Search results for "Aortic"
showing 10 items of 619 documents
An abdominal aortic aneurysm (AAA) in combination with duplication of the inferior vena cava (IVC), the right renal artery (RRA) and the right renal …
1990
Intra-abdominal abnormality of vessels may sometimes lead to complications. A case of the rare combination of an abdominal aortic aneurysm (AAA) at the origin of the inferior mesenteric a. with duplications of the inferior vena cava (IVC), the right renal a. (RRA) and the right renal v. (RRV) as well as absence of the left common iliac v. is reported.
Acute inferior myocardial infarction due to a large thrombus in the Left coronary sinus of valsalva.
2021
Background Masses in the ascending aorta are an uncommon source of coronary embolism: thrombi located on atherosclerotic aortic plaques are the most frequent cause. A floating thrombus, without evidence of ascending aortic pathology has rarely been reported Method We report a case of an unusual aortic route thromboembolism leading ST segment elevation Myocardial Infarction (STEMI). The patient was referred to the Hub Hospital to undergo urgent coronarography. The examination excluded atherosclerotic coronary arteries disease but an unusual persistence of contrast dye was found at the level of non-coronary sinus. The trans-esophageal echocardiography showed a mobile pedunculated echogenic ma…
Endograft repair of spontaneous infrarenal abdominal aortic dissection
2005
A 71-year-old man with a history of hypertension and a recent myocardial infarction experienced a sudden periumbilical and back pain. Abdominal tenderness was found at physical examination, with no changes in electrocardiogram and serial enzyme determinations. Computed tomographic angiography (CTA) showed a normal thoracic aorta, an infrarenal aortic dissection extending into the left common iliac artery and a contralateral iliac occlusive disease (A, Cover). Although antihypertensive therapy was administered, the patient had persistent pain; subsequently, he underwent endovascular repair with a bifurcated stent graft (Talent, Medtronic Ave, Santa Rosa, Calif) introduced via the left femora…
MDCT and virtual angioscopy in spontaneous aortocaval fistula
2007
Aortocaval fistula is a rare, less than 1%, but life threatening complication, of abdominal aortic aneurysm. Mortality is high but prompt recognition of the fistula can reduce mortality rate. The multidetector row CT (MDCT) findings in a 69-year-old patient with a complex medical history characterized by previous episodes of myocardial ischemia, is reported. MDCT shows an early homogeneous enhancement of the inferior vena cava, slightly dilated at the liver level and markedly narrowed above the renal vein due to aneurysm compression. The patient underwent to emergency laparotomy but died during surgery for cardiac arrest. MDCT allows a prompt recognition of the fistula and different compute…
Histamine release in mesenteric traction syndrome during abdominal aortic aneurysm surgery: prophylaxis with H1 and H2 antihistamines
2002
Objective and design: Mesenteric traction syndrome is described as sudden tachycardia, hypotension and flush. Among other etiological factors eventeration or mesenteric traction of the small intestine may cause histamine release from mesenteric mast cells. We hypothesized that mesenteric traction syndrome may be positively influenced by prophylactic antihistamine administration.¶Methods: Male patients (n = 17, ASA groups III-IV, 48–78 years old) were investigated in a randomised double blind study during elective abdominal aortic aneurysm (AAA) repair. Eight patients had pre-anaesthetic prophylaxis with dimetindene (H1-receptor antagonist) plus cimetidine (H2-receptor antagonist), 9 patient…
Transcatheter recanalisation and stenting of a closed ductus arteriosus in duct dependent lung perfusion
1998
In patients with the congenital cardiac malformation of tetralogy of Fallot, occasionally one pulmonary artery, usually the left, seems angiographically to be absent.1 This pulmonary artery is usually present, but discontinuous with the pulmonary trunk, having originally been supplied by a patent arterial duct. With closure of the duct, the receiving flow to that pulmonary artery is by small collateral vessels, which leads to reduced growth of the involved pulmonary vessels and impedes definite surgical repair. We report a case of a 2 day old, 1890 g, premature, cyanotic boy (oxygen saturation 82%) with tetralogy of Fallot, right sided aortic arch, and discontinuity between the pulmonary tr…
Early endovascular aneurysm repair after percutaneous coronary interventions
2015
Objective The objective of this study was to report long-term results of early endovascular aortic aneurysm repair after percutaneous coronary intervention (PCI). Methods This was a retrospective analysis of all patients presenting with abdominal aortic aneurysm and coronary artery disease treated during the same hospitalization by endovascular aortic aneurysm repair performed soon after PCI. Primary outcomes were perioperative mortality, perioperative complications, survival after treatment, and freedom from reintervention. Results A total of 20 patients were included, and all completed both procedures. No deaths or abdominal aortic aneurysm ruptures occurred between the PCI and the aortic…
Haemodynamic predictors of a penetrating atherosclerotic ulcer rupture using fluid-structure interaction analysis
2013
We present preliminary data on the flow-induced haemodynamic and structural loads exerted on a penetrating atherosclerotic aortic ulcer (PAU). Specifically, one-way fluid-structure interaction analysis was performed on the aortic model reconstructed from a 66-year-old male patient with a PAU that evolved into an intramural haematoma and rupture of the thoracic aorta. The results show that elevated blood pressure (117 mmHg) and low flow velocity at the aortic wall (0.15 m/s(2)) occurred in the region of the PAU. We also found a low value of time-averaged wall shear stress (1.24 N/m(2)) and a high value of the temporal oscillation in the wall shear stress (oscillatory shear index = 0.13) in t…
ALLOPURINOL BLOCKS AORTIC ANEURYSM IN A MOUSE MODEL OF MARFAN SYNDROME VIA REDUCING AORTIC OXIDATIVE STRESS
2022
ABSTRACTBackgroundIncreasing evidence indicates that redox stress participates in MFS aortopathy, though its mechanistic contribution is little known. We reported elevated reactive oxygen species (ROS) formation and NADPH oxidase NOX4 upregulation in MFS patients and mouse aortae. Here we address the contribution of xanthine oxidoreductase (XOR), which catabolizes purines into uric acid and ROS in MFS aortopathy.Methods and ResultsIn aortic samples from MFS patients, XOR protein expression, revealed by immunohistochemistry, increased in both the tunicae intima and media of the dilated zone. In MFS mice (Fbn1C1041G/+), aortic XOR mRNA transcripts and enzymatic activity of the oxidase form (X…
Geometric Analysis of Type B Aortic Dissections Shows Aortic Remodeling After Intervention Using Multilayer Stents
2020
Recently, multilayer stents for type B aortic dissections (TBAD) have been proposed to decrease false lumen flow, increase and streamline true lumen flow, and retain branch vessel patency. We aimed to provide a protocol with standardized techniques to investigate aortic remodeling of TBAD by multilayer flow modulators (MFM) in static geometric and hemodynamic analyses. Combining existing literature and new insights, a standardized protocol was designed. Using pre- and postoperative CT scans, geometric models were constructed, lumen dimensions were calculated, computational fluid dynamics (CFD) models were composed, and velocity and pressures were calculated. Sixteen TBAD cases treated with …