Application value of two-dimensional speckle tracking imaging in assessing arterial function in overweight elderly with normal carotid artery structure
Objective To assess the arterial stiffness and arterial strain with two-dimensional speckle tracking imaging(2D-STI)among overweight elderly with normal carotid intima-media thickness(cIMT).Methods A total of 124 elderly aged ≥ 60 years old who visited Geriatric Hospital of Nanjing Medical University from September 2023 to March 2024 were enrolled and divided into the normal group(BMI＜24,n=65)and the overweight group(BMI ≥ 24,n=59)according to the level of BMI,and then the overweight group was divided into cIMT1 group(cIMT≤0.66 mm,n=32)and cIMT2 group(cIMT＞0.66 mm,n=27).The detection of carotid ultrasound and carotid 2D-STI was performed.Results Compared with the normal group,the levels of stiffness index(longitudinal),elastic modulus(longitudinal)and pulse wave velocity(PWV)(longitudinal)were significantly higher(P＜0.05),and the levels of radial strain(radial,longitudinal)were significantly lower in the overweight group(P＜0.05).The levels of arterial compliance and arterial dilation in cIMT1 group were significantly higher than those in cIMT2 group(P＜0.05),and the levels of stiffness index,elastic modulus and PWV in cIMT2 group were higher than those in cIMT1 group(P＜0.05).Conclusions In the overweight elderly with normal cIMT,arterial stiffness escalates and stress diminishes.2D-STI can be utilized to monitor the early alterations in arterial stiffness among the elderly.
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