16 documents found, page 1 of 2

Microvascular Dysfunction Is Associated With Impaired Myocardial Work in Obstru...

Background Two-dimensional speckle tracking echocardiography has been shown to correlate with microvascular dysfunction, a hallmark of hypertrophic cardiomyopathy (HCM). We hypothesized that there is an association between myocardial work and left ventricular ischemia, with incremental value to global longitudinal strain, in patients with HCM. Methods and Results We performed a prospective assessment of patient...

Associations Between Perfusion Defects, Tissue Changes and Myocardial Deformati...

Background: Microvascular dysfunction is an often overlooked feature of hypertrophic cardiomyopathy (HCM). Our aim was to assess the association between microvascular dysfunction, wall thickness, tissue characteristics and myocardial deformation in HCM patients, by analyzing individual myocardial segments. Methods: Prospective assessment including cardiac magnetic resonance to assess wall thickness, T1 and T2 m...

Nationwide Access to Endovascular Treatment for Acute Ischemic Stroke in Portugal

Introduction: Since the publication of endovascular treatment trials and European Stroke Guidelines, Portugal has re-organized stroke healthcare. The nine centers performing endovascular treatment are not equally distributed within the country, which may lead to differential access to endovascular treatment. Our main aim was to perform a descriptive analysis of the main treatment metrics regarding endovascular ...

The Impact of Ischemia Assessed by Magnetic Resonance on Functional, Arrhythmic...

Aims: The aim of the study is to investigate the association between the degree of ischemia due to coronary microvascular dysfunction (CMD) and the left ventricular (LV) tissue characteristics, systolic performance, and clinical manifestations in hypertrophic cardiomyopathy (HCM). Methods and Results: This prospective study enrolled 75 patients with HCM without obstructive epicardial coronary artery disease. Ea...

Pseudo-aneurisma traumático da artéria carótida interna como causa de epistaxis

O pseudo-aneurisma traumático da carótida interna é uma das causas raras de epistaxis, que pode ser fatal se não diagnosticado e tratado atempadamente. Os autores relatam o caso clínico de um jovem com pseudo-aneurisma da carótida interna que se apresentou com epistaxis grave, 11 anos após traumatismo crânio-facial. Foi feita embolização do pseudo-aneurisma com coils, com sucesso e sem sequelas neurológicas.

Rinosinusites na prática clínica: guia de diagnóstico e tratamento

Patologia naso-sinusal

An alternative explanation of the origin of the signal in diffusion-weighted MRI

I formulated an alternative explanation for the origin of the signal in diffusion-weighted MRI (DWI) and tested it in a simple experimental model using gelatin. My findings indicate that the signal in DWI is influenced by the passage of water from the sol to the gel state, independently of the presence of cell structures or membrane-dependent diffusion.

The application of the endovascular prosthesis (stent).

We report two cases of symptomatic internal carotid stenosis treated by vasoplasty and stent placement in two male patients aged 57 and 64 years, one who had been suffering from transient ischemic events and the other had had a recent cerebral infarction with hemiparesis. The treatment sessions took place without complications. We discuss the choice of simultaneous vasoplasty and stent placement, some of the cu...

Cerebral toxoplasmosis in AIDS patients, CT and MRI images and differential dia...

Cranial computed-tomographies (CT) and magnetic resonance imaging (MRI) of 14 patients with AIDS and central nervous system toxoplasmosis (CNST) were reviewed. In spite of the low specificity of CT and MRI findings in CNS mass lesions of AIDS patients, there are some features which have been observed as more typical of CNST, namely: 94.9% of the lesions were round shaped and 94.5% had ring or nodular enhancemen...