What is the interatrial septum?
FMA. 7108. Anatomical terminology. The interatrial septum is the wall of tissue that separates the right and left atria of the heart.
Is interatrial septum thin and muscular?
The interatrial septum is a thin structure best visualized by transesophageal echocardiography but is also readily seen on transthoracic imaging, particularly in the subcostal view. The interatrial septum should by interrogated with 2D, color Doppler, and if clinically indicated, agitated saline (“bubble”) contrast.
Is interatrial septum thick?
The IAS is thickest peripherally and gradually narrows toward the more centrally located fossa ovalis. A region of constant thickness is frequently present between the most peripheral aspect of the IAS and the fossa ovalis.
What does Lipomatous hypertrophy mean?
Lipomatous hypertrophy of the interatrial septum (LHIS) is a benign cardiac mass characterised as a non-encapsulated mass of fatty tissue that infiltrates the atrial septum first described in 1964.
What is the definition of Lipomatous hypertrophy?
Lipomatous hypertrophy of the IAS is defined as fatty infiltration ≫2 cm thick of the atrial septum [1]. It comprises of a noncapsulated, circumscribed, fatty mass first described in, 1964 [2].
What does Interatrial mean?
Medical Definition of interatrial : situated between the atria of the heart.
When does the interatrial septum form?
fifth week of gestation
The interatrial septum (Fig. 1) is the structure that divides the primary atrium into the right and left atrial chambers. Starting the fifth week of gestation, the septum primum begins to develop, growing toward the endocardial cushions.
What is the function of the interatrial septum?
cardiovascular system. …a partition known as the interatrial septum; the lower chambers, the ventricles, are separated by the interventricular septum. The atria receive blood from various parts of the body and pass it into the ventricles. The ventricles, in turn, pump blood to the lungs and to the remainder of the body …
What is IAS cardiac?
Atrial septal aneurysm is a rare cardiac abnormality that is usually detected during routine echocardiography or evaluation of ischemic stroke. It may be isolated or in the presence of other defects, most often patent foramen ovale.