Methods
Eighty-five hospitalized patients with regional wall motion abnormalities (RWMA) according to routine echocardiography in STEMI, thirty patients with type 2 DM. All of them were underwent STE associated with LDDSE (STE-LDDSE) prior to coronary angiography and percutaneous coronary intervention (PCI). Every segment image was acquired and evaluated by wall-motion analysis. The images of STE-LDDSE were analyzed quantitatively for peak-systolic strain (S) and strain rate (Sr), the short axis of radial strain (RS), radial strain rate (RSr), circumferential strain (CS), circumferential strain rate (CSr) and the long axis of longitudinal strain (LS), longitudinal strain rate (LSr) by using the QLAB software. All patients underwent PCI within one week after completing STE-LDDSE examination, and echocardiograms were reviewed at 1, 3, and 6 months after surgery.