General Neurology
Presbyosmia
May. 14, 2024
This is an image preview.
Start a Free Account
to view the full image.
-
Nearly 3,000 illustrations, including video clips of neurologic disorders.
-
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
-
Full spectrum of neurology in 1,200 comprehensive articles.
-
Listen to MedLink on the go with Audio versions of each article.
Bilateral subclavian steal with steno-occlusive disease of innominate and left subclavian arteries
Simplified schematic of the aortic arch and great vessels, showing typical collateral pathway to supply the right arm in the face of severe steno-occlusive disease of the innominate (brachiocephalic) artery and the left subclavian artery (light green boxes). Flow is reversed in both vertebral arteries, and consequently blood is “stolen” from the vertebrobasilar circulation. Flow is reversed in the basilar artery. Flow may be antegrade or retrograde in the right common carotid artery but remains antegrade (and likely with increased flow) in the left common carotid artery. (Contributed and modified by Dr. Douglas Lanska. Greatly modified from original sketch in Owen E. A Manual of Anatomy for Senior Students. London and New York: Longmans, Green, and Co., 1890.)