Items tagged “cardiac”
75 results found


Article
Ventricular septal defect
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...
Article
Mustard repair
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...
Article
Right coronary artery
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...
Article
Arrhythmogenic right ventricular cardiomyopathy diagnostic criteria
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...
Article
Right atrial enlargement
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...
Article
Left atrial enlargement
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:...
Article
Left ventricular assist device (Doppler ultrasound)
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...
Article
Congestive hepatopathy
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...
Article
Uhl anomaly
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...
Article
Shmoo sign
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...
Article
Hemochromatosis (cardiac manifestations)
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...
Article
Innervation of the heart
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...
Article
Cardiac CT
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...
Article
Tricuspid valve stenosis
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...
Article
Crista terminalis
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...
Article
Moderator band
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...
Case
Arterial switch procedure

Diagnosis certain
Published 26 Oct 2014
86% complete
Annotated imageCT
Article
Septal bounce
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...
Case
Cardiac hemangioma

Diagnosis certain
Published 23 Oct 2014
95% complete
MRI
Case
Transcather aortic valve replacement (Medtronic CoreValve)

Diagnosis certain
Published 24 Oct 2014
85% complete
X-ray