Korean J Vet Res > Volume 55(1); 2015 > Article
Korean Journal of Veterinary Research 2015;55(1):47-52.
DOI: https://doi.org/10.14405/kjvr.2015.55.1.47    Published online March 24, 2015.
Usefulness of ultrasound contrast media for cardiac output measurement with echocardiography
Je Woong Yun, Seong Chan Yeon, Hee Chun Lee
Research Institute of Life Sciences, Gyeongsang National University
Abstract
The purpose of this study was to determine if contrast media would enhance visualization of the endocardium for assessment of left ventricle (LV) function. In addition, differences between pre- and post-contrast evaluation for the cardiac output measurements including the modified Simpson's method and automated contour tracking (ACT) method were examined. Ten clinically healthy adult beagle dogs (three males and seven females) between 2~3 years old and weighing 6.6~10.8 kg were used. Echocardiographic examinations were performed to compare pre- and post-contrast LV endocardium visualization using a segmental scoring method. Two different methods for measuring cardiac output were also compared. LV visualization was significantly enhanced in post-contrast echocardiography (p < 0.01). Significant differences between pre- and post-contrast measurements for the modified Simpson's method (p < 0.05) were also observed. No significant difference was found for the ACT method. Contrast echocardiography provides better LV chamber opacification and significantly improves wall segment visualization. Furthermore, contrast echocardiography for measuring cardiac output is helpful for the modified Simpson's method.
Key Words: cardiac output, contrast echocardiography, dog, segmental scoring
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