Vascularização arterial dos cornos uterinos em gatas gestantes sem raça definida (Felis catus Linnaeus, 1758) Arterial vascularization of the uterine horns in pregnant cross breed cats (Felis catus Linnaeus, 1758)

Abstract The arterial vascularization of the uterine horns in 24 pregnantcross breed cats were studied. In 20 animals, with gestation between7 and 9 weeks, the abdominal aorta was injected with Neoprenelatex 650 solution associated with bario sulphate 1004. The X-raywere taked and the animals were fixed in formaldehyde 10%aqueous solution and dissected to study the arterial distribution toparaplacentary and placentary zone. The Power DopplerEcocardiografh was realized in 4 animals, in paraplacentary zonesthe vessels resistence rate is smaller than trought uterine artery. Inall observations, the uterine artery is the principal vessel tovascularize the uterine horns, emitting 2 to 17 branches, with hightfrequence 5 to 12 branches, that wich running to paraplacentaryzone and/or placentary zone, forming the anastomotic arcade.There is not estatistical significative difference between branchesnumber from each region individually, however the X-ray analysesshowed a hight constrast concentration in regions of the placentaryzone. The ovaric artery has participation in arterial vascularizationto cranial extremity of the uterine horns, where it makes anastomosiswith branches from uterine artery.