ABSTRACT
Objective To evaluate the usefulness of real-time three-dimensional transesophageal echocardiography(RT-3D-TEE)in cardiac valvular diseases.Methods Preoperative and postoperative RT-3D-TEE studies were performed in 32 patients who had undertaken cardiac valve repair or valvular replacement using Philips iE33 with X7-2 probe,and quantitative analysed the mitral structure in cases of mitral valve prolapse by using online QLAB7.0 quantitative analysis software.Results RT-3D-TEE can demonstrate the anatomicsl structure clearly,evaluate the function of cardiac valves precisely,and reveal details of type,position and extent of lesions vividly in surgical view.RT-3D-TEE helped correct misdiagnose in 2 cases,revised surgical plans in 3 cases,and guided implementation of remedial surgery in 1 case.Conclusions RT-3D-TEE can present images lively,and it can provide adequate information for preoperative diagnosis,aid the formulation of surgical plan and evaluate surgical effect.
ABSTRACT
Objective To research the feasibility and accuracy on echocardiography measurement aortic annulus diameter(AAD)at the plane of three Junctions of aortic valve leaflets by real-time three-dimensional transesophageal echocardiography(RT-3D-TEE).Methods Twenty-three patients underwent echocardiography and aortic valve replacement because of acquired aortic valve disease.The AAD was measured in parasternal left ventricle long axis view(TTE-AAD)by transthoracic echocardiography(TTE)preoperative.The AAD was measured in left ventricle long axis view(TEE-AAD)and the distance of three iunctions of aortic valve leaflets (N,L,R) was measured in aortic short axis view by RT-3D-TEE intraoperative.The three-dimensional full volume images were analyzed by online QLAB 7.0 software.The AAD was measured by standard cylindrical valve sizer (OP-AAD)before aortic valve replacement surgery,too.Results Comparing with the three aortic valve leaflets of acquired aortic valve disease,the lines between their junctions constituted an approximate equilateral triangle regardless of the cause and degree of disease,and the length of the three groups was no significant difference(P>0.05).There was no significant difference between TTE-AAD and OP-AAD group(P>0.05),and the correlation was good(r=0.84).The N,L and R group compared separately with the OP-AAD group, there was no significant difference(P>0.05)and correlation was superior to TTE-AAD group(r=0.94, 0.97, 0.96).The difference between TEE-AAD and OP-AAD were significant(P<0.01).Conclusions Echocardiography measurement of AAD at the plane of three junctions of aortic valve leaflets is feasible,and it is better accuracy and repeatability comparing with parasternal left ventricle long axis view.