Search results for "time factor"
showing 10 items of 3219 documents
Stereoselective drug distribution and anticoagulant potency of the enantiomers of phenprocoumon in rats
1977
Abstract The elimination, distribution and anticoagulant activity of S(—)-, R(+)-, and R,S(±)-phenprocoumon were determined in male Wistar-Lewis rats after intravenous injection of a single dose of 0·6 mg kg−1. From the plasma concentrations which elicited the same anticoagulant effect, S(—)-phenprocoumon was 4 to 5 times more potent than R(+)-phenprocoumon. The potency of the racemate was between those of the enantiomers. The mean biologic half-life of the S(—)-enantiomer was shorter (12·5 h) than that of R(+)-phenprocoumon (17·8 h). No differences were observed in the apparent volume of distribution. However, the mean liver: plasma concentration ratio was higher for the S(—)-(6·9) than fo…
Survival benefit from recent changes in management of men and women with ST-segment elevation myocardial infarction treated with percutaneous coronar…
2019
Background: Nowadays, the majority of patients with myocardial infarction with ST-segment elevation (STEMI) are treated with primary percutaneous coronary interventions (PCI). In recent years, there have been ongoing improvements in PCI techniques, devices and concomitant pharmacotherapy. However, reports on further mortality reduction among PCI-treated STEMI patients remain inconclusive. The aim of this study was to compare changes in management and mortality in PCI-treated STEMI patients between 2005 and 2011 in a real-life setting. Methods: Data on 79,522 PCI-treated patients with STEMI from Polish Registry of Acute Coronary Syndromes (PL-ACS) admitted to Polish hospitals between 2005 an…
High-Grade T1 on Re-Transurethral Resection after Initial High-Grade T1 Confers Worse Oncological Outcomes: Results of a Multi-Institutional Study
2018
The aim of this multicenter study was to investigate the prognostic impact of residual T1 high-grade (HG)/G3 tumors at re-transurethral resection (TUR of bladder tumor) in a large multi-institutional cohort of patients with primary T1 HG/G3 bladder cancer (BC).
Cranioplasty with autologous bone flaps cryopreserved with Dimethylsulphoxide : does tissue processing matter
2021
Este artículo se encuentra disponible en la siguiente URL: https://www.sciencedirect.com/science/article/abs/pii/S1878875021001625?via%3Dihub En este artículo de investigación también participan: Dolores Ocete, Lucas Aranda, Ana Melero, Antonio J. Guillot, Nuria Yagüe y Carlos Botella. Este es el pre-print del siguiente artículo: Mirabet, V., García, D., Roca, A., Quiroz, A. R., Antón, J., Rodríguez-Cadarso, M., Ocete, D., Aranda, L., Melero, A., Guillot, A. J., Yagüe, N., Guillén, I. & Botella, C. (2021). Cranioplasty with autologous bone flaps cryopreserved with Dimethylsulphoxide: does tissue processing matter. World Neurosurgery, vol. 149 (may.), pp. e582?e591, que se ha publicado de fo…
Time-dependent contribution of non neuronal cells to BDNF production after ischemic stroke in rats.
2010
International audience; Although brain-derived neurotrophic factor (BDNF) plays a central role in recovery after cerebral ischemia, little is known about cells involved in BDNF production after stroke. The present study testes the hypothesis that neurons are not the unique source of neosynthesized BDNF after stroke and that non neuronal-BDNF producing cells differ according to the delay after stroke induction. For this purpose, cellular localization of BDNF and BDNF content of each hemisphere were analysed in parallel before and after (4h, 24h and 8d) ischemic stroke in rats. Stroke of different severities was induced by embolization of the brain with variable number of calibrated microsphe…
Efficacy and one-year outcomes of Luminor® paclitaxel-coated drug-eluting balloon in the treatment of popliteal artery atherosclerosis lesions
2021
Purpose: Reporting outcomes with a new generation paclitaxel eluting balloon (Luminor®; iVascular, Vascular, S.L.U., Barcelona, Spain) in the popliteal district. Endovascular treatment of popliteal artery atherosclerotic disease is still debated without definitive evidences. Methods: From January to June 2019, patients’ data presenting popliteal artery atherosclerotic diseases and treated with the Luminor® (iVascular) drug eluting balloon (DEB) were prospectively collected. Critical limb ischemia (CLI) or severe claudication associated with popliteal artery stenosis >50% were the inclusion criteria. Measured outcomes were technical success, early and late results; including mortality, mo…
Single-centre experience and preliminary Results of intravascular ultrasound in endovascular aneurysm repair
2019
Background Intravascular ultrasound (IVUS) has been introduced as diagnostic adjunct to provide new insights into the diagnosis and therapy of vascular disease. Herein, we compared the outcomes of conventional endovascular aneurysm repair (EVAR) and EVAR with IVUS in patients presenting with infrarenal abdominal aortic aneurysm using a propensity-matched cohort. Methods From May 2013 to August 2017, 221 patients were retrospectively analyzed. Of that, 122 patients were eligible for inclusion and underwent propensity score matching. Perioperative mortality and morbidity, renal function impairment, endoleak incidence, mean contrast medium usage, operative time, radiation exposure (including f…
Sex differences in mortality in stable patients undergoing vasodilator stress cardiovascular magnetic resonance
2021
Abstract Introduction The prognostic value and therapeutic implications of ischemia as derived from vasodilator stress cardiovascular magnetic resonance (CMR) could differ in men and women, but it has not been stablished. Purpose We assessed the influence of the ischemic burden as derived from CMR on the risk of death and the effect of revascularization across sex. Methods We evaluated 6,237 consecutive patients with known or suspected chronic coronary syndrome (CCS). Extensive ischemia was defined as >5 segments with perfusion deficit. Multivariate Cox proportional hazard regression models were used. Results A total of 2,371 (38.0%) patients were women and 583 (9.3%) underwent CMR-r…
TMS-evoked long-lasting artefacts: A new adaptive algorithm for EEG signal correction
2017
Abstract Objective During EEG the discharge of TMS generates a long-lasting decay artefact (DA) that makes the analysis of TMS-evoked potentials (TEPs) difficult. Our aim was twofold: (1) to describe how the DA affects the recorded EEG and (2) to develop a new adaptive detrend algorithm (ADA) able to correct the DA. Methods We performed two experiments testing 50 healthy volunteers. In experiment 1, we tested the efficacy of ADA by comparing it with two commonly-used independent component analysis (ICA) algorithms. In experiment 2, we further investigated the efficiency of ADA and the impact of the DA evoked from TMS over frontal, motor and parietal areas. Results Our results demonstrated t…
Short-term and long-term results of cardiac surgery in elderly and very elderly patients
2011
Objective: Cardiac operations in elderly patients are increasingly frequent and imply major clinical, ethical, and economic issues. Operative and 5-year results of cardiac operations in patients aged 79 years or more are known in limited series, and a debate is ongoing on the appropriateness of selection of patients for surgery. Methods: We retrospectively reviewed our experience in 6802 patients aged 79 years or more who had received a cardiac operation. Surgical candidates were selected according to functional status, crude operative risk, and social context and were managed according to a multimodality protocol. Results: Mean age was 82 years and surgery was nonelective in 1613 cases (23…