The direct mechanism of dissociative recombination of HF + is studied using both time-dependent and time-independent methods, where the dynamics on 30 resonant states is explored. The relevant electronic states are calculated ab initio by combining electron scattering calculations with multireference configuration interaction structure calculations. For collision energies between 0.04 and 10 eV, we obtain qualitative agreement with experiment. At 1.9 eV there is a sharp threshold in both the experimental and theoretical cross sections that can be explained by the opening of new asymptotic limits. The measured cross section below 0.04 eV is not reproduced due to the neglect of the electronic couplings between the neutral states. We examine the validity of the local approximation for treating autoionization from the resonant states included in this study.
Compared with IABP, the pVAD is a cost-effective intervention for high-risk PCI patients, with ICERs well-below the conventional cost-effectiveness threshold.
The cross section for resonant ion-pair formation in the collision of low-energy electrons with HF + is calculated by the solution of the time-dependent Schrödinger equation with multiple coupled states using a wave packet method. A diabatization procedure is proposed to obtain the electronic couplings between quasidiabatic potentials of 1 Σ + symmetry for HF. By including these couplings between the neutral states, the cross section for ion-pair formation increases with about two orders of magnitude compared with the cross section for direct dissociation. Qualitative agreement with the measured cross section is obtained. The oscillations in the calculated cross section are analyzed. The cross section for ion-pair formation in electron recombination with DF + is calculated to determine the effect of isotopic substitution.
Background and study aims The aims of this study was to document the clinical and training relevance of endoscopic retrograde cholangiopancreaticography (ERCP) teleguidance (as a clinical model for applied telemedicine) with health economic modeling methodologies.
Methods Probabilities and consequences of complications after ERCP performed by either a novice-trainee or supported through teleguidance (TM) by an expert formed the basis of the health economic model.
Results The main clinical and economic outcomes originated from the base case scenario representing a low-volume center. In the cohort the patient age was 62 years, 58 % were females, the expert was doing ≥ 250 ERCPs per year and 50 for the novice-trainee. The expert knowledge transferred was set to 50 % and the average complexity grade to 1.98. Given a willingness to pay threshold of 56,180 USD/ quality-adjusted life years (QALY), the probability of cost-effectiveness of TM assistance was 98.9 %. The probability of a QALY gain for patients having an ERCP, to which was added TM, was 91.6 %. Adding TM saved on an average 111.2 USD (95 % CI 959 to 1021 SEK) per patient, and remained cost-effective basically insensitive to the level of willingness to pay.
Conclusion Teleguidance during an ERCP procedure has the potential to be the prefered option in many low- to medium-volume hospitals. The main mechanisms behind these effects are positive impact on several adverse patient outcomes, QALY increase, and decreased costs. TM should be considered for integration into future teaching curriculums in advanced upper gastrointestinal endoscopy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.