QRS prolongation is associated with associated with adverse cardiac remodeling in hypertrophic cardiomyopathy.

Background: Signal-averaged electrocardiogram (SAECG) records myocardial depolarization, and can detect inhomogeneous/slow conduction in fibrotic myocardium, which promotes reentrant ventricular arrhythmias (VAs). Hypertrophic cardiomyopathy (HCM) is associated with a high prevalence of cardiac fibrosis and VAs, but abnormal SAECG has low predictive power for VAs. We hypothesized that HCM-specific structural/electrical remodeling underlies this result.

Can Milking-Like Effect Be the First Clue of a Ventricular Free Wall Rupture?

Ventricular free wall rupture (VFWR) is a catastrophic complication of myocardial infarction that poses an imminent surgical emergency. Early recognition is essential as it can expedite the process for a life-saving surgical intervention. We present a case of an acute left VFWR resulting from an underlying myocardial infarction which showed a "milking-like effect" during diagnostic angiography.

Spontaneous Multivessel Coronary Spasm During Diagnostic Coronary Angiography.

Acute vasospastic angina, formerly known as Prinzmetal angina, is characterized by transient electrocardiographic changes that are not related to exertion. Its atypical presentation makes it difficult to establish the diagnosis, so it is probably underrecognized and therefore mismanaged. We treated a 49-year-old woman who presented with a 2-day history of chest pain associated with palpitations.

A Growing Two-Decade-Old True Left Ventricular Aneurysm: A Case Report.

Left ventricular aneurysms (LVA) occur after an infarcted area of the myocardium necrotizes, fibroses, and expands, forming a dyskinetic cavity. Most ventricular aneurysms are asymptomatic and go unrecognized unless found incidentally. Symptoms commonly reported include angina, heart failure, syncope, and even sudden cardiac death.

Anomalous Origin of the Right Coronary Artery From the Ascending Aorta Above the Left Sinus of Valsalva.

Congenital anomalous origin of the coronary arteries is a rare but well-described cause of myocardial ischemia and sudden cardiac death. Anomalous origin of the right coronary artery from the ascending aorta is an extraordinarily rare occurrence. We report a case of anomalous origin of the right coronary artery from the ascending aorta posteriorly above the left sinus of Valsalva found during coronary angiography for evaluation of newly diagnosed cardiomyopathy.