Active clinical trials for "Aortic Aneurysm"

This is a prospective, multicenter, single-arm study designed to collect clinical data to support the safety and effectiveness of BioFoam used as a surgical adjunct to anastomotic hemostasis following cardiovascular surgery. The overall objective of this clinical study is to collect clinical data supporting the safety and effectiveness of BioFoam used as a surgical adjunct to anastomotic hemostasis following cardiovascular surgery. This study is intended as a post-market surveillance (follow-up) study.

The Post-Approval Study (PAS) will evaluate the "real world" data on the Ovation™/Ovation Prime™ Abdominal Stent Graft System along with the long-term data collected from the IDE cohort to monitor the long-term safety and effectiveness of the device.

The human genetic material consists of 46 chromosomes of which two are sex chromosomes. The sex-chromosome from the mother is the X and from the father the Y-chromosome. Hence a male consist of one Y and one X chromosome and a female of 2 X-chromosomes. Alterations in the number of sex-chromosomes and in particular the X-chromosome is fundamental to the development of numerous syndromes such as Turner syndrome (45,X), Klinefelter syndrome (47,XXY), triple X syndrome (47,XXX) and double Y syndrome (47,XYY). Despite the obvious association between the X-chromosome and disease only one gene has been shown to be of significance, namely the short stature homeobox gene (SHOX). Turner syndrome is the most well characterized and the typical diseases affecting the syndrome are: An Increased risk of diseases where one's own immune system reacts against one's own body (autoimmune diseases) and where the cause of this is not known; For example diabetes and hypothyroidism. Increased risk of abortion and death in uteri Underdeveloped ovaries with the inability to produce sex hormones and being infertile. Congenital malformations of the major arteries and the heart of unknown origin. Alterations in the development of the brain, especially with respect to the social and cognitive dimensions. Increased incidence obesity, hypertension, diabetes and osteoporosis. In healthy women with to normal X-chromosomes, the one of the X-chromosomes is switched off (silenced). The X-chromosome which is silenced varies from cell to cell. The silencing is controlled by a part of the X-chromosome designated XIC (X-inactivation center). The inactivation/silencing of the X-chromosome is initiated by a gene named Xist-gene (the X inactivation specific transcript).This gene encodes specific structures so called lincRNAs (long intervening specific transcripts) which are very similar to our genetic material (DNA) but which is not coding for proteins. The final result is that women are X-chromosome mosaics with one X-chromosome from the mother and the other X from the father. However, numerous genes on the X-chromosome escape this silencing process by an unknown mechanism. Approximately two third of the genes are silenced, 15 % avoid silencing and 20 percent are silenced or escape depending on the tissue of origin. The aforementioned long non-protein-coding parts of our genetic material (LincRNAs) are abundant and produced in large quantities but their wole as respect to health and disease need further clarification. Studies indicate that these LincRNAs interact with the protein coding part of our genetic material modifying which genes are translated into proteins and which are not. During this re-modelling there is left foot prints on the genetic material which can indicate if it is a modification that results in silencing or translation of the gene. It is possible to map these foot prints along the entire X-chromosome using molecular techniques like ChIP (Chromatin immunoprecipitation) and ChIP-seq (deep sequencing). The understanding achieved so far as to the interplay between our genetic material and disease has arisen from genetic syndromes which as the X-chromosome syndromes are relatively frequent and show clear manifestations of disease giving the researcher a possibility to identify genetic material linked to the disease. Turner and Klinefelter syndrome are, as the remaining sex chromosome syndromes, excellent human disease models and can as such help to elaborate on processes contributing to the development of diseases like diabetes, hypothyroidism, main artery dilation and ischemic heart disease. The purpose of the study is to: Define the changes in the non-coding part of the X-chromosome. Identify the transcriptome (non-coding part of the X-chromosome)as respect to the RNA generated from the X-chromosome. Identify changes in the coding and non-coding parts of the X-chromosome which are specific in relation to Turner syndrome and which can explain the diseases seen in Turner syndrome. Study tissue affected by disease in order to look for changes in the X-chromosome with respect to both the coding and non-coding part of the chromosome. 6. Determine if certain genes escape X-chromosome silencing and to establish if this is associated with the parent of origin.

After endovascular abdominal aortic aneurysm repair, life-long follow-up is needed to monitor the effectiveness of exclusion of the aneurysm sac from blood flow. For this reason, aneurysm diameter and the presence of endoleaks is evaluated with CT angiography yearly after Endovascular Aneurysm Repair (EVAR). The aim of this study is to investigate the value of MRA examinations for the follow-up of these patients. The advantages of MRA with respect to CTA are no use of ionizing radiation, use of less nephrotoxic contrast agents.

To investigate coronary heart disease and stroke among American men of Japanese ancestry who were living on the island of Oahu in 1965. Morbidity and mortality surveillance of the original cohort is continuing.

First aim: PARIS study The main aim of the current study is to determine the association between abdominal aortic aneurysm (AAA) progression and the evolution of proteases and cytokines levels.To achieve this aim, we will prospectively collect blood, aortic tissue, patient data, and imaging data. Aortic tissue will only be obtained when patients undergo conventional open repair. The other biomaterials will be collected during regular patient follow-up visits, with a maximum frequency of once per year. Second aim: Pearl AAA biobank For future research purposes, a new biobanking infrastructure will be created to collect and store additional blood and urine samples in a biobank. This biobank will be embedded within the infrastructure of the 'Parelsnoer Institute' (PSI) and will be called Pearl AAA. The Pearl AAA will be established in the extension of the PARIS study

The objective of this prospective cohort study is to determine the prevalence of obstructive sleep apnoea (OSA) in patients with and without thoracic aortic aneurysm.

Patients with abdominal aortic aneurysms (AAA) suitable for endovascular aortic repair (EVAR) with Treovance were eligible to participate. Main inclusion criteria were: age 18-85 years; infrarenal AAA without significant infrarenal or distal iliac landing neck calcification or thrombus formation; infrarenal or distal iliac landing neck size requirements specified in the instructions for use. Main exclusion criteria: dissection/ruptured aneurysm or prior AAA endovascular or surgical repair. The primary endpoints were standard EVAR criteria.

Biomarkers can play a vital role in prognosing the perioperative complications in thoracic aorta surgery. The goal of a study is to determine the correlation between intraoperative level of certain biomarkers and total amount of peroperative complications.

The 8-12 fold higher risk for sisters and brothers of patients with Abdominal Aortic Aneurysms (AAA) to develop AAA compared to persons in the population is well known in the scientific community. Recently the value of the screening program for siblings has been analyzed and is shown to be highly cost-efficient, similar to the population based screening of 65-year old men for AAA. Most importantly detection of siblings also adresses and includes women at risk. The adult offsprings to AAA patient would hypothetically bear the same risk of AAA as siblings. This has never been evaluated scientifically due to the practical difficulties in tracking the offspring and inviting them to screening at an age when they are at risk of AAA-disease. In Sweden, the unique multigeneration registry exists which could support such detection, with the possibility to track adult offspring to patients, and investigate the true contemporary prevalence in them. The DAAAD project aims at investigating the prevalence in adult offspring parallel to developing a model for such a selective screening program