Active clinical trials for "Aneurysm"

In the stage of registration study, our purpose is to find out the safety range of activated coagulation time level in cerebral aneurysm and arteriovenous malformations with hybrid operation.

This study explore AAA prevalence in OSAHS patients by ultrasound screening and try to analysis risk factors of AAA in OSAHS patients.

Aortic dissection is dangerous and difficult to predict, so it is particularly important to carry out early prevention, diagnosis and rational treatment for high-risk groups. The related genes found in previous studies can not be detected in all patients with dissection; at present, the pathogenesis of non-syndromic aortic dissection is not clear, of which about 20% of patients have family aggregation and have the general representative characteristics of non-syndromic dissection. In this project, the peripheral blood samples of core family subjects were detected by sequencing technique. analyze disease-related susceptibility genes; 2 determine the effect of susceptibility genes on the incidence of dissection in mice through animal experiments; and 3 explore the effect of susceptibility genes on cell function at the cellular level.

The aim of the present study is the evaluation of cardiovascular biomarkers in patients with abdominal aortic aneurysms (AAA) or abdominal aortic occlusive disease AOD) undergoing open (OR) or endovascular aortic repair (EVAR) with regards to short- and long-term outcome. By blood collection and measurement of the serum biomarkers Copeptin, N-terminal- pro Brain Natriuretic Peptide (NT-proBNP), cardiac Troponin I (cTnI), high sensitive Troponin T (hs-cTnT) and C-reactive Protein (CRP) we expect an improvement of patients stratification by assessment of cardiac stress tolerance. Data gathered may help to simplify the decision whether an open or endovascular approach for abdominal aortic repair (OR and EVAR) should be performed. Study Hypothesis: The evaluation of the predictive value of cardiovascular biomarkers (Copeptin, NT-proBNP, hsTnT, cTnI, CRP) improve patient stratification and selection of surgical treatment.

The purpose of this study is to generate detailed insight into which therapies of giant intracranial aneurysms are being conducted, to document the natural history and the outcome of treatment over 5 years after inclusion into the Registry and to follow imaging data of giant aneurysms over years after diagnosis.

The primary objective of the study is to evaluate the acute safety of deploying and implanting the Altura Endograft in the treatment of AAA in subjects who are candidates for endovascular repair. Secondary objectives are to evaluate the acute and longer-term safety and performance of the Altura Endograft through 5 years.

Prospective registry study to evaluate safety and efficacy of stent assisted embolization of intracranial aneurysm.

The association between alcohol consumption and cardiovascular disease (CVD) has mostly been examined using broad endpoints or cause-specific mortality. The purpose of our study is to compare the effect of alcohol consumption in the aetiology of a range of cardiovascular disease phenotypes.

PURPOSE: To compare crash cooling versus gradient cooling methods for patients undergoing planned surgery on the ascending aorta in deep hypothermic circulatory arrest. To investigate the impact of hypothermia and circulatory arrest on the coagulation, stress-response, and cerebral outcome. BACKGROUND: Cooling to 18 °C using extracorporeal circulation allows for circulatory arrest during surgery on the ascending aorta. Two different methods are used either lowering the temperature of the blood by 10 °C at a time, gradient cooling, or as cold as possible, crash cooling. The distribution of hypothermia is expected to be different for the two methods, the latter predominantly cooling the body core. The influence on the physiological response is expected to vary with the two methods. The surgical procedure and the cooling greatly elicit a stress response and the coagulation is profoundly influenced. There can be adverse effects on the neurological outcome due to the procedure. The two methods are considered equal, but have never been subjected to comparison. The surgery and circulatory changes can have a negative influence on the cerebral outcome . METHODS: Twenty patients between 18 and 80 yrs randomized either to crash cooling or gradient cooling, ten patients in each group.. Patients with severe comorbidities or known coagulopathy are excluded. Anesthesia and operation as performed routinely in the department. The primary endpoint is duration of cooling, secondary endpoints include coagulation parameters (thromboelastography, clot stability), stress response parameters (adhesion molecule expression on endothelial cells, oxidative stress analysis, inflammatory markers), neuropsychological tests, MRI of the cerebrum, markers of cerebral ischemia, and ultrasound imaging of the great vessels for detection of air bubbles. Baseline values are obtained for all parameters.

Aneurysm diameter is an important risk for rupture and related death in affected patients. This study will evaluate whether aneurysms size may even influence post procedural outcomes both in open surgical repair and in end-vascular aneurysm repair. We will retrospectively review clinical data of operated patients with abdominal aortic aneurysm. We will consider both open surgical repair and endovascular aneurysm repair procedures in order to assess the influence of aneurysm size at the time of intervention.