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Online Journal of Veterinary Research©
Volume 22 (2): 129-138, 2018.
Effect of artificial stenosis of abdominal aorta on blood flow velocity and systolic blood pressure in female Beagle dogs.
Latvia University of Agriculture, Faculty of Veterinary Medicine, Clinical Institute. Address - Helmana street 8, Jelgava, LV 3004, Latvia.
Mālniece A, Dūrītis I, Auzāns A, Drevinska K., Effect of artificial stenosis of abdominal aorta on blood flow velocity and systolic blood pressure in female Beagle dogs. Onl J Vet Res., 22 (2): 129-138, 2018. Changes in blood flow velocity and systolic blood pressure in female beagle dogs created by a stenotic segment of the posterior abdominal aorta are described. Polyester and polyurethane artificial blood vessel prostheses were implanted retro-peritoneally in nine 1 to 3 year-old female Beagle dogs. Ultrasound blood flow velocity, aortic diameter and systolic blood pressure were measured before and monthly for 6 months postoperatively. Pressure gradient (PG) and systolic pressure proximal to the stenosis were recorded. Blood flow proximal to the stenotic segment was 33.59 cm/s, but increased (P < 0.05) distally from the stenotic segment 6 months postoperatively from 79.81 to 91.97 cm/s. PG in the stenotic segment increased 11.02% and systolic blood pressure before the stenotic segment by 7.59%. There were negative correlations between blood flow velocity and diameter proximal to and in the stenosis but positive with abdominal aorta proximal to the stenosis (P < 0.001). Blood velocity, systolic pressure and PG were affected by changes in diameter of the abdominal aorta.
Key words: Doppler measurements, abdominal aorta stenosis, pressure gradient, canine model.