Problems with Secure Control of SEMS Group

Author(s):  
Andrey E. Gorodetskiy ◽  
Irina L. Tarasova ◽  
A. Yu. Kuchmin
Keyword(s):  
2017 ◽  
Author(s):  
Jessica Litman

In this essay, written for the 30th Anniversary of Cardozo’s Arts and Entertainment Law Journal, I revisit the ruinous litigation strategy copyright owners pursued after Napster to secure control of the market for personal uses of copyrighted works, which I wrote about ten years ago in War Stories, 20 Cardozo Arts & Ent. L.J. 337 (2002). The litigation campaign had effects that copyright owners now have reason to regret. Medical experts tell us that powerful antibiotics are highly effective in killing off both good and bad bacteria, but at a significant risk. Bugs that survive the treatment grow bigger, stronger, and resistant to antibiotics. They become much more dangerous because they are harder to kill. Copyright owners’ indiscriminate litigation against new entrants into the entertainment and information marketplace killed off a broad swath of potential competitors and partners. The ones who were left faced a less crowded field because old media had helpfully cleared it for them. The scorched-earth litigation strategy temporarily cleared the field, and made room both for tepid, content-industry-controlled efforts to distribute music, books, and video online, and for new entrants with the stamina and resources to survive copyright infringement suits. Apple, Amazon, and Google took advantage of that environment to grow into dominant distributors who are obligatory partners for any serious online content distribution plan, and who insist on calling the shots on price, format, and other matters that content owners believe should rightfully be under their own control.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sang Hoon Lee ◽  
Yeon Suk Kim ◽  
Eui Joo Kim ◽  
Hee Seung Lee ◽  
Jeong Youp Park ◽  
...  

AbstractChronic pancreatitis (CP) related main pancreatic duct (MPD) stricture has been a challenge for endoscopists. Fully covered self-expandable metal stents (FC-SEMS) has been tried in CP patients, but the efficacy and safety are still controversial. Thus, we aim to compare the long-term clinical efficacy of FC-SEMS vs. plastic stent placement in persistent MPD strictures secondary to CP. Between 2007 and 2018, 80 chronic pancreatitis patients (58 males, median age 49 years), who underwent endoscopic placement of FC-SEMS (n = 26) and plastic stent (n = 54) for persistent MPD strictures after at least 3 months of initial single plastic stenting, were retrospectively analyzed during a median follow-up duration of 33.7 months. As a result, MPD stricture resolution rate was statistically higher in FC-SEMS group (87.0% vs. 42.0%, p < 0.001). Although immediate complications occurred similarly (38.5% vs. 37.0%, p = 0.902), spontaneous migration (26.9%) and de novo strictures (23.1%) were pronounced delayed complications in FC-SEMS group. Pain relief during follow-up was significantly higher in FC-SEMS group (76.9% vs. 53.7%, p = 0.046). The total procedure cost was similar in both groups ($1,455.6 vs. $1,596.9, p = 0.486). In comparison with plastic stent, FC-SEMS placement for persistent MPD strictures had favorable long-term clinical efficacy, with its typical complications like spontaneous migration and de novo strictures.


Author(s):  
Bhaskar Ramasubramanian ◽  
Luyao Niu ◽  
Andrew Clark ◽  
Linda Bushnell ◽  
Radha Poovendran

2021 ◽  
Vol 09 (06) ◽  
pp. E888-E894
Author(s):  
Nichol S. Martinez ◽  
Sumant Inamdar ◽  
Sheila N. Firoozan ◽  
Stephanie Izard ◽  
Calvin Lee ◽  
...  

Abstract Background and study aims There are conflicting data regarding the risk of post-ERCP pancreatitis (PEP) with self-expandable metallic stents (SEMS) compared to polyethylene stents (PS) in malignant biliary obstructions and limited data related to benign obstructions. Patients and methods A retrospective cohort study was performed of 1136 patients who underwent ERCP for biliary obstruction and received SEMS or PS at a tertiary-care medical center between January 2011 and October 2016. We evaluated the association between stent type (SEMS vs PS) and PEP in malignant and benign biliary obstructions. Results Among the 1136 patients included in our study, 399 had SEMS placed and 737 had PS placed. Patients with PS were more likely to have pancreatic duct cannulation, pancreatic duct stent placement, double guidewire technique, sphincterotomy and sphincteroplasty as compared to the SEMS group. On multivariate analysis, PEP rates were higher in the SEMS group (8.0 %) versus the PS group (4.8 %) (OR 2.27 [CI, 1.22, 4.24]) for all obstructions. For malignant obstructions, PEP rates were 7.8 % and 6.6 % for SEMS and plastic stents, respectively (OR 1.54 [CI, 0.72, 3.30]). For benign obstructions the PEP rate was higher in the SEMS group (8.8 %) compared to the PS group (4.2 %) (OR 3.67 [CI, 1.50, 8.97]). No significant differences between PEP severity were identified based on stent type when stratified based on benign and malignant. Conclusions PEP rates were higher when SEMS were used for benign obstruction as compared to PS. For malignant obstruction, no difference was identified in PEP rates with use of SEMS vs PS.


2015 ◽  
Vol 9 (6) ◽  
pp. 321-327 ◽  
Author(s):  
Jianghong Wei ◽  
Wenfen Liu ◽  
Xuexian Hu

Author(s):  
Chengwei Wu ◽  
Weiran Yao ◽  
Wei Pan ◽  
Guanghui Sun ◽  
Jianxing Liu ◽  
...  

2020 ◽  
pp. 169-181
Author(s):  
Magdi S Mahmoud

Sign in / Sign up

Export Citation Format

Share Document