Preliminary study on elasticity of medium-sized artery in patients with type 2 diabetes through strain-blood pressure index / 中华超声影像学杂志

ABSTRACT

Objective To investigate the clinical value and the feasibility of strain-blood pressure index(SBPI) in assessing the elasticity of brachial artery and anterior tibial artery in patients with type 2 diabetes mellitus. Methods Forty-six type 2 diabetic patients and 50 healthy volunteers were involved. Maxmum of circumferential strain (CSmax) of brachial artery and anterior tibial artery were acquired through strain and strain rate imaging(Xstrain). Local systolic blood pressure(LSBP) and local diastolic blood pressure(LDBP) of brachial artery and anterior tibial artery were measured at the same time. SBPI,tibial-brachial index (TBI), and ankle-brachial index(ABI) were calculated, SBPI = CSmax/[(LSBP-LDBP) /LDBP]×100%,TBI = SBPI of anterior tibial artery/SBPI of brachial artery, ABI = LSBP of anterior tibial artery/LSBP of brachial artery. Parameters were compared between the case group and the control group. Results SBPI of anterior tibial artery and TBI had significant difference between the case group and the control group( P < 0.05), while SBPI of brachial and ABI had no significant difference( P >0. 05).Conclusions SBPI might be a new index for evaluating the elasticity of medium-sized arteries in patients with type 2 diabetes, and different changes caused by type 2 diabetes between brachial artery and anterior tibial artery could be reflected by TBI.