[Collateral venous circulation].
D000368:Aged; D001775:Blood Circulation; D003097:Collateral Circulation; D006327:Heart Block; D014680:Veins; D014684:Venae Cavae / Q000502:physiology*
BLOOD CIRCULATION; HEART BLOCK/in aged; VENAE CAVAE/physiology
Circulacäo venosa colateral.