View clinical trials related to Vascular System Injuries.
Filter by:Background: For thirty years, a major shift in the management of liver trauma has been seen. Contained hepatic vascular injuries (CHVI), including pseudo aneurysms and arteriovenous fistula, are often feared due to their risk of secondary bleeding. Nonetheless, knowledge of CHVI is scarce and no guidelines on their management have been set. The investigators aimed to validate the risk factors of CHVI, identify associated morbidities, and establish a management protocol. Study Design: A retrospective study on 318 liver trauma from a level 1 trauma center over the last 15 years, comparing the presence or not of CHVI. Univarious and multivarious analyses were performed. A comparison of the management of CHVI was also performed.
Severe Acquired Brain Injury (sABI) is defined as "an encephalic impairment that occurs after birth and is not related to a congenital or degenerative disease. This impairment may be temporary, or permanent, and cause partial or functional disability or psychosocial distress." In Italy there are at least 10-15 new cases of sABI per year per 100,000 inhabitants; the estimated prevalence is about 150,000 cases per year. Often, people with sABI present focal neurological deficits, including alterations in strength, sensitivity, coordination and gait. Most of the rehabilitation protocols for people with sABI are derived from post-stroke studies, caused by lack of evidence on specific rehabilitation of people with sABI. Rehabilitation of people with sABI should begin as soon as possible, to prevent the onset of retractions and decubitus, and to regain joint mobility, strength, and coordination. OMEGO® (Tyromotion) is a newly developed device used in lower extremity rehabilitation, that provides visual and auditory feedback. Specifically, OMEGO® contains several games developed to enhance and promote learning behaviors, that simulate activities of daily living. The use of devices such as cycle ergometers is recommended in the rehabilitation of people with sABI; however, there are no studies demonstrating the effect of cycle ergometer training in association with visual feedback. The purpose of this study is to evaluate, both in people without apparent pathology (hereafter identified as "healthy") and in people with sABI, whether visual feedback during OMEGO® exercise modifies brain connectivity, emotional drive, and lower limb performance during a lower limb-specific motor rehabilitation task.
Stroke can lead to signficiant neurological deficits, and about one-third of stroke patients will be diagnosed of vascular mild cognitive impairment or post-stroke dementia. Post-stroke dementia includes all types of dementia that happen after stroke, irrespective of their cause, and vascular dementia (VaD), degenerative dementia (especially Alzheimer's disease), or mixed dementia (dementia as a result of the coexistence of vascular lesions of the brain and neurodegenerative lesions) are the most common causes of post-stroke dementia. However, it is difficult to determine to what extent cognitive impairment may be attributable to stroke versus concomitant Alzheimer disease. With the advent of PET imaging technique, we are able to conduct a multi-modal neuroimaging study to explore the composite influence of vascular injury, amyloid plaque and Tau protein the the cognitive performance after stroke.
The presence of dyslipidemia, is a significant cardiovascular risk factor. This factor, however, determines the three-fold increase in cardiometabolic risk when an isolated or mixed dyslipidemia is associated with the presence of diabetes mellitus. Diabetes mellitus is a metabolic alteration resulting in a decrease in insulin secondary to reduced availability of this hormone or an impediment to its normal action or a combination of these factors. . Under normal conditions, the vascular endothelium responds to short-term increases in flow by releasing NO and other endothelium-dependent relaxing factors that dilate the artery. Flow-mediated dilation(FMD) is impaired in atherosclerotic coronary arteries. The supplementation with polyphenols of olive leaves, bergamot extract, gymnema sylvatic extract (gymnemic acid) and phaseolamin (bean protein) significantly improves the glico-lipid balance through an improvement in liver function, an inhibition to more levels of lipid metabolism . Recently, it has been documented how the polyphenolic fraction extracted from bergamot (BPF) administered orally both in animal models with induced hyperlipidemia diet, and in patients with metabolic syndrome, produces a significant and substantial reduction of serum cholesterol, triglycerides and blood levels of glucose. This effect was accompanied by an important improvement in vascular reactivity in patients with hyperlipidemia and high blood sugar, suggesting the potential protective role of BPF in patients with metabolic syndrome and elevated cardiovascular risk. Oleuropeina (Olea Europaea) is also characterized by a peculiar polyphenolic profile. Both fruits and leaves, thanks to their cardioprotective activity, are used as antihypertensive agents and in the treatment of vascular disorders. The gymnemic acid (glycosidic triterpene), extracted from the leaves of Gymnema Sylvestre, is the representative element of the plant. Thanks to its presence in the phytocomplex, it carries out a hypoglycaemic action through two main mechanisms: inhibition of intestinal sugar absorption and increased metabolic transformation of glucose at the cellular level. To better define the interrelations of systemic CRFs, FMD, and effects of chronic nutraceutical supplements we performed clinical evaluations and ultrasound measurements of the flow and diameter responses to forearm cuff occlusion in a large, well characterized community-based cohort.
We plan to track the migratory behaviour of culture-expanded enothelial outgrowth cells in the context of vascular injury sustained during elective coronary angiography. We will use Flouro-deoxyglucose-labelling and PET-CT to track the endothelial cells.
Primary percutaneous coronary intervention represents the gold standard for the treatment of ST-segment-elevation acute myocardial infarction. However, periprocedural bleedings are associated with an increased risk of mortality, re-infarction, and stroke. Although the prognostic value of access site related bleeding complications is still debated, transradial approach is associated with better short-term outcomes and reduced hospital stay as compared to transfemoral approach. The investigators aimed to compare transradial approach with transfemoral approach with systematic achievement of hemostasis by the implantation of a vascular closure device in a national multicentre randomized clinical trial.
Ischeic reperfusion injury lead to a cellular dyfunction and increase in soluble glycocalyx of blood flow. syndecan-1 was a marker of glycocalyx. The purpose of this study is to prove the variation of level of serum syndecan-1 between preoperative and postoperative period.
Formation of reactive oxygen species (ROS) contributes to pathogenesis and progression of several diseases. Polyphenols, have been shown to be beneficial against ROS. This study evaluate the effects of a natural antioxidant ice-cream,rich in polyphenols, on oxidative stress, vascular function and physical performance. In this controlled, single-blind cross-over study, 14 healthy subjects were randomized to assume 100 mg of antioxidant ice-cream consisting of dark cocoa powder, extract of hazelnut and green tea, or milk chocolate ice-cream (control ice-cream). Subjects were studied at baseline and two hours after the ingestion of the ice-creams. Serum polyphenols, antioxidant status (ferric reducing ability of plasma, FRAP), NO bioavailability (NOx), markers of oxidative stress (D-Roms and H2O2), endothelium function (FMD and RHI) and exercise tolerance (Stress Test) with measurement of the double product were assessed.
This cross-over study of twenty five (anticipated) healthy human subjects will utilize two active control devices, and two different widths of the investigational device. One active control is representative of the usual care tourniquet applied in hospital settings. The second active control is a windlass tourniquet representative of the pre-hospital and military usual care tourniquet device. Two inch and four inch widths of the investigational device will be evaluated. The purpose of this study is to characterize and compare investigational and control tourniquet safety and efficacy. All tourniquets will be applied to the upper thigh. Efficacy data is provided by the presence or absence of popliteal flow when assessed with ultrasound. Mapping of interface pressures between the skin and the tourniquet will provide safety data. A minimum washout of five minutes will be allowed between tourniquet applications. All interventions will be applied in one visit. No follow up visit is anticipated.
The main purpose of this study was to evaluate the effects of melatonin in the regulation of the vascular injury in smokers through population-based, randomized, double-blind, placebo-controlled trial.