Application value of two-dimensional speckle tracking imaging in cardiovascular risk stratification

Shi Xiuying; Mi Jia

doi:10.3969/j.issn.1674-4055.2018.05.19

Abstract：Objective To investigate the application of two-dimensional speckle tracking imaging in cardiovascular risk stratification. Methods 157 patients in Department of Cardiology, Affiliated Hospital of Yan'an University, Shaanxi, were selected according to Framingham risk score (FRS). They were divided into low risk group (72 cases), middle risk group (52 cases) and high-risk group (33 cases). By two-dimensional ultrasound speckle tracking imaging technique for the detection of carotid artery in patients with circumferential strain (CS), brachial artery pressure (PP) after correction for CS/PP, and carotid artery intima-media thickness (IMT), the difference with the detection indexes of each group, and the ROC curve is divided into value of each index prediction of high-risk patients the. Results The levels of CS, CS / PP and IMT in patients with different cardiovascular risk stratification were significantly different (P＜0.05). The levels of CS and CS / PP were significantly decreased as the risk of cardiovascular risk increased (P＜0.05) , While the IMT level increased significantly (P＜0.05). Using ROC curve to analyze the predictive value of relevant test indexes for high-risk patients, the area under the predicted curve of CS for high-risk patients was 0.868, and the area under the predicted curve of CS / PP for high-risk patients was 0.858. The area under the predicted curve of IMT for high risk patients was 0.771. Conclusion Two dimensional speckle tracking imaging can effectively reflect the situation of carotid artery in patients, and assess and predict the risk of cardiovascular events, which has important clinical value.