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Jae Yong Jeong, Jong Chan Kim, Dong Hyuk Kang, Joo Yong Lee
PURPOSE: To investigate 100 consecutive cases of videoscopic retrograde intrarenal surgery (RIRS) by a single surgeon and to evaluate factors associated with stone-free status and the learning curve thereof. MATERIALS AND METHODS: We analyzed the results of videoscopic RIRS in 100 patients who underwent primary treatment for renal stones from January 2015 to August 2016. Videoscopic RIRS were performed with URF-V and URF-V2 flexible video uteroscopes (Olympus) or a Flex-Xc flexible ureterorenoscope (KARL STORZ)...
March 2018: Yonsei Medical Journal
Dongwon Seo, Doo Ho Lee, Nuri Choi, Pita Sudrajad, Seung-Hwan Lee, Jun-Heon Lee
The development of genetic markers for animal breeding is an effective strategy to reduce the time and cost required to improve economically important traits. To implement genomic selection in the multibreed chicken population of Korea, an understanding of the linkage disequilibrium (LD) status of the target population is essential. In this study, we performed population genetic analyses to investigate LD decay, the effective population size, and breed diversity using 600K high-density single nucleotide polymorphism genotypes of 189 native chickens in 14 lines (including Korean native chicken, imported and adapted purebred and commercial chickens)...
2018: PloS One
Kandarp Priyakant Parikh, Ravi Jineshkumar Jain, Aditya Parikh Kandarp
Introduction: Success of any modality for stone disease needs to be evaluated in terms of Stone Free Rates (SFR), auxiliary procedures needed; complications and follow up. SFR in RIRS is subject to parameters like stone burden, location, number, hardness, composition; calyceal and ureter anatomy; use of ureteric access sheath (UAS); surgeon experience etc. Methods: The aim of this study is to evaluate the efficacy and safety of RIRS for managing upper tract stones...
January 2018: Urology Annals
Kyo Chul Koo, Jun-Ho Yoon, No-Cheol Park, Hye Sun Lee, Hyun Kyu Ahn, Kwang Suk Lee, Do Kyung Kim, Kang Su Cho, Byung Ha Chung, Chang Hee Hong
PURPOSE: Excessive bulking force during primary access of the ureteral access sheath (UAS) may induce ureteral injury. To investigate the efficacy of preoperative α-blockade for reducing UAS insertion forces (UASIF) and to determine the upper limit required to avoid ureteral injury. MATERIALS AND METHODS: In a randomized controlled trial, 135 patients from a single institution, who had ureteropelvic junction or renal pelvis stones and were planned to undergo retrograde intrarenal surgery (RIRS), were prospectively enrolled from December 2015 to January 2017...
February 1, 2018: Journal of Urology
Rida Al Osman, Christian Giguère, Hilmi R Dajani
BACKGROUND: Room reverberation alters the acoustical properties of the speech signals reaching our ears, affecting speech understanding. Therefore, it is important to understand the consequences of reverberation on auditory processing. In perceptual studies, the direct sound and early reflections of reverberated speech have been found to constitute useful energy, whereas the late reflections constitute detrimental energy. PURPOSE: This study investigated how various components (direct sound versus early reflections versus late reflections) of the reverberated speech are encoded in the auditory system using the speech-evoked auditory brainstem response (ABR)...
February 2018: Journal of the American Academy of Audiology
Aiping Zhang, Jianbin Li, Heng Qiu, Wei Wang, Yanluan Guo
BACKGROUND: The aim of this study was to compare the geometric differences in gross tumor volume (GTV) and surgical clips propagated by rigid image registration (RIR) and deformable image registration (DIR) using a four-dimensional computed tomography (4DCT) image data set for patients treated with boost irradiation or accelerated partial breast irradiation after breast-conserving surgery (BCS). METHODS: The 4DCT data sets of 44 patients who had undergone BCS were acquired...
December 2017: Medicine (Baltimore)
Søren Kissow Lildal, Kim Hovgaard Andreassen, Helene Jung, Malene Roland Pedersen, Palle Jörn Sloth Osther
OBJECTIVE: The aim of this study was to evaluate the incidence of ureteral lesions in retrograde intrarenal surgery (RIRS) with and without the use of a 10/12 Fr ureteral access sheath (UAS). A further objective was to search for preoperative factors that could influence the risk of ureteral damage. MATERIALS AND METHODS: Data were collected from a clinical database on 180 consecutive adult patients undergoing RIRS for kidney stones with or without a 10/12 Fr UAS...
February 1, 2018: Scandinavian Journal of Urology
Liang Huang, Yong Lin, Zhengyan Tang, Dongjie Lie, Zhao Wang, Hequn Chen, Guilin Wang
The aim of the present study was to summarize the management of upper urinary tract calculi in crossed fused renal ectopia (CFRE). Two patients were retrospectively studied in Xiangya Hospital (Changsha, China) and all relevant literature published in English between 1996 and 2016 was reviewed. All patients, including those reported in the literature, were characterized by age, sex, manifestation, therapy history, ectopic side, stone location, surgery and outcome. The patients had a mean age of 42.3±18.5 years, a male: Female ratio of 5:4 and the ratio of renal ectopic side was 9:8 (left:right)...
January 2018: Experimental and Therapeutic Medicine
Simon Hein, Dominik Stefan Schoeb, Ingo Grunwald, Katharina Richter, Jörg Haberstroh, Maximilian Seidl, Peter Bronsert, Ulrich Wetterauer, Martin Schoenthaler, Arkadiusz Miernik
PURPOSE: To evaluate the viability and biocompatibility of a novel, patented bioadhesive system for intrarenal embedding and retrieval of residual fragments after endoscopic lithotripsy. Complete stone clearance via active removal of residual fragments (RF) after intracorporeal laser lithotripsy may be time-consuming and fail in many cases. Therefore, the novel adhesive has been developed and evaluated for the first time in an in vivo pig model in the present work. METHODS: Four female domestic pigs underwent flexible ureteroscopy (RIRS) or percutaneous nephrolithotomy (PNL) under general anesthesia (8 kidneys, 4 × RIRS, 4 × PNL) evaluating the bioadhesive system...
January 24, 2018: World Journal of Urology
Yiwen Chen, Tuo Deng, Xiaolu Duan, Wei Zhu, Guohua Zeng
The objective of this study is to compare the efficacy and safety of the percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) in surgical treatment of pediatric patients with upper urinary stones based on the published literature. A comprehensive literature search of Pubmed, Embase, Cochrane Library and CNKI was conducted to identify studies comparing outcomes of PCNL and RIRS for treating pediatric patients with upper urinary stones before May 2017. A total of 11 studies, including one randomized controlled trial, four retrospective case-control studies and six case series studies, containing 822 children with upper urinary stones were included in this systematic review...
January 24, 2018: Urolithiasis
N Venkatramaiah, G Dinesh Kumar, Yogesh Chandrasekaran, Ramesh Ganduri, Satish Patil
A new class of donor-bridge-acceptor (D-π-A) π-conjugated light-emitting molecules comprising carbazole as donor and maleimide (Cbz-MI, Cbz-MI(d)), phthalimide (Cbz-Pth) as acceptor units with phenyl ring as spacer have been synthesized in good yields. These compounds exhibit high quantum yield with three distinct emission colors yellowish-green (Cbz-MI), bright yellow Cbz-MI(d), and sky blue (Cbz-Pth) in the solid state. Single-crystal X-ray and quantum chemical calculations reveals that twisting of the phenyl rings with high torsional angle on maleimide and phthalimide units reduce the effective inter-chromophore electronic coupling, furnish dramatic changes in their photophysical properties in solution and solid states...
January 16, 2018: ACS Applied Materials & Interfaces
Shanshan Xie, Xukai Yang, Dehe Wang, Feng Zhu, Ning Yang, Zhuocheng Hou, Zhonghua Ning
Selection for cold tolerance in chickens is important for improving production performance and animal welfare. The identification of chicken breeds with higher cold tolerance and production performance will help to target candidates for the selection. The thyroid gland plays important roles in thermal adaptation, and its function is influenced by breed differences and transcriptional plasticity, both of which remain largely unknown in the chicken thyroid transcriptome. In this study, we subjected Bashang Long-tail (BS) and Rhode Island Red (RIR) chickens to either cold or warm environments for 21 weeks and investigated egg production performance, body weight changes, serum thyroid hormone concentrations, and thyroid gland transcriptome profiles...
2018: PloS One
Hyung Suk Kim, Sangjun Yoo, Sung Yong Cho
OBJECTIVE: To assess the clinical efficacy of dual-lumen catheter technique in retrograde intrarenal surgery (RIRS) in terms of stone-free rate. METHODS: The data of 172 patients who underwent RIRS for renal stones between 2010 and 2017 were retrospectively reviewed. Patients were classified into two groups depending on whether dual-lumen catheter technique was used (group 1, n=25) or not (group 2, n=147) during RIRS. In turn, all patients of group 1 were compared to those of group 2 using propensity score analysis methods...
January 9, 2018: Journal of Endourology
C Giordano, G Marcello, L Barbattini, R Gobbi
The data analysed came from 545 patients and were related to five types of procedures performed in the urology operating room: percutaneous nephrolithotomy (PCNL), retrograde intrarenal surgery (RIRS), ureteropyeloscopy (UPS), ureteral catheterisation and nephrostomy. Local reference levels (75th percentiles) were determined for the various procedures. The peak entrance skin dose for a patient 20 cm thick was highest for PCNL, being 82 mGy, followed by 43 mGy for nephrostomy, 23 mGy for RIRS, 23 mGy for UPS and 17 mGy for stenting...
January 5, 2018: Radiation Protection Dosimetry
C-S Chang, R Shih, J-M Hwang, K-S Chuang
INTRODUCTION: The regular functions of CT-MRI registration include delineation of targets and organs-at-risk (OARs) in radiosurgery planning. The question of whether deformable image registration (DIR) could be applied to stereotactic radiosurgery (SRS) in its place remains a subject of debate. METHODS: This study collected data regarding 16 patients who had undergone single-fraction SRS treatment. All lesions were located close to the brainstem. CT and MRI two image sets were registered by both rigid image registration (RIR) and DIR algorithms...
February 2018: Radiography
Z Zhao, G H Shen, Y H Li, K Zhou, H W Cai
The radioactive iodine-refractory differentiated thyroid carcinoma (RIR-DTC) is a complex process that involves multiple genetic changes and multiple signaling pathways.Radionuclide imaging, genomics and proteomics are effective to clarify the mechanism and helpful in clinical diagnosis and therapy.The treatment of RIR-DTC includes the removal of distant metastases, drug therapy, external radiotherapy and radiofrequency ablation.This review mainly focuses on the pathogenesis, diagnosis and treatment of RIR-DTC...
December 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Sung Ku Kang, Kang Su Cho, Dong Hyuk Kang, Hae Do Jung, Jong Kyou Kwon, Joo Yong Lee
BACKGROUND: We performed a systematic review and meta-analysis comparing stone-free rates between retrograde intrarenal surgery (RIRS) and percutaneous nephrolithotomy (PCNL), using updated, more reliable evidence. MATERIALS AND METHODS: Randomized controlled trials comparing RIRS and PCNL for >2 cm stones were identified from electronic databases. Stone-free rates for the procedures were compared by qualitative and quantitative syntheses (meta-analyses). Outcome variables are shown as risk ratios (RRs) with 95% confidence intervals (CIs)...
December 2017: Medicine (Baltimore)
Mustafa Kirac, Giray Ergin, Burak Kopru, Yusuf Kibar, Hasan Biri
OBJECTIVES: In the pediatric population, there have been significant improvements in the treatment of stones in recent years. Conventionally, ureteroscopy (URS) and/or retrograde intrarenal surgery (RIRS) are techniques performed with fluoroscopy. When using fluoroscopy, problems, including malignancy, may arise due to radiation exposure in the patient, physician and operation room staff. The aim of this study is to evaluate the possibility of ureteroscopic treatment without fluoroscopy in children with ureteral and renal stones...
December 14, 2017: Journal of Endourology
Xiaolei Shi, Yonghan Peng, Xiao Li, Qi Wang, Ling Li, Min Liu, Xiaofeng Gao, Yinghao Sun
PURPOSES: To evaluate the clinical efficacy, safety, and cost of retrograde intrarenal surgery (RIRS) and percutaneous nephrolithotomy (PCNL) in the treatment for large renal stones in patients with a solitary kidney. PATIENTS AND METHODS: In this study, 117 patients with a solitary kidney who had undergone PCNL or RIRS for renal stones larger than 2 cm between January 2010 and December 2016 were retrospectively evaluated. The patients' demographic data, clinical characteristics, and perioperative outcomes were collected through a review of their medical records...
December 6, 2017: Journal of Endourology
James Steele, Andreas Endres, James Fisher, Paulo Gentil, Jürgen Giessing
'Repetitions in Reserve' (RIR) scales in resistance training (RT) are used to control effort but assume people accurately predict performance a priori (i.e. the number of possible repetitions to momentary failure (MF)). This study examined the ability of trainees with different experience levels to predict number of repetitions to MF. One hundred and forty-one participants underwent a full body RT session involving single sets to MF and were asked to predict the number of repetitions they could complete before reaching MF on each exercise...
2017: PeerJ
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