Search results for " aorta"
showing 10 items of 185 documents
Successful use of impella CP through femoral access in a patient with bilateral iliac and aortic endoprosthesis in the setting of cardiogenic shock
2019
We report the case of a 67-year-old male, with previous history of severe peripheral vascular disease (abdominal aorta aneurism and bilateral iliac stenosis) requiring the implantation of 3 endoprostheses 7 months ago (Figure 1(A)), and previous myocardial infarction 10 years ago. The left ventricular ejection fraction (LVEF) was preserved at last control (58%). The patient was referred for acute coronary syndrome complicated with pulmonary oedema and cardiogenic shock. Echocardiography showed a severe impairment of LVEF (18%) and the patient was transferred to cathlab for emergency percutaneous coronary intervention (PCI). Coronary angiography via right femoral 7Fr access showed a chronic …
Tissue and circulating miRNAs as biomarkers in bicuspid aortic valve disease.
2019
Recent data suggested that bicuspid aortic valve (BAV) with left-right (L-R), right-non coronary (R-NC) and left-non coronary (L-NC) cusp fusion represents distinct pathological entities1. The rate of aortic enlargement varies according to the pattern of cusps fusion, with faster rates of aortic sinus and ascending aortic dilatation associated with the L-R compared to R-NC and L-NC morphology. In our study, we sought to investigate the histological fea-tures of aneurysms associated to different BAV phenotypes and we looked for specific mi-croRNAs (miRNA) as biomarkers of medial degeneration severity in order to optimize surgi-cal indication and prevent catastrophic complications such as rup…
Noonan-Syndrom mit der ungew�hnlichen Kombination von hypertropher Kardiomyopathie, konnatal bikuspider Aortenklappe und Aortenisthmusstenose mit hyp…
2004
Das Noonan-Syndrom ist gekennzeichnet durch kraniofaziale Dysmorphien wie Ptosis der Augenlider, Pterygium colli und durch einen tiefen nuchalen Haaransatz, durch Skelettveranderungen wie Kleinwuchs, Klinodaktylie, Kiel- und Trichterbrust und durch Organfehlbildungen, hauptsachlich Herzfehler, seltener einer Retentio testis und Nierenfehlbildungen. Das Noonan-Syndrom weist ein ahnliches Erscheinungsbild auf wie das Ullrich-Turner-Syndrom. Im Gegensatz zu dieser Chromosomenaberration sind aber Patienten beiderlei Geschlechts betroffen, sie weisen einen unauffalligen Chromosomensatz (46, XX bzw. 46, XY) auf und sind zeugungsfahig. Bei etwa der Halfte der Patienten mit Noonan-Syndrom bestehen …
3-D image analysis of fluorescent drug binding
2004
Fluorescent ligands provide the means of studying receptors in whole tissues using confocal laser scanning microscopy and have advantages over antibody- or non-fluorescence-based method. Confocal microscopy provides large volumes of images to be measured. Histogram analysis of 3-D image volumes is proposed as a method of graphically displaying large amounts of volumetric image data to be quickly analyzed and compared. The fluorescent ligand BODIPY FL-prazosin (QAPB) was used in mouse aorta. Histogram analysis reports the amount of ligand-receptor binding under different conditions and the technique is sensitive enough to detect changes in receptor availability after antagonist incubation or…
3D segmentation of abdominal aorta from CT-scan and MR images
2012
International audience; We designed a generic method for segmenting the aneurismal sac of an abdominal aortic aneurysm (AAA) both from multi-slice MR and CT-scan examinations. It is a semi-automatic method requiring little human intervention and based on graph cut theory to segment the lumen interface and the aortic wall of AAAs. Our segmentation method works independently on MRI and CT-scan volumes and has been tested on a 44 patient dataset and 10 synthetic images. Segmentation and maximum diameter estimation were compared to manual tracing from 4 experts. An inter-observer study was performed in order to measure the variability range of a human observer. Based on three metrics (the maxim…
Systematische Analyse der Geometrie eines definierten Kontrastmittelbolus - Implikationen für die kontrastmittelverstärkte 3D-MR-Angiographie thoraka…
2005
Purpose: Little is known about the dispersion of a defined contrast bolus during its passage through the heart and pulmonary vasculature. The purpose of this study was to analyze factors influencing a defined contrast bolus for ce-MRA of thoracic vessels. Materials and Methods: For analysis of bolus geometry, an ECG-gated saturation-recovery Turbo-Flash sequence with a TI of 20 msec was used. It was acquired axially at the level of the pulmonary trunc, so that with one data acquisition a curve analysis was possible in the ascending and descending aorta, and in the pulmonary trunc. Twenty-nine patients received 3 ml of Gd-DTPA diluted with saline to a total of 20 ml. Contrast injection was d…
Ultrasonography in Heart Failure: A Story that Matters
2019
Abstract Heart failure (HF) is a clinical syndrome caused by structural and/or functional cardiac abnormalities, resulting in a reduced cardiac output and/or elevated intracardiac pressures at rest or during stress. It is the leading cause of hospitalization in Internal Medicine departments. This article aims at reviewing evidence of the importance of ultrasound in HF both for hospitalized patients and in the follow-up. Ultrasound may be used as a recovery monitoring instrument at the bedside and also as a global cardiovascular assessment tool for these patients. HF represents an exciting opportunity to create an integrative ultrasound approach in Internal Medicine and/or Geriatric departme…
Impiego della Cardio-TC in pazienti con aneurisma gigante dell'aorta ascendente
2014
Pastāvīgā elektrokardiostimulatora implantācijas indikāciju prognostiskie faktori pēc transkatetra aortas vārstuļa implantācijas
2016
Ievads. Vadīšanas traucējumi pēc transkatetra aortas vārstuļa implantācijas (TAVI) ir bieži sastopami. Ar izmantotu CoreValve protēzi pastāvīgā elektrokardiostimulatora (EKS) implantācija ir līdz 40%. 3. pakāpes atrioventrikulāra (AV) blokāde pēc TAVI ir viens no sinkopes un pēkšņas kardiālas nāves iemesliem, kuru var novērst savlaicīgi implantējot pastāvīgo EKS. Pētījuma mērķis. Novērtēt pastāvīgā EKS implantācijas biežumu pacientiem pēc TAVI procedūras, tā saistību ar iespējamām izmaiņām elektrokardiogrammā, klīniskajiem un ehokardiogrāfiskajiem faktoriem pirms TAVI. Materiāli un metodes. Viena centra pētījumā retrospektīvi tika analizēti 58 pacientu dati, kuriem laika posmā no 2010.gada …