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Medical Abbreviations. The Letter A. a. before preceding in time; earlier than. A & P. anterior and posterior pertaining to the front and back sides. a.m. antemeridiem being before noon. AV; A-V.
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Medical Abbreviations The Letter A
a before • preceding in time; earlier than
A & P anterior and posterior pertaining to the front and back sides
a.m. antemeridiem being before noon
AV; A-V atrioventricular Located between an atrium and ventricle of the heart
AB ab abortion The expulsion of a nonviable fetus
Ab antibody any of the body immunoglobulins that are produced in response to specific antigens and counteract their effects.
ABD abd abdomen The part of the body located between the thorax and the pelvis
a.c. before meals • Preceding the portion of food taken at one time to satisfy appetite
ACVDacute cardiovascular diseasesharp or severe heart and vessel disease
Ad lib as desired longing, craving
A.D. aurd right ear • The characteristic vertebrate organ of hearing and equilibrium; a sound collecting device.
ARDS adult respiratory distress syndrome An adult disease involving pain while breathing.
ADHD attention deficit hyperactivity disorder An inability to be attentive; excessive or pathologically active.
AFP alpha-fetoprotein first fetal protein
AHD arteriosclerotic heart disease a hardening of the arteries disease
AIDS acquired immune deficiency syndrome A condition of acquired immunological deficiency associated with infection of the cells of the immune system by a retrovirus.
A/KA above knee amputation to cut or lop off; to cut (knee) from the body
AMA against medical advice Not to follow the suggestions of a physician
A.S. aur s left ear The characteristic vertebrate organ used in hearing and equilibrium; A sound collecting device.