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| Real-time three-dimensional echocardiographic quantitative assessment of the function of interventricular septum of canines in acute right ventricular myocardial ischemia |
| DENG Yong-huai1, ZHANG Li-min2, REN Wei-dong2, MA Chun-yan2, CHEN Xin2 |
| 1. Ultrasonic Department, the Nuclear Industry 246 Hospital, Dandong Liaoning 118003, China; 2. Cardiovascular Test Center, First Hospital, China Medical University, Shenyang 110001, China |
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Abstract Objective: To discuss the value of noninvasive real-time three-dimensional echocardiography(RT-3DE) evaluating the function of interventricular septum in acute right ventricular myocardial ischemia. Methods: Eighteen canines were used in this study. Right coronary artery ischemia was induced by occlusion at the proximal segment. Before RCA ischemia, the canines were used as the normal control group and after ischemia used as the experimental group. RT-3DE protocol was: before and during ischemia: the right ventricular end diastolic volume(RVEDV), left ventricular end diastolic volume(LVEDV), right ventricular end systolic volume(RVESV）, left ventricular end systolic volume(LVESV) were measured using RT-3DE fraction(rEF) of posterior interventricular with 3DQ advanced standard commercial software (Philips iE-33). At the meantime, regional ejection septum were calculated. Results: Blocking RCA did not affect the blood supply of the interventricular septum tissue. In IRCA group: RVEDV and RVESV were increased obviously(P<0.05), but LVEDV diminished obviously. Compared with the normal control group, rEF of posterior interventricular septum was decreased significantly in the IRCA group(P<0.05). Conclusions: rEF of posterior interventricular septum was decreased significantly when canines in acute right ventricular myocardial ischemia. RT-3DE can noninvasively quantify the function of interventricular septum in acute right ventricular myocardial ischemia.
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Received: 27 November 2007
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Corresponding Authors:
REN Wei-dong
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2008, Vol. 19 
