ASD

ASD can refer to:A Scanner Darkly, a 1977 novel by Philip K. Dick, and basis for the 2006 film of the same name.Accredited Symbian Developer, a qualification for developers of software for Symbian OSAcute Stress Disorder, a psychiatric disorderAmerican School of Dubai, an educational institute located in Dubai, United Arab EmiratesAdaptive Software Development, a software development processAdjustable-speed drive used to control electrical engine's speednessAigle - Sepey - Diablerets, a Swiss mountain railwayAfter school detention, detention held after schoolAtrial septal defect, a medical condition affecting the heartAutism Spectrum Disorder, a disorder on the Autistic spectrumAllowable stress design, a structural design methodologyAndromeda Software Development, a Greek demogroup that won first place in Assembly 2005.Anchorage School District, the district of schools in Anchorage, AlaskaFirst 3 letters of home row keys on a QWERTY keyboard. Refer to ASDF (sequence of letters)Azimuthing stern drive, a drive/direction system for state of the art "tractor" tugboatsAutomatic Skip Driver/Device, a program in Microsoft Windows 98 and higher which is run to recover from a system crash and device failure.A typical Italian laugh, similar to lol, used in online gaming.
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ASD abbr. atrial septal defect ASD Atrial septal defect, see there [more]ASD - Community and Resources

Acronym for atrial septal defect.

A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD. ASDs constitute a major class of heart formation abnormalities present at birth (congenital cardiac malformations).  Normally, when clots in veins break off (embolize) , they travel first to the right side of the heart and, then to the lungs where they lodge. The lungs act as a filter to prevent the clots from entering the arterial circulation. However, when there is an ASD, a clot can cross from the right to the left side of the heart, then pass into the arteries as a paradoxical embolism. Once in the arterial circulation, a clot can travel to the brain, block a vessel there, and cause a stroke (cerebrovascular accident). Because of the risk of stroke from paradoxical embolism, it is usually recommended that even small ASDs be closed (repaired).

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