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Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart.Some flow is a normal condition both pre-birth and immediately post-birth via the foramen ovale; however, when this does not naturally close after birth it is referred to as a patent (open) foramen ovale (PFO).
The ostium primum atrial septal defect is a defect in the atrial septum at the level of the tricuspid and mitral valves. This is sometimes known as an endocardial cushion defect because it often involves the endocardial cushion, which is the portion of the heart where the atrial septum meets the ventricular septum and the mitral valve meets the tricuspid valve.
The Australian Cyber Security Centre (ACSC) is an agency within the ASD. The unit was established in 1947 by executive order as the Defence Signals Bureau within the Department of Defence, and underwent several name changes until its current name ASD was adopted in 2013. ASD was converted to a statutory body by the Intelligence Services Act 2001.
A sinus venosus atrial septal defect is a type of atrial septal defect primarily associated with the sinus venosus.. They represent 5% of atrial septal defects. [1]They can occur near the superior vena cava or inferior vena cava, but the former are more common.
The ASD(SO/LIC) is supported in his/her work by three Deputy Assistant Secretaries of Defense: DASD, Special Operations and Combating Terrorism; DASD, Partnership Strategy and Stability Operations; DASD, Counternarcotics and Global Threats; Executive Director for the Office of Information Operations Policy
The Australian Cyber Security Centre (ACSC), the successor to the Cyber Security Operations Centre, is the Australian Government's lead agency for cyber security.The ACSC is part of the Australian Signals Directorate and is based at the Australian Security Intelligence Organisation headquarters in Brindabella Business Park in Canberra.
The American School of Doha (ASD) is located in Doha, Qatar. The school was founded in 1988 by United States Ambassador Joseph Ghougassian to serve the needs of the American community in Qatar. Sponsored by the US Embassy, it operated until 1997 as the American International School ( AIS ).
Andros Town Airport or Andros Town International Airport (IATA: ASD, ICAO: MYAF) is an airport serving Andros Town on Andros Island in the Bahamas. It is also known as Fresh Creek Airport . [ 1 ]