Search results for "placement"
showing 10 items of 1142 documents
Single use instruments for total knee arthroplasty
2021
Aim Total knee arthroplasty represents a procedure that is successfully performed to relieve functional limitation and pain in advanced stages of osteoarthritis. In the next 20 years the number of these procedures will be increased about four times. Patient specific instrumentation (PSI) has been introduced in the past years. The aim of this study was to evaluate whether SUI are more useful in clinical, organizational and economic terms. Methods A database search about single use instrumentation (SUI) was conducted on PubMed and Google Scholar for the period 2010-2020 using the following key “total knee replacement”, “total knee arthroplasty”, “single use instruments”, and “disposable instr…
Oxidative C-N fusion of pyridinyl-substituted porphyrins.
2018
International audience; The mild (electro) chemical oxidation of pyridin-2-ylthio-meso substituted Ni(II) porphyrins affords C-N fused cationic and dicationic pyridinium-based derivatives. These porphyrins are fully characterized and the molecular structure of one of them was confirmed by X-ray crystallography. A mechanism for the intramolecular oxidative C-N coupling is proposed based on theoretical calculations and cyclic voltammetry analyses.
A composite study on the structure and formation of ozone miniholes and minihighs over central Europe
2005
[1] Two different mechanisms have been proposed to be important for the formation of extreme total ozone events in mid-latitudes, so-called miniholes: (A) far-range meridional transport of air masses from regions with different climatological ozone mixing ratios, and (B) (local) adiabatic vertical displacement of isentropes. Here, the relative importance of these two mechanisms is studied using two different ozone profile reconstruction techniques for all miniholes and minihighs (events with anomalously high ozone) during the time period 1980–1989 over Switzerland. Composites for the two types of events of their vertical potential vorticity (PV) reveal a vertical dipole structure of PV anom…
La durabilité du périurbain dépendant de l'automobile au regard des pratiques d'achat en ligne des ménages
2014
ASRDLF2014 - 51ème colloque de l'Association de Science Régionale de Langue Française : Métropolisation, cohésion et performances : quels futurs pour nos territoires ?, CHAMPS-SUR-MARNE, FRANCE, 07-/07/2014 - 09/07/2014; International audience; La dépendance automobile des territoires périurbains liée à une absence de commerces et de services pose la question de leur soutenabilité, voire de leur durabilité à l'aube probable d'une augmentation importante et continue des prix des carburants. Internet et plus particulièrement la vente en ligne sont en mesure de fournir une alternative propice au maintien des ménages dans ces territoires. En effet, grâce au e-commerce, les ménages n'auraient pl…
The perioperative management of small animals with previously implanted pacemakers undergoing anaesthesia.
2020
Abstract Objective There is little information in the veterinary literature about the perioperative management of small animal patients with previously implanted pacemakers undergoing elective or emergency non-cardiac procedures. The purpose of this article is to review the current literature with regard to human patients, with previously implanted pacemakers, undergoing general anaesthesia. Using this and the current information on pacemakers and anaesthesia in dogs and cats, we provide recommendations for small animal patients in this situation. Databases used Google Scholar, PubMed and CAB Abstracts using and interlinking and narrowing the search terms: “dog”, “cat”, “small animals”, “an…
Active-fixation coronary sinus pacing lead extraction: A hybrid approach
2012
Cardiac resynchronization therapy (CRT) can be considered as the standard treatment for patients suffering from heart failure (NYHA III–IV), severely reduced left ventricular (LV) function, and wide QRS complexes. Over the past years, the lead systems used to stimulate the left ventricle have evolved technically from epicardial approaches to a transvenous access accompanied by a significant reduction of procedure-related complication rates [1]. However, even today, LV dislodgement rates ranging 5–10% and the instability of thresholds over time remain the greatest challenges with transvenous LV leads in CRT. Therefore, a special LV lead utilizing active fixation (the Attain StarFix® active f…
IL LAVORO DEI GIOVANI AI TEMPI DELLA PANDEMIA
2021
Il presente lavoro evidenzia i principali risultati di una ricerca realizzata nel periodo della quarantena generalizzata da marzo a maggio del 2020, dovuta alla pandemia di Covid-19, muovendo dal presupposto che essa non è soltanto un’emergenza sanitaria, ma costituisce anche una grave crisi economica e del mercato del lavoro che ha già avuto e avrà un enorme impatto sulle persone su scala mondiale.
Boundary-layer effects in wedges of piezoelectric laminates
2005
An approach to investigate boundary-layer effects in wedges of piezoelectric laminated structures is presented with the aim of ascertaining the electromechanical response characteristics. The wedge layer behavior is described in terms of generalized stress functions, which lead to a model consisting of a set of three coupled partial differential equations. The strength of the solution singularity is determined by solving the eigenvalue problem associated with the resolving system. The solution of the model is obtained by an eigenfunction expansion method coupled with a boundary collocation technique. Correspondingly, the singularity amplitude is assessed by introducing and calculating the g…
743 Lysosomal Storage Disorders in Non-Immunological Hydrops Fetalis - More Common than Assumed?
2012
Background Although non immunological hydrops fetalis (NIHF) is a very rare disorder, the disturbance accounts for a disproportionate share (3%) of overall mortality in the perinatal period. Lysosomal storage disorders (LSD) are only exceptionally considered to be the cause of NIHF. The reported incidence is about 1%. On the other hand, in about 18% of all cases, NIHF is classified as idiopathic. Patients and methods We report four cases of transient NIHF due to LSD and reviewed the literature for LSD associated with NIHF. Results At present, 12 different LSD are described to be associated with NIHF. The majority of reported patients already had a family history of NIHF, which had not been …