ostium secundum

Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to ostium secundum: Ostium primum, sinus venosus, Septum secundum


 [os´te-um] (L.)
an opening or orifice. adj., adj os´tial.
ostium abdomina´le the fimbriated end of the fallopian tube.
ostium cardi´acum the orifice between the esophagus and the stomach.
coronary ostium either of the two openings in the aortic sinuses that mark the origins of the left and right coronary arteries.
ostium inter´num ostium uterinum tubae.
ostium pharyn´geum the nasopharyngeal end of the eustachian tube.
ostium pri´mum an opening in the lower portion of the membrane dividing the embryonic heart into right and left sides. See also atrial septal defect and congenital heart defect.
ostium secun´dum an opening in the upper portion of the membrane dividing the embryonic heart into right and left sides, appearing later than the ostium primum. See also atrial septal defect and congenital heart defect.)
tympanic ostium (ostium tympa´nicum) the opening of the eustachian tube on the carotid wall of the tympanic cavity.
ostium u´teri the external opening of the cervix of the uterus into the vagina.
ostium uteri´num tu´bae the uterine end of the fallopian tube; the point where the cavity of the tube becomes continuous with that of the uterus.
ostium vagi´nae the external orifice of the vagina.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

in·ter·a·tri·al fo·ra·men se·cun·'dum

a secondary opening appearing in the upper part of the septum primum in the sixth week of embryonic life, just before the closure of the interatrial foramen primum.
Farlex Partner Medical Dictionary © Farlex 2012

ostium secundum

An opening in the higher part of the septum of the atria of the embryonic heart. This becomes the foramen ovale and closes shortly after birth.
See also: ostium
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
En el ecocardiograma se informo una comunicacion interauricular de tipo ostium secundum de 5 mm de diametro, sin repercusion hemodinamica, y buena funcion biventricular sin signos de hipertension pulmonar.
The most frequent type is in the ostium secundum location, which is commoner in females with a sex ratio of at least 2:1 (5).
This report describes a patient with coarctation of the aorta associated with a bicuspid aortic valve, aortic root dilatation, non coronary sinus of Valsalva aneurysm and a ostium secundum atrial septal defect who suffered a bacterial endocarditis.
Among the common congenital acynotic heart diseases, ASDs are anatomically classified into four types: 1) Ostium secundum (85%), 2) Ostium primum (10%), 3) Sinus venosus (5%), and 4) Coronary sinus defects (rare).
She was investigated and her 2D Echo revealed E/o 24mm ostium secundum atrial septal defect with left to right shunt and grade I tricuspid regurgitation.
All patients with isolated atrial septal defect (ostium secundum, ostium primum and sinus venosus with or without partial anomalous pulmonary venous connection) were included.
The current study reviewed data of 84 patients who had undergone surgical repair of ASD, including the three major forms: ostium primum, ostium secundum and sinus venosus (with or without partial anomalous pulmonary venous connection or PAPVD).
Anatomically, atrial septal defects are classified into three main categories: ostium secundum, ostium primum, and sinus venosus defects.
Tambien, se practico un ecocardiograma con hallazgos de ductus arterioso persistente reverso, agenesia de la arteria pulmonar derecha y ostium secundum pequeno.
A secundum atrial septal defect is a true defect and the least severe, usually bordered by the edge of the fossa ovalis and the exposed circumference of ostium secundum. (16) The shape of the defect varies from circular to oval.
[1] There is an association between MVP and other congenital heart diseases such as ostium secundum atrial septal defect, hypertrophic cardiomyopathy, Marfan's syndrome, Ebstein's anomaly and Wolf Parkinson White (WPW) syndrome, although these are rare occurrences.