[Heart failure due to primary hypothyroidism. Case report and review].

Background: There are well-recognized relationships between thyroid hormones, heart and peripheral vascular system. Thyroid hormones have relevant actions on the heart and circulation, generate multiple effects including hemodynamic changes and exert mediated effects on cardiac cells through gene expression.

Clinical Case: We present a 64-year-old woman with diagnosis of dilated cardiomyopathy with reduced ejection fraction, in whom coronary disease was thought of as the most probable etiology by clinical antecedents but in the evolution, other possible etiologies were to appear.

[Subaortic membrane in adults. A brief review of literature apropos of one case].

A 54-year-old man, ex smoker with high blood pressure and a history of possible Wolff-Parkinson-White syndrome was admitted for presenting an episode suggestive of acute coronary syndrome with immediate syncope and left bundle branch block, while performing physical activity. Angioplasty and a drug-eluting stent were performed in the left circumflex artery. Subsequently, Doppler echocardiography disclosed an image suggestive of a subaortic membrane.

[Endomyocardial fibrosis associated to Antiphospholipid syndrome. Case report and review].

A 29-year-old man with a history of seizures, was admitted due to an episode of unconsciousness recovered and hypertension with renal disfunction. The electrocardiogram mimicked a hypertrophic cardiomyopathy, but, by Doppler echocardiography, this was discarded because it suggested endomyocardial fibrosis which was confirmed by cardiac magnetic resonance imaging with late enhancement. Since the episode of unconsciousness, brain imaging studies were performed showing vascular sequelae and microangiopathic lesions.

[Improvement in functional capacity after levothyroxine treatment in patients with chronic heart failure and subclinical hypothyroidism].

Aim: To assess whether levothyroxine treatment improves functional capacity in patients with chronic heart failure (New York Heart Association class i-iii) and subclinical hypothyroidism.

Methods: One hundred and sixty-three outpatients with stable chronic heart failure followed up for at least 6 months were enrolled. A physical examination was performed, and laboratory tests including thyroid hormone levels, Doppler echocardiogram, radionuclide ventriculography, and Holter monitoring were requested.