[Comparison of peak oxygen uptake and VE/VCO2 slope, between children with and without heart failure].

Unlabelled: Heart failure is a health problem associated with disability and mortality. Physicians may stratify the risk of adult patients with heart failure using a cardiopulmonary exercise testing. Until now, in childhood this evaluation has been poorly used.

[Hemorrhagic pericarditis and cardiac tamponade in systemic lupus erythematosus. A case report].

Systemic lupus erythematosus is a chronic inflammatory autoimmune disorder that can affect any organ or system. Although pericarditis is the most frequent cardiac manifestation of this entity, usually is not a life threatening situation. Pericardial effusion causing cardiac tamponade is a very rare complication in lupus, with an incidence less than 2%.

[Coronary physiology and its usefulness for the interventionist cardiologist: invasive measurement of coronary flow-pressure].

One of the most important limitations of coronary angiography is the inability to characterize the physiological significance of an intermediate coronary stenosis. Measuring coronary blood flow and pressure provides unique information that complements anatomic evaluation and facilitates decision-making in the cardiac catheterization unit. This review discusses the fundamental concepts of coronary physiology, methodology, and clinical applications of coronary and flow measurements.

Brain magnetic resonance imaging findings in patients with mitochondrial cytopathies.

Background: Mitochondrial cytopathies (MCs) are a heterogeneous group of clinical entities, some of which have classic phenotypes. Magnetic resonance imaging (MRI) has been reported to be helpful in the diagnosis of MC.

Objective: To correlate the most common brain MRI findings reported in patients with MC with the clinical findings in patients in different MC subgroups.

[Cardiac involvement in Kearns-Sayre syndrome].

The mitochondrial cytopathies or oxidative-phosphorylation diseases are a diverse group of disorders that result from the structural, biochemical, or genetic derangement of mitochondria. Because mitochondrial dysfunction can affect the most highly energy-dependent organs, cardiac involvement is frequent in these diseases. To identify the clinical features of Kearns-Sayre syndrome, an entity associated with this group of diseases, we evaluated cardiac structure and function in 5 patients with Kearns-Sayre syndrome and followed the clinical course of these patients for 5 years.

[Care for the cardiopathy patient after percutaneous coronary intervention].

At present, new indications and frontiers of interventional cardiology led to percutaneous treatment of a wide spectrum of patients who require myocardial revascularization. The physician must understand the potential benefits, procedural characteristics, and risks of percutaneous coronary intervention. In this paper, we review general concepts concerning coronary angioplasty.

Pheochromocytoma-induced acute pulmonary edema and reversible catecholamine cardiomyopathy mimicking acute myocardial infarction.

Acute noncardiogenic pulmonary edema and catecholamine-induced cardiomyopathy as the first presentations of pheochromocytoma are uncommon events, but usually rapidly fatal. A 36-year-old man presented acute pulmonary edema in a setting of hypertensive emergency after arthroscopy, later developing catecholamine-induced cardiotoxicity mimicking an acute myocardial infarction, with elevation of cardiac damage markers, normal coronary arteries, and with full recovery from electrical abnormalities. Magnetic resonance imaging revealed a right adrenal mass.

Multiple congenital coronary artery fistulae draining into the left ventricle.

Coronary artery fistula between a coronary artery and a cardiac chamber is a rare condition, especially when multiple fistulas communicate with the left ventricle. Herein we report a case of an elderly woman with multiple diffuse coronary artery-left ventricular fistulas diagnosed by angiography. Since the coronary artery-cardiac chamber communications were multiple and diffuse neither surgery nor transcatheter coil occlusion was considered in this case.