Key result
Pulsed-wave Doppler echocardiography established reference values for left ventricular diastolic parameters in healthy dogs, which were influenced by heart rate, age, and body weight.
Why the study?
What are the reference values for left ventricular diastolic echocardiographic parameters in healthy dogs measured by pulsed-wave Doppler?
Observational (n=40)
What are the reference values for left ventricular diastolic echocardiographic parameters in healthy dogs measured by pulsed-wave Doppler?
This study provides reference values for left ventricular diastolic parameters in healthy dogs using pulsed-wave Doppler, noting the influence of heart rate, age, and body weight.
Establishes normative diastolic parameters in healthy dogs; leaves open translation to clinical practice pending validation in diseased populations.
Left ventricular diastolic dysfunction plays an important role on heart failure progression. In order to obtain additional reference values of left ventricular diastolic parameters and investigate influence of common variables, peak E wave (peak E), peak A wave (peak A), E/A ratio (E/A), E wave deceleration time (EDT) and isovolumic relaxation time (IRVT) were studied in 40 clinically healthy dogs, by pulsed wave Doppler. The following values were obtained: peak E = 0.747 ± 0.117 m/s, peak A = 0.487 ± 0.062 m/s, E/A = 1.533 ± 0.198, EDT = 88.7 ± 9.2 ms and IRVT = 0.080 ± 0.009 s. Some parameters were influenced by heart rate (peak E, peak A and IRVT), by age (peak A and E/A) and by body weight (TRIV). Gender influence was absent. Values obtained can be used as reference for canine specimens but its interpretation should consider on the influence of related variables.
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Pereira et al. (2009) conducted an observational in Healthy dogs (n=40). Pulsed-wave Doppler echocardiography was evaluated on Left ventricular diastolic parameters (peak E, peak A, E/A, EDT, IRVT). Pulsed-wave Doppler echocardiography established reference values for left ventricular diastolic parameters in healthy dogs, which were influenced by heart rate, age, and body weight.
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