نتایج جستجو برای: vascular blockage
تعداد نتایج: 226376 فیلتر نتایج به سال:
Background: Cardiovascular disease (CVD) has caused at least 1.1 million deaths per year globally. Heart and blood vessel are silent killer which can cause disability or death if left untreated. Stress on the walls of vessels leads to hypertrophy hyperplasia vascular smooth muscle causing endothelial damage facilitating atherosclerosis. Endothelial dysfunction indirectly affects platelet (throm...
background: the purpose of this study was to evaluate the fallopian tube of women with infertility and to observe whether there are any significant differences in the hysterosalpingogram findings with regard to prevalence of tubal block in women with primary and secondary infertility. methods: a retrospective study of unilateral and bilateral tubal obstruction in hysterosalpingogram of women wi...
Over the past two decades, field of vascular surgery has experienced tremendous advances in technique and technology. After description anastomosis by Dr. Alexis Carrel almost one hundred years ago, subsequent were slowly crowned differentiation general surgeons (Friedman 2016). Notably, able to distinguish themselves developing acquiring techniques that are specific operations surgery. This ty...
Prostanoids derived from arachidonic acid (AA) have been shown to play a permissive role in the regulation of vascular tone and wall tension. Conventionally, epoxyeicosatrienoic acids (EETs) and prostacyclin have been considered as dilatators, whereas thromboxane (TX) and hydroxyeicosatetraenoic acid (HETE) were considered as vasoconstrictors. However, the role of these prostanoids in the media...
We present a method to produce vascular disruptions within rat brain parenchyma that targets single microvessels. We used two-photon microscopy to image vascular architecture, to select a vessel for injury and to measure blood-flow dynamics. We irradiated the vessel with high-fluence, ultrashort laser pulses and achieved three forms of vascular insult. (i) Vessel rupture was induced at the high...
A huge number of deaths in the world are the direct or indirect consequence of a disease which is called atherosclerosis. The disease could be due to an artery blockage by the interaction of an externally second phase with a particle which is entered to the bloodstream. The effect of some most important physical and geometrical affecting parameters on the blockage time of a microchannel due to ...
Five new mathematical triple fouling models were developed to explore the flux decline behavior during the microfiltration. The first model was developed by the assumption of the successive effects of standard mechanism, intermediate pore blockage and cake formation by using the standard blocking flux expression in the model calculations. The second and third models also obtained by the success...
Abstract Background Angiofibroma is a rare, histologically benign but locally aggressive vascular tumour that typically arises within the nasopharynx. in sites other than nasopharynx extremely uncommon. Despite histological similarities, clinical features of this are very much different from typical nasopharyngeal angiofibroma and pose diagnostic challenge, hence emphasizing importance thorough...
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