Publications by authors named "A Moreo"
Motivated by the recently reported signatures of superconductivity in trilayer La_{4}Ni_{3}O_{10} under pressure, we comprehensively study this system using ab initio and random-phase approximation techniques. Without electronic interactions, the Ni d_{3z^{2}-r^{2}} orbitals show a bonding-antibonding and nonbonding splitting behavior via the O p_{z} orbitals inducing a "trimer" lattice in La_{4}Ni_{3}O_{10}, analogous to the dimers of La_{3}Ni_{2}O_{7}. The Fermi surface consists of three electron sheets with mixed e_{g} orbitals, and a hole and an electron pocket made up of the d_{3z^{2}-r^{2}} orbital, suggesting a Ni two-orbital minimum model.
View Article and Find Full Text PDFObjective: Concerns exist about the possible detrimental effects of exercise training on aortic size and valve function in individuals with bicuspid aortic valve (BAV). This multicentre international study aimed to determine the characteristics of aortic size and valve function in athletes versus non-athletes with BAV and athletes with tricuspid aortic valve (TAV).
Methods: We enrolled competitive athletes with BAV and age- and sex-matched athletes with TAV and non-athletes with BAV.
Article Synopsis
- * Exercise pulmonary hypertension (PH) can be identified through exercise stress echocardiography (ESE) and is significant in predicting symptoms and mortality in HVD patients.
- * This review seeks to summarize the prognostic importance of exercise PH in valvular diseases and explore its potential integration into the diagnostic and treatment protocols for HVD.*
Determinants of invasive left atrial pressure in patients with atrial fibrillation.
Eur Heart J Cardiovasc Imaging
October 2024
Article Synopsis
- - This study aims to determine how cardiac structure and function relate to mean left atrial pressure (LAP) in patients with atrial fibrillation (AF), as estimating left ventricular filling pressures can be difficult in these cases.
- - Researchers included 101 patients undergoing transcatheter ablation, measuring invasive LAP during the procedure and echocardiography beforehand; they found that those with increased LAP had lower global longitudinal strain and poorer right ventricular function.
- - Key predictors for elevated LAP included higher E/e' ratio and lower peak atrial longitudinal strain, with the minimum left atrial volume index being the best indicator; these findings offer insight into assessing cardiac filling pressures in AF patients.
Article Synopsis
- This study investigates the effectiveness of HFPEF and HFA-PEFF scores in diagnosing heart failure with preserved ejection fraction (HFpEF) in patients with atrial fibrillation (AF), with a focus on their association with invasive left atrial pressure (LAP).
- Researchers found that while higher scores indicated worse cardiac function, they did not show a significant link to elevated mean LAP.
- Adding the measurement of left atrial indexed minimal volume (LAVi min) to these scores improved their accuracy in detecting elevated filling pressure in the studied patients.