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aortarctia

(ā″or-tark′sh(ē-)ă) [aort- + L. arctare, to narrow] Aortic narrowing. SEE: coarctation.

aortectomy

(ā″or″tek′tŏ-mē) [aort- + -ectomy] Excision of part of the aorta.

aortic arch syndrome

Partial or complete blockage of the main arteries that arise from the aortic arch. Diminished blood flow to the parts of the body supplied by those arteries may lead to stroke, retinal infarct, or arm pain and weakness. One cause of this rare syndrome is Takayasu’s arteritis.

aortic branch disease

Takayasu’s arteritis.

aortitis

(ā″or″tīt′ĭs) [aort- + -itis] Inflammation of the aorta. It occurs in patients with syphilis, autoimmune vasculitis, giant cell arteritis, Takayasu’s arteritis, or rheumatoid arthritis. Symptoms (fever, chills, myalgias, and malaise) are usually nonspecific.

aortocoronary

(ā″or″tŏ-kor′ŏ-ner-ē) [aort- + coronary] Pert. to both the aorta and the coronary arteries.

aortogram

(ā-or′tŏ-grăm″) [aort- + -gram] An image of the aorta obtained through radiography, computed tomography, or magnetic resonance imaging, usually after the injection of a contrast agent.

aortography

(ā″or″tog′ră-fē) [aort- + -graphy] Radiography of the aorta after injection of a contrast medium. aortographic (-grsf′ik), adj.

retrograde a. Aortography by injection of a contrast medium into the aorta via one of its branches, and thus against the direction of the blood flow.

translumbar a. Aortography by injection of a contrast medium into the abdominal aorta through a needle inserted into the lumbar area near the level of the 12th rib.

aortoiliac

(ā″or″tō-ĭl′ē-ak″) [aort- + iliac] Pert. to both the aorta and the iliac arteries.

aortopathy

(ā″or″top′ă-thē) [aorto- + -pathy] Any disease that affects the function or structure of the aorta.

aortostenosis

(ā″or″tō-stĕ-nō′sĭs) [aort- + stenosis] Aortic stenosis.

aortotomy

(ā″or″tot′ŏ-mē) [aort- + -tomy] Incision of the aorta.

AOTA

American Occupational Therapy Association.

AP, A-P

anteroposterior.

aP

acellular pertussis (vaccine).

APA

American Pharmaceutical Association; American Podiatry Association; American Psychiatric Association; American Psychological Association.

APACHE II

Acute Physiology and Chronic Health Evaluation, a classification system for severity of disease.

apallesthesia

(ă-pal″es-thē′zh(ē-)ă) [1an- + pallesthesia] Inability to sense vibrations.

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