%0 Journal Article %T Echocardiographic Measurement of Systolic Time Intervals in Healthy Great Dane Dogs %J Iranian Journal of Veterinary Surgery %I Iranian Veterinary Surgery Association (IVSA) %Z 2008-3033 %A Rajabioun, Masoud %A Vajhi, Alireza %A Masoudifard, Majid %A Selk Ghaffari, Masoud %A Sadeghian, Hakimeh %A Azizzadeh, Mohammad %D 2008 %\ 12/01/2008 %V 03 %N 4 %P 57-66 %! Echocardiographic Measurement of Systolic Time Intervals in Healthy Great Dane Dogs %K echocardiography %K Systolic time intervals %K Great Dane %K M-mode %K Pulsed- wave doppler %R %X Objective- To determine the range of systolic times intervals using Pulsed-wave Doppler and m-mode echocardiography in normal, healthy Great Dane dogs. Design- Descriptive study. Animals- Thirty healthy Great Dane dogs. Procedures- This study examined 30 clinically healthy Great Dane dogs by the two-dimensional, M-mode and Pulsed-wave Doppler echocardiography. The dogs were awake and unsedated. The following parameters were measured on the both Pulsed-wave Doppler and M-mode echocardiographic images: pre-ejection period (PEP), left ventricular ejection time (LVET), ratio of PEP to LVET (PEP/LVET) and the total electrical-mechanical systole (QAVC). Acceleration time of aortic flow (AT) was also measured by Doppler mode. Results- The following values have been acquired: PEP = 0.067 ± 0.010 s; LVET = 0.188 ± 0.011 s; QAVC = 0.254 ± 0.016 s and PEP/LVET = 0.354 ± 0.054 measured by Mmode echocardiography and PEP = 0.062 ± 0.009 s; LVET = 0.193 ± 0.007 s; QAVC = 0.256 ± 0.011s; PEP/LVET = 0.323 ± 0.051 and AT = 0.080 ± 0.107 s measured by Doppler echocardiography. Conclusion and Clinical Relevance- On Doppler mode, there was a significant correlation between the body weight and PEP and PEP/LVET. M-mode echocardiography showed significant correlation between the body weight and body surface area and QAVC. Results of this study revealed the importance of determination of breed-specific echocardiographic parameters and indices, and evaluating of measured values with range using same method for accurate diagnosis. %U https://www.ivsajournals.com/article_3166_a9197fd6995f931ace28eb3d1d54ebd7.pdf