[Findings of optical coherence tomography in saphenous grafts failure. Report of one case].

Atherosclerosis is the main cause of late saphenous vein graft (SVG) failure. Intracoronary images using optical coherence tomography (OCT) in addition to angiography allow a detailed analysis of the lesion beyond the degree of stenosis. We report a 67 years old diabetic male who underwent coronary surgery in 2009, consulting for an acute coronary syndrome.

[Prognostic value of the presence of a chronic total occlusion in patients with acute myocardial infarction].

Background: The presence of a chronic total occlusion (CTO) in a non-infarct-related artery in patients with acute myocardial infarction (AMI), may be a sign of bad prognosis.

Aim: To estimate the long-term survival of patients with AMI who were studied with coronarography during 2013-2014 who had one or more CTO in a non-infarct-related artery.

Material And Methods: Review of coronary angiograms performed between 2013 and 2014 to patients with an AMI.

[Long-term survival of patients with severe aortic stenosis undergoing transcatheter aortic valve implantation].

Background: Transcatheter aortic valve implantation (TAVI) is an effective and safe option for low, medium and high-risk patients with severe aortic stenosis (SAS).

Aim: To analyze the clinical results and long-term survival of TAVI in our center.

Material And Methods: Prospective analysis of 53 patients aged 73 ± 10 years with a Society of Thoracic Surgeons (STS) score of 7.

Age-related arrhythmogenesis on ascent and descent: "autonomic conflicts" on hypoxia/reoxygenation at high altitude?

Purpose: To discern whether arrhythmogenesis at high-altitude (HA) may differ depending on ascent or descent, as well as on age.

Methods: Male subjects (37.9±12.

Clustering of atrial fibrillation based on surface ECG measurements.

Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical research. In particular, the study of AF types or sub-classes is a very interesting research topic. In this paper we present a preliminary study to find sub-classes of AF from real 12-lead ECG recordings using k-means and hierarchical clustering algorithms.