BACKGROUND Left coronary artery arising from the right sinus of Valsalva is an uncommon congenital coronary anomaly that seems to be associated with sudden death in young patients. CASE PRESENTATION We report a case of cardiac arrest in a 59-year-old patient after sexual intercourse and Sildenafil ingestion. A coronary arteriography and an angiographic computed tomography scan subsequently re...

Bradycardia and transient asystole are well-described sequelae of a myriad of neurologic insults, ranging from focal to generalized injuries. Increased vagal tone also predisposes many individuals, particularly adolescents, to transient neurally mediated bradyarrhythmia. However, prolonged periods of sinus arrest without junctional or ventricular escape are quite rare, even after significant ne...

SUMMARY Thirty-one patients with symptomatic sinus node dysfunction were evaluated with electrocardiograms, Holter monitor recordings, exercise, isoproterenol infusions, atropine administration, Valsalva maneuvers, carotid sinus massage, and overdrive pacing. Four basic clinical subsets were recognized: (1) carotid sinus hypersensitivity (2) bradyeardia-tachyeardia syndrome, (3) episodic sinus ...

Lateral medullary syndrome (LMS) is an ischemic disease of the medulla oblongata, which involves the territory of the posterior inferior cerebellar artery. Lateral medullary syndrome is often missed as the cause of autonomic dysregulation in patients with recent brain stem stroke. Due to the location of the baroreceptor regulatory center in the lateral medulla oblongata, patients with LMS occas...

A73-year-old man with mild coronary artery disease and a dilated cardiomyopathy presented to the emergency room with a hemodynamically stable wide-QRS tachycardia. His 12-lead ECG revealed episodes of ventriculoatrial block, and a diagnosis of ventricular tachycardia (VT) was made (Figure 1). Intravenous procainamide restored sinus rhythm. Tachycardia recurred, and a second bolus of intravenous...

OBJECTIVE To investigate the incidence of sinus node disease after pacemaker implantation for exclusive atrioventricular (AV) block. DESIGN 441 patients were followed after VDD (n = 219) or DDD pacemaker (n = 222) implantation for AV block over a mean period of 37 months. Sinus node disease and atrial arrhythmias had been excluded by Holter monitoring and treadmill exercise preoperatively in ...

Noncompaction of the ventricular myocardium is a rare congenital cardiomyopathy resulting from an arrest in normal endomyocardial embryogenesis. This disease is characterized by numerous and prominent trabeculations and deep intertrabecular recesses. It may be isolated or associated with other congenital heart diseases. The disorder is clinically accompanied by depressed ventricular function, s...