Pedro Marcos-Alberca

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Assessment of intramyocardial perfusion by contrast echocardiography is a promising new technique that allows to obtain quantitative parameters for the assessment of ischemic disease. In this work, a new methodology and a software prototype developed for this task are presented. It has been validated with Coherent Contrast Imaging (CCI®) images acquired(More)
AIMS Data regarding the effects of TAVI on LV after are scarce and conflicting results have been reported immediately after aortic valvuloplasty. This study aimed to determine the acute haemodynamic effects of transcatheter aortic valve implantation (TAVI) in left ventricle (LV) diastolic performance, immediately after aortic valvuloplasty and prosthesis(More)
Strain Rate (SR) Imaging is a recent imaging technique that provides information about regional myocardial deformation by measuring local compression and expansion rates. SR can be obtained by calculating the local in-plane velocity gradients along the ultrasound beam from Doppler Tissue velocity data. However, SR calculations are very dependent on the(More)
BACKGROUND Preliminary experimental data have shown a nonuniform distribution of myocardial velocities (MVs) across the myocardial wall in normal conditions. However, after ischemic damage to the myocardium, a different pattern of reduction in the myocardial layers has been reported. The aim of this study is to analyze the spatial distribution of MVs and(More)
A 67 year-old asymptomatic patient was referred to our echo-lab because of hypertension. Transthoracic 2D-echocardiogram showed a non-prolapsing ovoid mass attached to the left side of the interatrial septum. Transesophageal echocardiography evidenced an ovoid cavitated mass with internal areas of calcification. Color Doppler revealed flow inside the(More)
A 88-year-old woman with a permanent VDD pacemaker and severe aortic stenosis underwent elective transcath-eter aortic valve replacement because of high surgical risk (logistic Euroscore of 35.3%). Aortic valve area was 0.5 cm 2 , mean gradient was 86 mm Hg, and left ventricular ejection fraction was 64% on transthoracic echocardiography. Aortic annulus(More)
A n 85-year-old woman presented to the emergency department with symptoms of acute heart failure. The patient had an extensive cardiac history, including a bioprosthetic mitral valve replacement (Mosaic II, number 2) in 1994 and a transcatheter transapical Edwards SAPIEN THV 23 mitral valve implant within the mitral bioprosthesis (valve-in-valve(More)
A 66-year-old woman suffering from acute de-compensated heart failure was admitted into our hospital. She had undergone aortic root and valve replacement with the Bentall-de Bono continuous-suture wrap-inclusion technique because of acute type A aortic dissection 14 years before. Physical examination showed signs of congestive heart failure, a bounding(More)
A n 84-year-old woman was admitted to our institution for transapical aortic valve implantation (TAVI) because of severe aortic stenosis coexisting with high-risk clinical conditions. She had a past history of type 2 diabetes mellitus, hypertension, intrinsic asthma, moderate to severe chronic renal insufficiency (Modification of Diet in Renal Disease(More)
The prognosis of patients with coronary artery disease largely depends on the presence of a collateral circulation. The location and extent of the collateral circulation is highly variable and these parameters determine whether or not ischemic symptoms occur and whether left ventricular contractility is abnormal. The collateral circulation is generally(More)