Items tagged “fetal echo”
6 results found
Article
Aorto-ventricular tunnel
Aorto-ventricular tunnel (AVT) is an extremely rare form of congenital heart disease, representing an anomalous extracardiac communication between the ascending aorta and the left or right ventricles.
Terminology
In most cases the anomalous communication is between the aorta and the left ventr...
Article
Wolff-Parkinson-White syndrome
The Wolff-Parkinson-White syndrome describes paroxysmal tachydysrhythmias in the presence of a specific accessory pathway which allows direct electrical connection between the atria and ventricles, which usually exclusively occurs via the atrioventricular (AV) node. The accessory pathway is usua...
Article
Fetal ventricular tachycardia
A rare entity, fetal ventricular tachycardia presents with a rapid ventricular rate exceeding, and occurring independently from, the atrial rate. The ventricular rate is typically over 180 beats per minute 1. Atrioventricular dissociation is characteristic; two separate pacemakers dictate the a...
Article
Fetal tricuspid regurgitation
Tricuspid regurgitation (TR) (also known as tricuspid insufficiency) is a common finding in imaging of the fetus. Tricuspid regurgitation represents the abnormal backflow of blood into the right atrium during right ventricular contraction due to valvular leakage (i.e. it is a valvulopathy).
Ep...
Article
The crisscross sign
The crisscross sign is a fetal ultrasound sign that describes the normal relationship between the ventricular outflows tracts of the fetal heart. The left ventricular outflow tract (LVOT); represented by the take-off of the aorta (Ao) from the left ventricle, is perpendicular (90o) to the right ...
Article
Myocardial performance index
Myocardial performance index, also known as Tei index was introduced in 1995 by Tei et al 1. It gives information about global ventricular function 2.
It is calculated by dividing sum of isovolumetric contraction time (IVCT) and isovolumetric relaxation time (IVRT) with ejection time (ET), i.e....
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