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cance for reducing the risk of hemorrhagic stroke in patients with hypertension. Post-stroke depression (PSD) occurs in approximately one-third of ischemic stroke patients. However, there is conflicting evidence on sex differences in PSD. We sought to assess sex differences in risk and time course of PSD in US ischemic stroke (IS) patients. We hypothesized that women are at greater risk of PSD than men, and that a greater proportion of women experience PSD in the acute post-stroke phase. We conducted a retrospective cohort study of 100% de-identified data for US Medicare beneficiaries admitted for ischemic stroke from July 1, 2016 to December 31, 2017. We calculated Kaplan-Meier unadjusted cumulative risk of depression, stratified by sex, up to 1.5 years following index admission. We performed Cox regression to report the hazard ratio (HR) for diagnosis of depression up to 1.5 years post-stroke in females vs. males, adjusting for patient demographics, comorbidities, length of stay, and acute stroke interventions. In elderly stroke patients, females (n=90,474) were 20% more likely to develop PSD than males (n=84,427) in adjusted models. Cumulative risk of depression was consistently elevated for females throughout 1.5 years of follow-up (0.2055 [95% CI 0.2013-0.2097] vs. 0.1690 [95% CI 0.1639-0.1741] (log-rank p<0.0001). HR for PSD in females vs. males remained significant in fully adjusted analysis at 1.20 (95% CI 1.17-1.23, p<0.0001). Over 1.5 years of follow-up, female stroke patients had significantly greater hazard of developing PSD, highlighting the need for long-term depression screening in this population and further investigation of underlying reasons for sex differences. Over 1.5 years of follow-up, female stroke patients had significantly greater hazard of developing PSD, highlighting the need for long-term depression screening in this population and further investigation of underlying reasons for sex differences. Post-tonsillectomy hemorrhage (PTH) is a serious complication after a tonsillectomy. Utility of lab work at presentation for PTH was low. This study aims to determine the frequency and type of labs drawn at emergency department (ED) presentation and assess the incidence of uncovering a previously unidentified coagulopathy. A retrospective chart review was performed on pediatric patients who were seen in the ED after tonsillectomy at a tertiary care children's hospital from 2017 to 2019. Exclusion criteria were the following no tonsillar bleed, history of known coagulopathy, treated by outside provider, ≥18 years old. Lab work included complete blood count (CBC), prothrombin time (PT), partial thromboplastin time (PTT), and von Willebrand factor (VWF). 364/723 (50.3%) patients met inclusion criteria. 179/364 (49.2%) patients were male and 309/364 (84.9%) patients were Caucasian. Average age at surgery was 8.12 years (SD=4.0) and average post-operative day at presentation was 6 days (SD=2.1). Operative cong abnormal vital signs. Thrombocytosis was the next common abnormality, and this can be seen in an inflammatory state. Developing algorithms is necessary to better guide appropriate lab work in patients who present with PTH and to provide optimal value of care to patients. Uncovering incidental coagulopathies is rare in patients who present with PTH. Though anemia was the most common abnormality noted, only a small percentage required transfusion, with all having abnormal vital signs. Thrombocytosis was the next common abnormality, and this can be seen in an inflammatory state. Developing algorithms is necessary to better guide appropriate lab work in patients who present with PTH and to provide optimal value of care to patients.Fundamental understanding of the reverse osmosis (RO) transport phenomena is necessary for quantitative prediction of contaminant rejection and development of more selective membranes. The solution-diffusion (S-D) model predicts a tradeoff relationship between permeability and selectivity, and this tradeoff trend was recently reported for RO. But the first principles governing the relationship are not well understood for aqueous separation membranes. This study presents a framework to elucidate the underlying factors of the permeability-selectivity tradeoff relationship in thin-film composite polyamide (TFC-PA) membranes. Water and solute permeabilities of membranes with a range of selectivities are examined using six nonelectrolyte solutes of various sizes and dimensions. The permeability-selectivity tradeoff trend, as defined by S-D, was observed for all six solutes. Crucially, the slopes of the tradeoff lines, λ, are found to be related to the solute and solvent (i.e., water) diameters, ds and dw, respectiransport can, in principle, be a priori predicted using molecular diameter. https://www.selleckchem.com/products/icfsp1.html Findings of this investigation provide new insights for understanding the transport mechanisms in osmotic membrane processes. Perfluorocarbon emulsions (PFCs) are intravenous artificial oxygen carriers with enhanced gas solubility. As lipid micelle nanoparticle emulsions, PFCs may have a class effect that causes degrees of thrombocytopenia. Understanding the extent of the platelet effects, including mechanism and potential inflammation after PFC infusion, is important for safe human trials. Normal sheep (Dorper) were infused with 5 mL/kg of Oxygent (w/v 60% PFC) or Perftoran (w/v 20% PFC). Controls received 6% Hetastarch or were naive. Blood samples were analyzed from baseline, time 0 (the end of infusion), 3 and 24 hours, and 4 and 7 days. Platelet count, plateletcrit, mean platelet volume, platelet distribution width, and CD-62p (a platelet activation-dependent membrane protein) were measured. Neutrophils, monocytes, and total white blood cell counts were analyzed. In these inflammatory cell lines, there were no consistent changes or cellular activation after PFC infusion. A decrease (<10% from baseline and naive controls) in platelet count was seen on day 4 after Oxygent infusion (3 g/kg), which recovered by day 7. No platelet effect was seen in Perftoran (1 g/kg). Plateletcrit, mean platelet volume, and platelet distribution width did not change significantly at any time point among the groups. CD-62p, ADP, and collagen aggregometry showed no significant change in platelet function. There was no evidence of overall reduction in platelet number, or any correlation with the change in platelet activation or inhibition. Therefore, the risk of increased thrombosis/bleeding after PFC intravenous infusion is low in this non-trauma sheep model. There was no evidence of overall reduction in platelet number, or any correlation with the change in platelet activation or inhibition. Therefore, the risk of increased thrombosis/bleeding after PFC intravenous infusion is low in this non-trauma sheep model.
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