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zematslēgkaula artērijas apzagšanas (subclavian steal) sindroms nozīmē, ka, ja prox a.subclavia sinistra daļa ir okludēta, tas var izraisīt asinsrites pārtraukumu vertebrālajā artērijā un kreisajā rokā:šajā gadījumā:1. asinis no labās vertebrālās artērijas nonāk kreisajā vertebrālajā artērijā, un pirms Vilīzija loka aizplūst uz kreiso roku2. asinis no kreisās kopējās miega artērijas sāk plūst uz kreisās rokas artērijām3. kreisā roka sāk saņemt asinsriti pa kolaterālēm no aorta loka
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