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141.
Antonios Douros Christel Renoux Hui Yin Kristian B. Filion Samy Suissa Laurent Azoulay 《The American journal of medicine》2019,132(2):191-199.e12
Purpose
Patients with nonvalvular atrial fibrillation commonly have comorbidities requiring concurrent use of oral anticoagulants and antiplatelets. There are no real-world data on the comparative safety of concomitant antithrombotic treatments in the era of direct oral anticoagulant (DOACs). Thus, we compared the incidence of intracranial hemorrhage, gastrointestinal bleeding, and other major bleeding between concomitant DOAC-antiplatelet use and concomitant vitamin K antagonist (VKA)-antiplatelet use in patients with nonvalvular atrial fibrillation.Methods
Using computerized health care databases from Québec, we conducted a cohort study among patients newly diagnosed with nonvalvular atrial fibrillation between January 2011 and March 2014. Cox proportional hazards models yielded hazard ratios (HRs) and 95% confidence intervals (CIs), adjusted for disease risk score, of the study outcomes comparing current concomitant use of DOACs with ≥1 antiplatelet vs current concomitant use of VKAs with ≥1 antiplatelet.Results
A total of 5301 patients initiated concomitant DOAC-antiplatelet use, while 9106 patients initiated concomitant VKA-antiplatelet use. During a median follow-up of 1.6 months, concomitant DOAC-antiplatelet use was associated with a similar risk of gastrointestinal bleeding (HR 1.08; 95% CI, 0.81-1.45), but with a decreased risk of intracranial hemorrhage (HR 0.46; 95% CI, 0.24-0.91) and other major bleeding (HR 0.68; 95% CI, 0.51-0.91) compared with concomitant VKA-antiplatelet use.Conclusions
Concomitant DOAC-antiplatelet use was associated with a similar risk of gastrointestinal bleeding, and a lower risk of intracranial hemorrhage and other major bleeding than concomitant VKA-antiplatelet use. These findings could inform physician decision-making in patients requiring concomitant treatment with oral anticoagulants and antiplatelets. 相似文献142.
Youssef AS Willard L Downes A Olivera R Hall K Agazzi S van Loveren H 《Acta neurochirurgica》2012,154(7):1275-1283
Background
The frontotemporal-orbitozygomatic (FTOZ) approach, also known as “the workhorse of skull base surgery,” has captured the interest of many researchers throughout the years. Most of the studies published have focused on the surgical technique and the gained exposure. However, few studies have described reconstructive techniques or functional and cosmetic outcomes. The goal of this study was to describe the surgical reconstruction after the FTOZ approach and analyze the functional and cosmetic outcomes. 相似文献143.
144.
Aneurysm of a Common Celiomesenteric Trunk 总被引:1,自引:0,他引:1
145.
146.
Tumors found in the cerebellopontine angle are predominantly vestibular schwannomas. Mixed tumors found within the cerebellopontine angle are thought to be exceedingly rare and exclusively associated with neurofibromatosis 2. We report a case of a mixed tumor composed of Schwann and meningeal cell proliferations in a patient who was not diagnosed as having neurofibromatosis 2. Mixed tumors composed of neoplastic Schwann and meningeal cells have rarely been reported. However, new evidence indicates that these mixed tumors may be more common than was previously thought and may have an interrelated mechanism of pathogenesis. Although the case we describe does not fulfill the current diagnostic criteria for neurofibromatosis 2, a presumptive diagnosis was given, suggesting that the current diagnostic criteria for neurofibromatosis 2 may be too narrow. 相似文献
147.
148.
Antibodies directed toward the antitumor protein neocarzinostatin (NCS) have been produced in a rabbit by immunization with a highly purified NCS preparation. The antiserum was monospecific and reversed the antibacterial activity of NCS against Sarcina lutea. It cross-reacted with chemically modified derivatives of NCS and mitomalcin but failed to cross-react with macromomycin. A radioimmunoassay procedure has been developed utilizing the antiserum and a biologically active 125I-labeled derivative of NCS. The lower limit of detection by this radioimmunoassay, which involves a double antibody technique for the separation of antibody-bound and free antigen, was 1 X 10(-13) mole. The sensitivity of the assay is such that serum levels of NCS can be determined accurately after administration of the drug to rats at a single dose of 2 mg/kg. Since NCS is now undergoing clinical trial, the radioimmunoassay of the drug will be a valuable tool in clinical pharmacological studies. 相似文献
149.
Shen JX Wang H Tadros S Hayes RN 《Journal of pharmaceutical and biomedical analysis》2006,40(3):689-706
Validation of the bioanalytical method for determination of desloratadine and 3-hydroxydesloratadine was conducted using ultra high pressure liquid chromatography (UPLC) in conjunction with mix mode solid phase extraction. The dynamic range of the assay was from 0.025 ng/mL to 10 ng/mL using 96-well solid phase extraction. On an UPLC system, the inter-run accuracy was better than 94.7% for desloratadine (n = 18) and 94.0% for 3-hydroxydesloratadine (n = 18). The between-run precision (%CV) ranged from 2.6% to 9.8% for desloratadine (n = 18) and 3.1% to 11.1% for 3-hydroxydesloratadine (n = 18). The limit of quantitation represented 0.478 pg and 0.525 pg of extracted material injected on-column for desloratadine and 3-hydroxydesloratadine, respectively. The total run time was slightly over 2 min per sample. The approach of orthogonal extraction/chromatography and UPLC significantly improves assay performance while also increasing sample throughput for drug development studies. 相似文献
150.
Mokhtar Toppozada Mohie Khowessah Said Shaala Samy Said Mohamed Osman 《Contraception》1976,13(6):749-761
The effect of prostaglandin E2 (PGE2) on the non-pregnant human uterus was evaluated in 35 patients. The compound was administered both by the i.v. and intra-uterine routes. Two groups of volunteers were studied; fifteen cases who were under oral contraceptives and twenty women with normal ovulatory cycles. The latter group served as the control group. The uterus under the influence of oral contraceptives showed a markedly reduced response to i.v. injections of PGE2 at all phases of the menstrual cycles. However, the response at mid-cycle to local instillation of the compound was contradictory in the two groups, i.e. local intra-uterine instillation of PGE2 induced uterine stimulation in pill users as compared to the usually observed uterine inhibition in ovulatory (control) cases around mid-cycle. In the proliferative and luteal phases (early and late in the cycle), the response to intra-uterine injections was qualitatively similar in the two groups but greatly reduced quantitatively in the pill user group. The implications of these findings in certain physiological processes and pathological conditions related to reproduction are discussed. 相似文献