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Single bolus split dynamic MRI: Is the combination of high spatial and dual‐echo high temporal resolution interleaved sequences useful in the differential diagnosis of breast masses? 下载免费PDF全文
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Monika Janda Nigel R Armfield Katie Page Gayle Kerr Suzanne Kurz Graeme Jackson Jason Currie Edward Weaver Anusch Yazdani Andreas Obermair 《Patient education and counseling》2018,101(3):504-510
Objective
To explore factors influencing how well-informed women felt about hysterectomy, influences on their decision making, and on them receiving a less-invasive alternative to open surgery.Methods
Online questionnaire, conducted in 2015–2016, of women who had received a hysterectomy in Australia, in the preceding two years.Results
Questionnaires were completed by 2319/6000 women (39% response). Most women (n = 2225; 96%) felt well-informed about hysterectomy. Women were more aware of the open abdominal approach (n = 1798; 77%), than of less-invasive vaginal (n = 1552; 67%), laparoscopic (n = 1540; 66%), laparoscopic-assisted (n = 1303; 56%), and robotic approaches (n = 289; 12%). Most women (n = 1435; 62%) reported their gynaecologist was the most influential information source. Women who received information about hysterectomy from a GP (OR = 1.47; 95% CI 1.15-1.90), or from a gynaecologist (OR = 1.3; 95% CI 1.06-1.58), were more likely to feel better informed (p < 0.01).Conclusion
This study is important because it helps clinicians, researchers and health policy makers to understand why many women still receive an open abdominal approach despite many learned societies recommending to avoid it if possible.Practice implications
Additional information, or education about avoiding open abdominal approach where possible may lead to a greater number of women receiving less-invasive types of hysterectomy in the future. 相似文献8.
LY53857, a selective and potent serotonergic (5-HT2) receptor antagonist, does not lower blood pressure in the spontaneously hypertensive rat 总被引:8,自引:0,他引:8
M L Cohen R W Fuller K D Kurz 《The Journal of pharmacology and experimental therapeutics》1983,227(2):327-332
LY53857 was a potent antagonist of vascular contraction to serotonin, which is mediated by serotonergic (5-HT2) receptors, with a dissociation constant in vitro of 5.4 X 10(-11) M. Unlike several other serotonin antagonists, LY53857 showed minimal affinity for vascular alpha adrenergic receptors (dissociation constant of 1.4 X 10(-5) M). Thus, LY53857 was a highly potent and selective antagonist at 5-HT2 receptors. In vivo activity paralleled the in vitro observations. In pithed spontaneously hypertensive rats (SHR), LY53857 at 0.1 and 3.0 mg/kg i.p. produced a 22-and 480-fold shift, respectively, in the pressor response to serotonin whereas LY53857 at 10 mg/kg did not alter the pressor response to the alpha receptor agonist, methoxamine. Furthermore, LY53857 administered peripherally also inhibited central serotonin receptors, as evidenced by blockade of the serum corticosterone increase produced by the central actions of the serotonin agonist, quipazine, and by antagonism of tryptamine-induced convulsions in rats. LY53857 in doses that blocked the pressor response to serotonin and that blocked central serotonin receptors did not lower mean arterial blood pressure in the SHR. Thus, the lack of effectiveness of LY53857 to lower blood pressure in the SHR indicates that blockade of both central and vascular serotonin receptors is not a sufficient mechanism to lower blood pressure in this model of hypertension. 相似文献
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Drzezga A Grimmer T Henriksen G Stangier I Perneczky R Diehl-Schmid J Mathis CA Klunk WE Price J DeKosky S Wester HJ Schwaiger M Kurz A 《NeuroImage》2008,39(2):619-633
Semantic dementia (SD) is a rare clinical syndrome, assigned to the group of frontotemporal lobar degenerations (FTLD). Histopathological analysis has not revealed the deposition of amyloid plaques in the majority of SD cases, in contrast to dementia of the Alzheimer type (AD). However, based on clinical examination alone a reliable differentiation of the underlying pathology cannot be guaranteed, i.e. AD and SD may be confused in some cases. Our aim was to determine, whether AD and SD can be differentiated in vivo by means of amyloid plaque PET imaging. In groups of AD and SD patients, matched for gender, age and overall degree of cognitive impairment, cerebral glucose metabolism was examined with [(18)F]Fluorodeoxyglucose (FDG)-PET and cerebral amyloid plaque density was assessed using [(11)C]6-OH-BTA-1 (PIB)-PET. A volume-of-interest analysis (VOI), using the cerebellum as a reference region, and voxel-based statistical group comparisons (SPM2) were carried out between the patient groups and matched groups of healthy controls. To control for a potential influence of atrophy on the PET findings, a correction of partial volume effects was performed. Characteristic patterns of hypometabolism could be demonstrated in both clinically defined AD and SD with some regional overlap and subtle differences (AD: bilateral posterior cingulate, temporoparietal and frontal cortex; SD: left>right polar temporal, frontal mesial cortex). Compared with healthy controls, significant [(11)C]PIB amyloid plaque tracer binding was observed only in patients with AD (in bilateral temporoparietal, frontal and posterior cingulate cortex and the precuneus) but not in SD. This difference in amyloid plaque deposition could be reproduced in direct statistical comparison of AD and SD and clearly extended the metabolic differences between the patient groups. These findings support the notion that SD can be diagnosed in vivo as a separate entity from AD using amyloid plaque imaging. In general, amyloid plaque PET may complement neuropsychological assessment regarding reliable differential diagnosis of AD and FTLD dementias based on characterization of underlying pathology and may improve the definition of individual prognosis and the selection of patients for scientific trials. 相似文献
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