Myocarditis and Eosinophilia: Three Cases of Hypereosinophilic Syndrome and Myocarditis.

Eosinophilic infiltration is a rare and underrecognized cause of myocarditis associated with prolonged eosinophilia. Before advanced imaging and routine biopsy, patients were diagnosed with an idiopathic cardiomyopathy with subsequent diagnosis made on autopsy. We present 3 cases of eosinophilic myocarditis diagnosed by cardiac biopsy classified as hypereosinophilic syndrome.

Initiation of ivabradine in cardiogenic shock.

Aims: Ivabradine is a selective sinus node inhibitor indicated in patients with symptomatic chronic heart failure on stable guideline-recommended heart failure therapy including appropriate doses of beta-blockers. The use in cardiogenic shock remains off label and has been considered a contraindication due to the theoretical risk of attenuating compensatory tachycardia. Tachycardia, especially in the context of inotropic therapy, may be deleterious, resulting in increased myocardial oxygen consumption and reduction in diastolic filling.

A case of hypertensive emergency, primary hypothyroidism and large pericardial effusion with early tamponade.

Thyroid hormones and the cardiovascular system are strongly intertwined with known risk of coronary disease, atrial fibrillation, and cardiomyopathy. Pericardial effusions are commonly seen in cases of severe hypothyroidism, however large to massive pericardial effusions with cardiac tamponade are exceptionally rare. We report a case of a patient presenting with hypertensive emergency and a concomitant diagnosis of primary hypothyroidism with a large pericardial effusion and early echocardiographic features of tamponade.

A Case of Palpitations Due to T-Wave Oversensing Caused by Sacubitril/Valsartan.

A 58-year-old man with previous mitral/aortic mechanical-valve replacement, aortic root repair, and coronary disease developed severe left-ventricular dysfunction following AV-node ablation/single-chamber pacemaker implantation for management of atrial fibrillation. He then underwent an upgrade to cardiac resynchronization therapy with a defibrillator. To manage his heart failure better, angiotensin-receptor blocker therapy was changed to sacubitril/valsartan, after which symptomatic palpitations with T-wave oversensing occurred.

Cardiac outcomes in adults with supravalvar aortic stenosis.

Aims: Supravalvar aortic stenosis is a rare form of left ventricular outflow tract obstruction that is often progressive in childhood. Little data are available on outcomes in the adult population. Our aim was to define cardiac outcomes in adults with supravalvar aortic stenosis.