An electrocardiogram revealed definite hypertrophy of the right ventricle, atrial enlargement, and possible hypertrophy of the left ventricle. The catheter could not be advanced beyond the grossly ...

The left ventricular lead is inserted through the coronary sinus in the right atrium, then fed posteriorly toward the left ventricle. The indications for biventricular pacing are as follows: ...

Four young infants three, four, twenty and three days of age respectively were studied by selective cineangiography of the right ventricle. All had had cyanosis and dyspnea since birth. Contrast ...

A ventricular septal defect (VSD) occurs when there is direct communication between the left and right ventricles. This can be a congenital anomaly or acquired as a complication of a myocardial ...

The bicuspid valve separates the left atrium and left ventricle and prevents back flow of blood from the ventricle to the atrium. It likewise opens due to a build-up of pressure, this time in the ...

Tricuspid regurgitation is a condition that causes a heart valve to leak blood back into the right atrium of the heart. If left untreated, it can cause life threatening complications. Learn more.

Overall, implantation of the atrial shunt device led to improvements in various heart measurements compared with the sham treatment, such as reducing both the left ventricle (LV) end-diastolic ...

The electrical impulse travels through the AV node, to the bundle of His, then to the left and right bundle branches, and finally to the ventricular muscle. Abnormalities can occur anywhere on that ...

Hypoplastic left heart syndrome (HLHS) is one of the most serious congenital heart anomalies, with an incidence of about 0.016-0.036% in North America, and has a mortality of 100% if untreated ...