Active clinical trials for "Aneurysm"

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.

Intracranial aneurysm are frequent with a prevalence estimated over 2-5% in the general population. These are focal dilatations occuring in the cerebral vessels. They usually remain silent until complications occur. Complications associated with intracranial aneurysms include mass effect on adjacent structures and rupture. Rupture is the most severe complication with a mortality rate of 35-50% and a high rate of morbidity including long-term disability. It incidence is estimated about 1% per year for aneurysm smaller than 1 cm. However, preventative treatments have their own risk of complication and morbi-mortality rate including stroke and hemorrhage. Actual guidelines for treatment planning are mainly designed with the size, the location and the age of the patient. This is why working on the identification of imaging markers of aneurysmal instability is relevant. Dynamic CTA (Computed Tomography Angiography) acquisition allow to study the variation of metrics such as dome height, dome length, ostium width, ostium area, and volume during the cardiac cycle. The goal of this study is to assess different aneurysmal metrics to determine those which may vary the most during the cardiac cycle and to assess it as an imaging marker of aneurysmal instability.

Searching a dysfunction of corticotropic and thyrotropin axis during the acute phase ( ≤48h ) of a subarachnoid hemorrhage secondary to spontaneous rupture of cerebral aneurysm. Impact on the incidence of complications and recovery are evaluated at 1 month. Blood sample are made within 48 hours of the onset of bleeding with assay of total plasma cortisol, plasma ACTH at 8 am and thyroid hormones (T3, free T4 , and TSH). Dynamic test ACTH stimulation (test Synacthene) with renewal of serum cortisol to H + 1 (60min). Evaluation in the first 30 days of the incidence of rebleeding, hydrocephalus, of vasospasm, infection and epilepsy. GOS to 1 month.

International, non-randomized, European , multicenter, observational study to collect data for the treatment of intracranial aneurysms with OPTIMA coils system to further document its safety and efficacy

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

Perform a prospective cohort study to compare the incidence and severity of headache between non-stent assisted coiling and stent assisted coiling of unruptured intracranial aneurysms.

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.

Rapid ventricular pacing (RVP) is a technique to obtain flow arrest for short periods of time during dissection or rupture of the aneurysm. RVP results in an adequate fall of blood pressure which presents as an on-off phenomenon. It is not clear whether repetitive periods of pacing are harmless for the patient. Silent cardiac and cerebral infarcts may be undetected. The investigator will study the safety of RVP, particularly for the heart and the brain, retrograde by studying troponin levels and magnetic resonance imaging or computed tomography.

Spleen artery aneurysm represents the most common visceral aneurysm and the third most common splanchnic aneurysm. Most patients have no symptoms and are diagnosed as a part of other diagnostic focuses and examinations. The investigators present two patients with splenic artery aneurysms localized in the splenic hilum, who auspiciously undergo laparoscopic splenectomies with hem-o-lock clips in the vascular hilum without complications. These two cases showed that in addition to the numerous advantages of minimally invasive approaches, there is the possibility to improve laparoscopic technique in terms of safety and economic reasons by using hem - o - lock clips as a hemostatic technique securing the vascular elements of the splenic hilum.