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OJVRTM
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.
Aija Mālniece DVM,
Ilmārs Dūrītis, DVM PhD, Alberts Auzāns DVM PhD,
Kristīne Drevinska DVM.
Latvia University of Agriculture, Faculty of
Veterinary Medicine, Clinical Institute. Address - Helmana street 8, Jelgava, LV
3004, Latvia.
ABSTRACT
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.