ostium

(redirected from Ostium primum)
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ostium

[′äs·tē·əm]
(biology)
A mouth, entrance, or aperture.
References in periodicals archive ?
Ostium primum defect: factors causing deterioration in the natural history.
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).
The mitral cleft is frequently associated with other endocardial cushion defects, such as ostium primum atrial septal defect, atrioventricular septal defect (7).