bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extending the time of coherent optical response in ensemble of singly-charged InGaAs quantum dots
Authors: Kosarev Alexander N. , Trifonov Artur V. , Yugova Irina A. , Yanibekov Iskander I. , Poltavtsev Sergey V. , Kamenskii Alexander N. , Scholz Sven E. , Sgroi Carlo Alberto , Ludwig Arne , Wieck Andreas D. , Yakovlev Dmitri R. , Bayer Manfred , Akimov Ilya A. 
Published: June 2022

AbstractThe ability to extend the time scale of the coherent optical response from large ensembles of quantum emitters is highly appealing for applications in quantum information devices. In semiconductor nanostructures, spin degrees of freedom can be used as auxiliary, powerful tools to modify the coherent optical dynamics. Here, we apply this approach to negatively charged (In,Ga)As/GaAs self-assembled quantum dots which are considered as excellent quantum emitters with robust optical coherence and high bandwidth. We study three-pulse spin-dependent photon echoes subject to moderate transverse magnetic fields up to 1 T. We demonstrate that the timescale of coherent optical response can be extended by at least an order of magnitude by the field. Without magnetic field, the photon echo decays with T2 = 0.45 ns which is determined by the radiative lifetime of trions T1 = 0.26 ns. In the presence of the transverse magnetic field, the decay of the photon echo signal is given by spin dephasing time of the ensemble of resident electrons T2,e ∼ 4 ns. We demonstrate that the non-zero transverse g-factor of the heavy holes in the trion state plays a crucial role in the temporal evolution and magnetic field dependence of the long-lived photon echo signal.
GaiaData Release 3
Authors: Montegriffo P. , De Angeli F. , Andrae R. , Riello M. , Pancino E. , Sanna N. , Bellazzini M. , Evans D. W. , Carrasco J. M. , Sordo R. , Busso G. , Cacciari C. , Jordi C. , van Leeuwen F. , Vallenari A. , Altavilla G. , Barstow M. A. , Brown A. G. A. , Burgess P. W. , Castellani M. , Cowell S. , Davidson M. , De Luise F. , Delchambre L. , Diener C. , Fabricius C. , Frémat Y. , Fouesneau M. , Gilmore G. , Giuffrida G. , Hambly N. C. , Harrison D. L. , Hidalgo S. , Hodgkin S. T. , Holland G. , Marinoni S. , Osborne P. J. , Pagani C. , Palaversa L. , Piersimoni A. M. , Pulone L. , Ragaini S. , Rainer M. , Richards P. J. , Rowell N. , Ruz-Mieres D. , Sarro L. M. , Walton N. A. , Yoldas A. 
Published: June 2022

Context.GaiaData Release 3 contains astrometry and photometry results for about 1.8 billion sources based on observations collected by the European Space Agency (ESA)Gaiasatellite during the first 34 months of its operational phase (the same period covered byGaiaearly Data Release 3;GaiaEDR3). Low-resolution spectra for 220 million sources are one of the important new data products included in this release.Aims.In this paper, we focus on the external calibration of low-resolution spectroscopic content, describing the input data, algorithms, data processing, and the validation of the results. Particular attention is given to the quality of the data and to a number of features that users may need to take into account to make the best use of the catalogue.Methods.We calibrated an instrument model to relate meanGaiaspectra to the corresponding spectral energy distributions (SEDs) using an extended set of calibrators: this includes modelling of the instrument dispersion relation, transmission, and line spread functions. Optimisation of the model is achieved through total least-squares regression, accounting for errors inGaiaand external spectra.Results.The resulting instrument model can be used for forward modelling ofGaiaspectra or for inverse modelling of externally calibrated spectra in absolute flux units.Conclusions.The absolute calibration derived in this paper provides an essential ingredient for users ofBP/RPspectra. It allows users to connectBP/RPspectra to absolute fluxes and physical wavelengths.
Differentialtherapeutische Zugänge bei der prothetischen Versorgung von Fingergelenken
Authors: Labèr Raffael , Schindele Stephan Franz 
Published: June 2022

ZusammenfassungFortgeschrittene degenerative Veränderungen der Fingergelenke führen nicht selten zu chirurgischen Behandlungen unterschiedlicher Art. Dabei kommt neben der Arthrodese auch die bewegungserhaltende Therapie mittels eines Kunstgelenks in Frage. Hierfür kann der behandelnde Chirurg zwischen einer Vielzahl unterschiedlicher Zugänge wählen. Die verschiedenen Zugänge mit ihren charakteristischen intraoperativen Vor- und Nachteilen sowie für die postoperative Behandlung sollten patienten-, implantat- und nachbehandlungsspezifisch ausgewählt und angewendet werden. Im Folgenden wird eine Übersicht über die möglichen Zugänge sowie die damit einhergehenden Operationstechniken zum Fingergelenksersatz am Grund-, Mittel- und Endglied gegeben.
Clinical effectiveness of short course oral prednisone for stricture prevention after semi-circumferential esophageal endoscopic submucosal dissection
Authors: Arantes Vitor N. , Ramos Josué Aliaga , White Jonathan Richard , Parra-Blanco Adolfo 
Published: June 2022

Abstract
Background and study aims Esophageal strictures (ES) occur frequently after semi-circumferential endoscopic submucosal dissection (ESD) for the eradication of superficial esophageal neoplasms and negatively impact a patient’s quality of life. Oral corticosteroids have been shown to be clinically effective, but the most appropriate drug, dose and duration is yet to be determined. The aim of the study was to investigate the clinical effectiveness and safety of 30 mg prednisone with a shortened tapering schedule on ES after semi-circumferential ESD.
Patients and methods This was a retrospective observational study that analyzed consecutive patients with esophageal neoplasms who underwent semi-circumferential ESD with a resection defect greater than 75 % of the circumference that received a protocol of oral steroids for stricture prevention. On postoperative day 3, 30 mg prednisone was prescribed, tapering weekly to 20 mg/10 mg/5 mg over 4 weeks. Follow-up included clinic consultation and endoscopic review at weeks 2 and 4. Effectiveness outcomes included ES rates, safety, tolerability, resection, dilatation and recurrence rates.
Results Ninety ESD procedures were carried out during the specified time period and 18 patients met the inclusion criteria for the final analysis. The mean age was 61.5 years, lesion size was 52.5 mm, and final histology was squamous cell carcinoma in all patients. Incidence of intra-procedure complications was: bleeding 5.5 % (1/18) and ES 5.5 % (1/18), requiring a median two endoscopic dilatations. En bloc, R0 and curative resection rates were 88.8 %, 72.2 %, and 55.5 %, respectively.
Conclusions The short tapering schedule of 30 mg oral prednisone is clinically efficacious and safe for prevention of ES after semi-circumferential ESD in Latin American patients.
An international experience with single-operator cholangiopancreatoscopy in patients with altered anatomy
Authors: Mony Shruti , Ghandour Bachir , Raijman Isaac , Manvar Amar , Ho Sammy , Trindade Arvind J. , Benias Petros C. , Zulli Claudio , Jacques Jérémie , Ichkhanian Yervant , Zuchelli Tobias , Ghanimeh Mouhanna Abu , Irani Shayan , Canakis Andrew , Sanaei Omid , Szvarca Daniel , Zhang Linda , Bejjani Michael , Akshintala Venkata , Khashab Mouen A. 
Published: June 2022

Abstract
Background and study aims The utility of digital single- operator cholangiopancreatoscopy (D-SOCP) in surgically altered anatomy (SAA) is limited. We aimed to evaluate the technical success and safety of D-SOCP in patients SAA.
Patients and methods Patients with SAA who underwent D-SOCP between February 2015 and June 2020 were retrospectively evaluated. Technical success was defined as completing the intended procedure with the use of D-SOCP.
Results Thirty-five patients underwent D-SOCP (34 D-SOC, 1 D-SOP). Bilroth II was the most common type of SAA (45.7 %), followed by Whipple reconstruction (31.4 %). Twenty-three patients (65.7 %) patients had prior failed ERCP due to the presence of complex biliary stone (52.2 %). A therapeutic duodenoscope was utilized in the majority of the cases (68.6 %), while a therapeutic gastroscope (22.7 %) or adult colonoscope (8.5 %) were used in the remaining procedures. Choledocholithiasis (61.2 %) and pancreatic duct calculi (3.2 %) were the most common indications for D-SOCP. Technical success was achieved in all 35 patients (100 %) and majority (91.4 %) requiring a single session. Complex interventions included electrohydraulic or laser lithotripsy, biliary or pancreatic stent placement, stricture dilation, and target tissue biopsies. Two mild adverse events occurred (pancreatitis and transient bacteremia).
Conclusions In SAA, D-SOCP is a safe and effective modality to diagnose and treat complex pancreatobiliary disorders, especially in cases where standard ERCP attempts may fail.
Badge sign-in and report cards improve first case start times in gastrointestinal endoscopy: A prospective quality improvement study
Authors: Hiroshige Karina , Ferrer Alyssa , Chi Stephanie , Steineke Brittany , Hersch David , Goldbeck Jessica , Stiles Megan , Azeez Devina Adam , Tuzzolo Karen , Reisert Dolores , Fitzpatrick Maureen , Trindade Arvind J. 
Published: June 2022

Background and study aims First case start (FCS) time is often a key metric used to gauge efficiency in an endoscopy suite. There are limited data on tools and methods to improve the FCS time in the endoscopy suite.
Methods A prospective observational cohort study was conducted in an academic tertiary care endoscopy suite examining the effect of badge sign-in (Period 2) and badge sign-in coupled with report cards (Period 3) compared to an initial observational period (Period 1).
Results After the badge sign-in reader was introduced in P2, the unit experienced a mean time savings of 5 ± 18 minutes in FCS delays compared to P1 (P = .03). In P3, an 8 ± 17-minute time savings in FCS time delay was observed compared to P1 (P = 0.0006). Sign-in compliance significantly increased for the overall unit between P2 and P3 (49 % vs. 59 %, P = .002). Increases in first case on-time start (FCOTS) rates compared to P1 were observed for the unit, with a 14% absolute increase in P2 (P < .0001) and a 17 % absolute increase in P3 (P < .0001). FCS delays for on-time badge sign-ins were significantly lower compared to FCS delays for missed badge sign-ins and late badge sign-ins (P < .0001).
Conclusions The use of badge sign-in and report cards improve endoscopy unit efficiency as it can increase FCOTS rates and decrease FCS time delays.
Zugänge bei Operationen einer Dupuytren’schen Kontraktur
Authors: Kalb Karlheinz , Schnegg Jakob Richard , Dimitrova Polina 
Published: June 2022

ZusammenfassungDie Konzepte zur Behandlung der Dupuytrenschen Kontraktur differieren erheblich. Nichtsdestotrotz bleibt die partielle Aponeurektomie die operative Methode der Wahl bei fortgeschrittener Erkrankung. Ein wesentlicher Aspekt dieser Operation ist ein korrekter Zugangsweg. Unter Einbeziehung der Literatur erfolgt die Darstellung grundlegender Prinzipien, sowie des konkreten eigenen Vorgehens bei unterschiedlichen Ausgangsbefunden.Voraussetzung für eine korrekte Operationsplanung und damit einer adäquaten Schnittführung ist neben sorgfältiger Anamnese eine subtile Erfassung des individuellen Befundes. Relevante Parameter sind Befundausdehnung und Hautqualität. Anerkannte Basisinzisionen sind an den Fingern Längsinzisionen mit Auflösung durch Z-Plastiken und Zick-Zack-Inzisionen mit vielen Variationen. Bei ausgeprägterem Hautdefizit kommen Lappenplastiken zum Einsatz. In der Hohlhand bevorzugen wir einen ulnarseitig gestielten Lappen, alternativ eine Hohlhand-Z-Plastik. Befundabhängig sind Kombinationen notwendig. Entscheidend ist die Beachtung handchirurgischer Prinzipien, suffiziente Exposition des Situs, Ausnutzung verschieblicher Hautareale und die Beachtung der Vaskularisation resultierender Hautlappen.Bei komplexem Ausgangsbefund ist eine individualisierte Schnittführung unter Beachtung der handchirurgischen Grundprinzipien mit Ausgleich des antizipierten Hautdefizits ein wesentliches Element für den Erfolg des Eingriffes, wobei die konkrete Umsetzung bei erfahrenen Handchirurgen stark variieren kann.
Colorectal submucosa thickness in specimens obtained by EMR versus ESD: a retrospective pilot study
Authors: Clees Natalie , Várnai-Händel Alinda D. , Hildenbrand Ralf , Grund Karl-E. , Metter Klaus , Dumoulin Franz Ludwig 
Published: June 2022

AbstractAccurate histopathology is the mainstay for reliable classification of resected early colorectal cancer lesions in terms of potential risk of lymph node metastasis. In particular, thickness of resected submucosa is important in cases of submucosal invasive cancer. Nevertheless, little is known about the quality and thickness of submucosal tissue obtained using different endoscopic resection techniques. In this small pilot study, we performed morphometric analysis of submucosal thickness in specimens obtained from right-sided colorectal lesions using endoscopic mucosal resection (EMR) versus endoscopic submucosal resection (ESD). Comparative measurements showed significant differences in submucosal area ≥ 1000 μm and minimum submucosal thickness per tissue section analyzed (EMR vs. ESD: 91.2 % ± 6.6 vs. 47.1 % ± 10.6, P = 0.018; 933.7 µm ± 125.1 vs. 319.0 µm ± 123.6, P = 0.009). In contrast, no significant differences were observed in variation coefficient and mean maximum submucosal thickness. Thus, unexpectedly, in this small retrospective pilot study, specimens obtained using EMR had a better preserved submucosal layer than those obtained using ESD – possibly due to the different methods of specimen acquisition. The findings should be kept in mind when attempting to resect lesions suspicious for submucosal invasive cancer.
Differentialtherapeutische Herangehensweisen zur Behandlung des Karpaltunnelsyndroms
Authors: Harhaus Leila , Daeschler Simeon C. , Aman Martin , Böcker Arne Hendrik , Klimitz Felix , Bickert Berthold 
Published: June 2022

ZusammenfassungDas Karpaltunnelsyndrom (KTS) stellt die häufigste kompressionsbedingte Neuropathie dar. Die Therapieführung ist patientenindividuell zu gestalten. Die initiale konservative Therapie hat insbesondere im Anfangsstadium einen hohen Stellenwert. Die Indikation zur primären chirurgischen Therapie besteht bei therapierefraktären Situationen, ab mittelschweren Stadien oder bei Vorliegen relevanter Begleiterkrankungen (Raumforderungen, komplex regionalem Schmerzsyndrom, diabetische Polyneuropathie) und zunehmend auch beim KTS in der Schwangerschaft. Die unterschiedlichen Operationstechniken, deren differentialtherapeutische Anwendung, sowie deren Vor- und Nachteile sollen in dieser Arbeit pragmatisch dargestellt werden. Auch die herausfordernden Rezidivsituationen und -eingriffe werden hierbei herausgehoben. Vor dem Hintergrund der neu erschienenen aktualisierten S3-Leitlinie „Diagnostik- und Therapie des Karpaltunnelsyndroms“ hat dieser Themenbereich eine aktuelle Relevanz.
Differentialtherapeutische Zugänge zur Frakturversorgung an der Hand – Wann macht man was?
Authors: Pillukat Thomas , Mühldorfer-Fodor Marion , van Schoonhoven Jörg 
Published: June 2022

ZusammenfassungDie Behandlung von Fingerfrakturen ist in doppelter Hinsicht anspruchsvoll. Fehlstellungen und Inkongruenzen von Gelenken führen häufig zu ernsthaften funktionellen Einschränkungen und sollten daher nicht toleriert werden. Auf der anderen Seite wird der operative Zugang zur Fraktur häufig durch die unmittelbare Nähe wichtiger Funktionsgewebe wie Nerven, Gefäße, Bandapparat und Sehnen begrenzt. Der vorliegende Artikel enthält eine Auswahl von Behandlungsmöglichkeiten, die sich nach Auffassung der Autoren vor dem Hintergrund einer großen Klinik bewährt haben mit Hinweisen auf alternative Verfahren und das Vorgehen in besonderen Situationen ohne Anspruch auf Vollständigkeit.
Endoscopic Injections of Botulinum Toxin Type A in the Piglet Esophagus Is Safe and Feasible but Did Not Result in any Significant Structural Changes 3 Days after Injection
Authors: Rose Morten , Clarke Patrick , Pike Ashton H. , Zvara Peter , Schrøder Henrik D. , Hejboel Eva K. , Qvist Niels , Ellebæk Mark B. 
Published: June 2022

Abstract
Introduction Treatment for long-gap esophageal atresia (LGEA) aims at achieving primary anastomosis with minimal tension. Previous studies have shown that intramural injections with botulinum toxin type-A (BTX-A) from the adventitial side can increase the elongation of the piglet and rat esophagus before bursting, and that this effect is dose and time dependent. Our aim was to determine if endoscopic injections would be feasible, safe, and with an effect on the mechanical properties of the esophagus.
Methods Twenty-two male piglets (5.15 kg) were randomized into two groups, one receiving 2 units/kg BTX-A, the other equal volume 0.9% NaCl. On day 3, the esophagus was harvested and tested in a stretch-tension machine to evaluate elongation and maximum load, followed by histological examination.
Results No adverse effects to the procedure were observed. No statistically significant difference in elongation or maximum load before bursting between the treatment and placebo group was found. In histopathological analysis, inflammation and abscess formation were observed with no statistically significant difference between the two groups.
Conclusion Endoscopic placement of BTX-A injections in the piglet esophagus was safe and feasible but did not result in any difference in the mechanical properties or histology of the esophagus.
Should an Age Cutoff Be Considered for Elective Total Knee Arthroplasty Patients? An Analysis of Operative Success Based on Patient-Reported Outcomes
Authors: Bell Joshua A. , Emara Ahmed K. , Barsoum Wael K. , Bloomfield Michael , Briskin Isaac , Higuera Carlos , Klika Alison K. , Krebs Viktor E. , Mesko Nathan W. , Molloy Robert M. , Mont Michael A. , Murray Trevor G. , Muschler George F. , Nickodem Robert J. , Patel Preetesh D. , Schaffer Jonathan L. , Stearns Kim L. , Strnad Gregory J. , Piuzzi Nicolas S. 
Published: June 2022

AbstractTotal knee arthroplasty (TKA) is increasing in the elderly population; however, some patients, family members, and surgeons raise age-related concerns over expected improvement and risks. This study aimed to (1) evaluate the relationship between age and change in patient-reported outcome measures (PROMs); (2) model how many patients would be denied improvements in PROMs if hypothetical age cutoffs were implemented; and (3) assess length of stay (LOS), readmission, reoperation, and mortality per age group. A prospective cohort of 4,396 primary TKAs (August 2015–August 2018) was analyzed. One-year PROMs were evaluated via Knee injury and Osteoarthritis Outcome Score (KOOS)-pain, -physical function short form (-PS), and -quality of life (-QOL), as well as Veterans Rand-12 (VR-12) physical (-PCS) and mental component (-MCS) scores. Positive predictive values (PPVs) of the number of postoperative “failures” (i.e., unattained minimal clinically important difference in PROMs) relative to number of hypothetically denied “successes” from a theoretical age-group restriction was estimated. KOOS-PS and QOL median score improvements were equivalent among all age groups (p = 0.946 and p = 0.467, respectively). KOOS-pain improvement was equivalent for ≥80 and 60–69-year groups (44.4 [27.8–55.6]). Median VR-12 PCS improvements diminished as age increased (15.9, 14.8, and 13.4 for the 60–69, 70–79, and ≥80 groups, respectively; p = 0.002) while improvement in VR-12 MCS was similar among age groups (p = 0.440). PPV for failure was highest in the ≥80 group, yet remained <34% for all KOOS measures. Overall mortality was highest in the ≥80 group (2.14%, n = 9). LOS >2, non-home discharge, and 90-day readmission were highest in the ≥80 group (8.11% [n = 24], p < 0.001; 33.7% [n = 109], p < 0.001; and 34.4% [n = 111], p = 0.001, respectively). Elderly patients exhibited similar improvement in PROMs to younger counterparts despite higher LOS, non-home discharge, and 90-day readmission. Therefore, special care pathways should be implemented for those age groups.
Supine Knee Positioning Does Not Interfere with Mobile-Bearing Unicompartmental Knee Arthroplasty Performance
Authors: Bonano John C. , Barrett Andrew A. , Aggarwal Vinay K. , Chen Foster , Schirmers Joseph , Finlay Andrea K. , Arora Prerna , Amanatullah Derek F. 
Published: June 2022

AbstractThe Food and Drug Administration has only approved mobile-bearing unicompartmental knee arthroplasty (MB-UKA) to be performed with a hanging leg holder. The purpose of this study is to evaluate the impact of a supine knee position on MB-UKA performance.In total, 16 cadavers were randomized so that either the right or left knee was placed in the flexed or supine positions. One board-certified orthopaedic surgeon and three adult reconstruction fellows that attended the required Oxford partial knee instructional course performed four operations in each position. The primary outcome was final knee balance. Secondary outcomes included procedure duration, timing of individual surgical steps, implant sizes, range of motion, implant alignment, and fracture. A Students t-test was used to examine differences between positions with significance set at p < 0.05. Secondary analyses using two one-sided tests were conducted to explore equivalence between the two positions.There was no significant difference in mean final balance between supine (1.7 mm ± standard deviation [SD] = 1.5 mm) and flexed (1.3 ± 1.3 mm) positions (p = 0.390). There were also no significant differences between positions for procedure time (p = 0.497), tibia coronal alignment (p = 0.614), tibial slope (p = 0.194), femoral component sagittal alignment (p = 0.091), and fractures (n = 0). Exploratory equivalence analyses indicated that the positions were equivalent for final balance (p = 0.002).MB-UKA performed in the supine position is not significantly different from the flexed position in terms of ligament balance, overall procedure time, and radiographic appearance. These initial safety data warrant further clinical investigations and support the expansion of the surgical technique to include performing MB-UKAs in the supine position.
Laparoscopic versus Open Reduction of Intussusception in Infants and Children: A Systematic Review and Meta-analysis
Authors: Wu Peng , Huang Ping , Fu Yijia , Lv Yaxin , Feng Shaoguang , Lou Yi 
Published: June 2022

AbstractWe conducted a systematic review and meta-analysis to compare the efficacy and safety between laparoscopic reduction (LR) and open reduction (OR) of intussusception in infants and children. Literature searches were conducted to identify studies having compared LR and OR for children with intussusception failed to enema reduction. Parameters such as operative time, time to oral intake, length of hospital stay, overall postoperative complications, and recurrence were pooled and compared by meta-analysis. Among the 502 pediatric participants included in the 11 studies, 275 had received LR and 227 received OR. There were shorter length of hospital stays and time to oral intake with the LR approach compared with OR. However, no significant difference was found between LR and OR in the secondary outcome, such as the overall postoperative complications and recurrence. LR is a feasible, safe, and effective surgical procedure alternative to OR for pediatric intussusception. Compared with OR, LR has the advantage of shorter hospital stay and faster time to oral intake. Besides, the overall postoperative complications may be slightly lower in LR. We conclude that LR should be considered an acceptable option for children.