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| Evaluation of left atrial function by three-dimensional echocardiography in patients with mitral annular calcification |
| ZHANG Na, GAO Lin, QI Jin-wei |
| Department of Ultrasound, the Second Hospital Affiliated to Dalian Medical University, Dalian Liaoning 116027, China |
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Abstract Objective: To evaluate left atrial function by real-time three-dimensional echocardiography(RT3DE) in patients with mitral annular calcification. Methods: Forty-one patients with MAC were divided into two groups according to the severity of MAC: G1, patients with mild MAC; G2, patients with moderate to severe MAC. 30 healthy persons served as control group. RT3DE was used to obtain the left atrial volume parameters, including LA maximum volume(Vmax), LA minimum volume(Vmin), and pre atrial contraction volume(VpreA). LA total stroke volume(TSV), LA total emptying fraction (LAEF), LA active stroke volume(ASV), LA active emptying fraction(AEF), LA passive stroke volume(PSV), LA passive emptying fraction(PEF), LA expansion index(EI) were calculated. Results: ①Compared with the control group, Vmax, Vmin and VpreA were markedly increased(P<0.05), TSV, lAEF, ASV, AEF and EI were markedly decreased(P<0.05), PSV and PEF were not markedly changed(P>0.05).②Compared with group G2, Vmax, Vmin and VpreA were markedly increased(P<0.05), TSV, lAEF, ASV, AEF and EI were markedly decreased(P<0.05), PSV and PEF were not markedly changed(P>0.05). Conclusion: RT3DE showed that left atrial volume was increased, left atrial active ejection function was decreased, the compliance was decreased, and the function of the channel was not significantly changed. RT3DE can reflect changes of left atrial function in patients with MAC, and may be sensitive and accurate to evaluate left atrial function.
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Received: 25 February 2015
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2015, Vol. 26 
