foramen ovale

Definition

An opening in the septum between the right and left atria of the fetal heart that normally closes after birth.

Etymology

Latin for "egg-shaped hole".

Example Sentences

• "The second point, as urged by Dr. Norman Chevere, "That a closed foramen ovale is not a proof in jurisprudence that a child has lived;" for in this case the occlusion must have existed long before birth."
• "If the blood entering the right atrium from the great veins contains more emboli, some of these may pass into the left atrium by way of the incompletely closed channel at the foramen ovale."
• "Thus in those conditions associated with obstruction to the right side of the heart, such as tricuspid atresia or pulmonary atresia with intactventricular^([sic]) septum, the foramen ovale is necessary to provide systemic blood flow."