The Effects of Age and Heart Rate on Tricuspid Annular Motion Velocities in Healthy Nonsedated Cats

Abstract

Background: Age and heart rate have effects on myocardial velocities as assessed by color tissue Doppler imaging (TDI) in people. A similar phenomenon has been identified when left ventricular velocities are assessed in cats. To date, the effects of age and heart rate on tricuspid annular velocities of cats have not been assessed.Objectives: This study was designed to determine the relationships between age and heart rate and tricuspid annular velocities in cats as assessed by 2-dimensional (2D) color TDI.Animals: Fifty healthy nonsedated cats with age range from 3 months to 19 years old were studied. Methods: Tricuspid annular velocities were obtained with 2D color TDI. Effects of age and heart rate on tricuspid annular velocities were evaluated by simple linear regression. The strength of the linear relationship was determined by using coefficient of determination (R

Evaluation of the influence of age on pulmonary arterial pressure by use of right ventricular catheterization, pulsed-wave Doppler echocardiography, and pulsed-wave tissue Doppler imaging in healthy Beagles

“…The S' tricuspid wave is known to decrease in pulmonary hypertension, [50][51][52][53][54][55][56] but to stay unchanged in aged clinically normal humans [5][6][7][8] and in aged cats. 61,62 Our study confirms the lack of influence of age on myocardial systolic velocity of the tricuspid annulus.…”

Pulsed tissue Doppler imaging of the left ventricular septal mitral annulus in healthy dogs

“…This may have resulted in the inadvertent inclusion of animals with subclinical cardiac disorder in normal dogs. TDI variables have been reported to be less affected by certain factors like loading condition, age, and heart rate [8]. However, the effect of bodyweight and breed on TDI values is unclear [4].…”