Evaluation of right atrial function by two-dimensional speckle tracking echocardiography in patients with right ventricular myocardial infarction
Abstract：Objective To evaluate the value of right atrial function for early monitoring of right ventricu-lar myocardial infarction by two-dimensional speckle-tracking echocardiography(2DSTE). Methods Fifty-six pa-tients with INFMI (34 patients without RVMI and 22 patients with RVMI) were enrolled in the current study. RA diameter in anteroposterior and mediolateral directions and RA area were measured in the 4-chamber view. The myocardial peak velocity of the RV free wall in systole(s′) and early and late diastole(e′ and a′) was measured in the apical 4-chamber view at the level of the tricuspid valve annulus via pulsed-wave tissue Doppler imaging. Right atrial function was evaluated by 2DSTE. Right atrial systolic strain(SS), early diastolic strain(EDS), late di-astolic strain(LDS) were measured. Results SS, LDS of the right atrium were reduced in the patients with INF-MI+RVMI compared to the patients with INFMI(P<0.05). The area under the curve for LDS was 0.834(P=0.001, 95%CI 0.693-0.974) and for SS was 0.713 (P=0.034, 95%CI 0.538-0.888). Right atrial LDS<6.88% had 64.71% sensitivity and 94.12% specificity and SS<8.44% had 41.18% sensitivity and 88.24% specificity for the discrimination of INFMI+RVMI from INFMI. Conclusion Our results demonstrated that right atrial reservoir and contraction functions were impaired in the patients with INFMI+RVMI compared with the patients with INFMI. The right atrial function can be evaluated by 2DSTE in patients with RVMI. Right atrial LDS and SS can suggest RVMI in patients with INFMI.
Keywords：Myocardial infarctionRight atriumRight ventricle2D speckle-tracking echocardiog-raphy
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 614-618,后插1 )