AIM To study the value of echocardiography and speckle tracking in the diagnosis of ARVC.
METHODS 60 ARVC patients admitted to our hospital from January 2018 to December 2019 were selected as the observation group, and 60 healthy patients who came to our hospital for physical examination during the same period were selected as the control group. The basic clinical data of the two groups were compared, and the echocardiographic findings, peak value and strain rate of each segment of the lateral wall of the right ventricle during myocardial systolic period were observed by color doppler and speckle tracking technique. The observation group was divided into 3 subgroups according to the grade of ARVC, including 29 patients in the grade II group, 21 patients in the grade III group, and 10 patients in the grade IV group. Peak systolic velocity and strain rate of each segment of right ventricular lateral wall were compared in 3 subgroups.
RESULTS The peak velocity and strain rate of each segment of the lateral wall of the right ventricle in myocardial systolic period of the observation group were significantly lower than that of the control group (P<0.05). The peak velocity and strain rate of the basal segment, middle segment and apex segment of the right ventricular lateral wall in the observation group of 3 subgroups were all in the grade II > grade III > IV group during the period of myocardial systole (P<0.05). The peak velocity and strain rate of different myocardial segments have certain value in the diagnosis of arrhythmogenic right ventricular cardiomyopathy. The middle myocardial strain rate has the highest value in the diagnosis of arrhythmogenic right ventricular cardiomyopathy, and the area under the curve is as high as 0.905(0.612-0.978).
CONCLUSION Echocardiography and speckle tracking technology detects the changes of ventricular structure, myocardial systolic function and motor ability, which is of great value for the early diagnosis of ARVC and the prediction of the severity of ARVC.
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