacob Ramon, Dorit E Zilberman
Retzius space sparing (RSS) during laparoscopic robot-assisted radical prostatectomy (RALP) has been offered as an approach that reduces perioperative complications and enables faster gaining of full urinary continence due to bladder anatomy preservation. Retro and transperitoneal techniques have been proposed, whereby RSS has been implemented. We sought to explore whether Retzius space reconstruction (RSR) following transperitoneal RALP will be an advantageous step as well. A prospective registry database of 102 consecutive transperitoneal RALP cases performed by a single surgeon was reviewed...
November 27, 2017: Journal of Robotic Surgery
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