Assessment of left atrial function in patients with hypertrophic cardiomyopathy by strain rate

Objective To explore the clinical value of strain rate imaging(SRI) in evaluating left atrial function in patients with hypertrophic cardiomyopathy.Methods The strain rate values including peak systolic strain rate(SSR),early diastolic strain rate peak(ESR),late diastolic strain rate peak(ASR) were measured of atrial septum,left atrial anterior,inferior,lateral,posterior walls,respectively.Individual average of SSR,ESR,ASR were calculated and analyzed between HCM patients with primary septal hypertrophy(HCM group,n=21) and control group(n=26).Results The values of early diastolic strain rate peak and peak systolic strain rate in HCM group were smaller than those of control group,while the value of late diastolic strain rate peak in HCM group was bigger than that of control group,all with statistical difference(P0.05).Conclusion Strain rate imaging can quantitatively evaluate left atrial function in patients with hypertrophic cardiomyopathy,indirectly quantifying left ventricular function change.