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Related to Ostium secundum: Ostium primum, sinus venosus, Septum secundum


n. pl. os·ti·a (-tē-ə)
1. A small opening or orifice, as in a body organ or passage.
2. Any of the small openings or pores in a sponge, through which water is drawn in.

[Latin ōstium, door, opening, from ōs, mouth; see ōs- in Indo-European roots.]


n, pl -tia (-tɪə)
1. (Zoology) any of the pores in sponges through which water enters the body
2. (Zoology) any of the openings in the heart of an arthropod through which blood enters
3. (Biology) any similar opening
[C17: from Latin: door, entrance]


(ˈɒs ti əm)

n., pl. -ti•a (-ti ə)
a small opening or orifice of the body.
[1655–65; < Latin ōstium entrance, river mouth]
References in periodicals archive ?
Gore & Associates (Gore) revealed on Tuesday that it has received US Food and Drug Administration (FDA) premarket approval (PMA) for the GORE CARDIOFORM ASD Occluder for the percutaneous closure of ostium secundum atrial septal defects (ASDs), a hole in the wall (septum) between the two upper chambers of the heart (the atria).
The aortic valve was thickened and there was a large congenital atrial septal defect of the ostium secundum variety measuring 25 mm.
28% (7/25) neonates had congenital heart disease of which ostium secundum ASD was the most common type seen in 4 (57.14%) neonates (Table 6).
From her past medical history, we noticed an ostium secundum interatrial septal defect, with Eisenmeger syndrome, with severe secondary pulmonary hypertension, surgical overcome (this diagnosis was established 10 years ago, after clinical exam and echocardiography, at this severe hemodynamic stage, being omitted since then, even the patient had annually echocardiography).
Seventy-five percent of individuals have CHD, with ostium secundum atrial septal defect (60%) being the most common followed by ventricular septal defect.
Ostium secundum ASD and bilateral hydronephrosis were observed in echocardiography and renal ultrasonography.
CDC did not consider the following conditions to be birth defects: 1) persistent fetal circulation (747.83) or balanced autosomal translocation in a normal person (758.4), if they were the only codes in this range recorded for the discharge; and 2) patent ductus arteriosus (747.0) or ostium secundum type atrial septal defect (745.5; which includes patent foramen ovale as well as actual atrial septal defects) if they were the only birth defect codes for preterm infants or term infants aged <28 days.
Background: Transcatheter occlusion has been applied to treat ostium secundum atrial septal defect (OS ASD) since 1997.
Atrial septal defects are the most common congenital cardiac lesions after bicuspid aortic valve in adults; 75% of these are of the ostium secundum variety (5).
DIAGNOSIS: Arm-lead reversal; normal sinus right atrial enlargement and right ventricular enlargement suggesting an ostium secundum atrial septal defect; acute inferior myocardial infarction.
But it can also be found in ostium secundum and sinus venosus type defects.