Evaluation of aortic and pulmonary valves flow with pulsed-wave Doppler echocardiography in clinically normal dogs / Avaliação dos fluxos das valvas aórtica e pulmonar com ecocardiografia Doppler pulsátil em cães clinicamente sadios

AUTOR(ES)

Lilian Caram Petrus

DATA DE PUBLICAÇÃO

2006

RESUMO

The purpose of this study was the evaluation of aortic (AO) and pulmonary (Pul) valves flow for the qualitative (valvar insufficiency presence, characteristic of flow profile) and quantitative analysis, obtaining this way chocardiographic parameters as: peak (PV) and mean (MV) velocities, velocity-time integral (VTI), acceleration (AT) and ejection (ET) time, stroke volume (SV) and cardiac output (CO). Thirty dogs were studied, and to be considered normal, physical, laboratory, electrocardiographic, echocardiographic (uni and bidimensional mode) exams, torax radiographs, and measurement of the blood pressure were accomplished, and the following echocardiographic parameters were obtained: AO PV= 1,215 19,38 m/s; AO MV= 0,722 + 0,08206 m/s; AO VTI= 0,141 + 0,02426m; AO AT= 38,80 + 11,29 ms; AO ET= 197,9 + 24,77 ms; AO SV= 29,63 + 14,59 mL; AO CO= 2,940 + 1,260 L/ min.; Pul PV= 0,9457 + 0,1792 m/s; Pul MV= 0,632 + 0,09960 m/s; Pul VTI= 0,1267 + 0,02324 m; Pul AT= 70,97 + 18,87 ms; Pul ET= 203,7 + 28,98 ms; Pul SV= 28,52 + 17,96 mL; Pul CO= 3,056 + 1,546 L/ min. The variable heart rate had negative correlation with AO VTI, AO ET, Pul VTI, Pul AT, Pul ET, Pul SV, and the variable weight had positive correlation with AO VTI, AO AT, AO ET, AO SV, AO CO, Pul VTI, Pul ET, Pul SV, Pul CO, differently from the variable sex, that had no influence on the evaluated parameters. The comparation of aortic and pulmonary valves flow demonstrated AO PV and AO MV higher than Pul PV and Pul MV, respectively, AO VTI higher than Pul VTI, and Pul AT higher than AO AT. The statistical evaluation also showed a strong and positive correlation between AO SV and Pul SV and between AO CO and Pul CO.

ASSUNTO(S)

doppler echocardiography pulsed-wave doppler cães sadios healthy dogs doppler pulsátil ecocardiografia doppler

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