Mortality, stroke and composite event (stroke/death) were compared between procedures after matching of patients by propensity score. Acute myocardial infarction (AMI) was our secondary ‘end’ point.
Results: More than 90% of patients in both sexes were asymptomatic (27,439 women and 36,295 men). Compared to men, asymptomatic women experienced more strokes after CEA (women: 1.38%, men: 1.16%, P = 0.03) and higher AMI rates after both procedures (CEA; women: 0.75%, men: 0.51%,
P = 0.0009, CAS; women: 0.96%, men: 0.28%, P = 0.01). Between procedures, symptomatic women undergoing CAS showed higher rates of mortality (CAS: 4.19%, CEA: 0.47%, SB203580 ic50 P = 0.01) and combined (stroke/mortality) events (CAS: 12.09%, CEA: 6.05%, P = 0.02). In all other cohorts, this website no statistically significant difference was found between the procedures.
Conclusions: Compared to CEA. CAS led to inferior in-hospital outcomes only in symptomatic women in the last decade in NYS. Men and asymptomatic women showed comparable outcomes after both procedures, whereas asymptomatic females were more prone to AMI
after both interventions. These sex-associated differences should be taken into account for the treatment of carotid artery disease. (C) 2012 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.”
“BACKGROUND: Bubble columns (BCs) and airlift reactors (ALRs) have important applications
as bioreactors, chemical reactors and as contactors in waste-water treatment. The liquid phase properties in these reactors significantly influence the main hydrodynamic and mass transfer characteristics. Dilute alcohol solutions can be used to simulate real industrial systems in bioreactors. However, only a few research studies have considered such systems. The aim of this paper is to broaden the existing experimental data related to the influence of alcohol addition on the main characteristics of draft tube airlift reactors (DT-ALRs), and to propose simple correlations for their prediction.
RESULTS: New experiments were conducted in a DT-ALR with a single orifice sparger, Alvocidib order and with dilute aliphatic alcohol solutions from methanol to n-octanol. Also, simple correlations were developed to predict the gas hold-up and volumetric mass transfer coefficients in BCs and DT-ALRs, but also the downcomer liquid velocity and liquid circulation time DT-ALRs with single orifice sparger and dilute alcohol solutions. The proposed correlations included, in addition to the superficial gas velocity, the surface tension gradient as the only factor to characterize the liquid phase.
CONCLUSIONS: General conclusion can be made that the gas holdup increased, but the downcomer liquid velocity decreased in a DT-ALR, with increase in surface tension gradient of the alcohol solutions.