Items tagged “cardiac”

Ventricular septal defects (VSD) represent defects in the interventricular septum that allow a hemodynamic communication between the right and left ventricles. It typically results in a left-to-right shunt. Epidemiology They represent one of the most common congenital cardiac anomalies and may...

The Mustard repair is a technique to correct transposition of the great arteries (TGA), and involves: resection of atrial septum creation of an atrial baffle with a prosthetic material usually. 1,2 Rationale Transposition of the great arteries involves a discordance between the ventricles a...

The right coronary artery (RCA) is one of the two main coronary arteries that supply the heart with oxygenated blood. Gross anatomy Origin The right coronary artery (RCA) ostium arises from the right sinus of Valsalva, found between the aortic valve annulus and the sinotubular junction.  Co...

For the diagnosis of arrhythmogenic right ventricular cardiomyopathy (ARVC) to be made, patients must have either two major criteria, one major and two minor criteria, or four minor criteria. Major criteria global or regional dysfunction and structural alterations: severe dilatation of the ri...

Right atrial enlargement is less common, and harder to delineate on chest radiograph, than left atrial enlargement. Pathology Causes Enlargement of the right atrium can result from a number of conditions, including: raised right ventricular pressures pulmonary arterial hypertension cor pul...

Left atrial enlargement (LAE) may result from many conditions, either congenital or acquired. It has some characteristic findings on a frontal chest radiograph. CT or MRI may also be used for diagnosis. Clinical presentation An enlarged left atrium can have many clinical implications, such as:...

In patients with a left ventricular assist device (LVAD), spectral Doppler waveforms are altered due to continuous flow provided by the pump in the device: waveforms are monophasic with a constant antegrade flow and no flow below the baseline the waveform is typically parvus-tardus with a slow...

Congestive hepatopathy includes a spectrum of hepatic derangements that can occur in the setting of right-sided heart failure (and its underlying causes). If there is subsequent hepatic fibrosis the term cardiac cirrhosis may be used. The condition can rarely occur as a result of non-cardiac cau...

Uhl anomaly is an unusual cardiac disorder which affects the right ventricle where there is an almost complete absence of right ventricular myocardium, normal tricuspid valve, and preserved septal and left ventricular myocardium. Clinical presentation Presentation usually occurs in the neonata...

Shmoo sign refers to the appearance of a prominent, rounded left ventricle and dilated aorta on a plain PA chest radiograph giving the appearance of Shmoo, a fictional cartoon character in the comic strip Li'l Abner, which first appeared in 1948 5. This sign is indicative of left ventricular enl...

Cardiac involvement in hemochromatosis typically occurs with primary hemochromatosis, as the organ is usually spared in the secondary form of the disease. For a general discussion, and for links to other system specific manifestations, please refer to the article on hemochromatosis.  Epidemiol...

The heart has extrinsic and intrinsic innervation, which allows the heart to continue beating if its nerve supply is disrupted (e.g. in cardiac transplant). The extrinsic supply is from parasympathetic (from the vagus nerve) and sympathetic nerves from both the superficial and deep cardiac plex...

Computed tomography of the heart or cardiac CT is routinely performed to gain knowledge about cardiac or coronary anatomy, to detect or diagnose coronary artery disease (CAD), to evaluate patency of coronary artery bypass grafts or implanted coronary stents or to evaluate volumetry and cardiac f...

Tricuspid valve stenosis is a valvulopathy that describes narrowing of the opening of the tricuspid valve between the right ventricle and the right atrium. Epidemiology MS is seen more commonly in women and in countries, generally developing nations, where rheumatic fever is common 1,2. Clini...

The crista terminalis is a smooth muscular ridge in the superior aspect of the right atrium, formed following resorption of the right valve of the sinus venosus. It represents the junction between the sinus venarum, the "smooth" portion of the right atrium derived from the embryologic sinus veno...

The moderator band, also called the septomarginal trabecula, is a consistent structure in the morphologic right ventricle and can be helpful as a landmark in situations where the ventricles may be ambiguous (i.e. in some forms of congenital heart disease). The term "septomarginal" is descriptiv...

Septal bounce is a sign of ventricular interdependence on echocardiography, cardiac CT, and cardiac MRI, manifested by paradoxical interventricular septal movement during early diastole (i.e. initial septal movement towards and then away from the left ventricle) seen mainly in constrictive peric...