Correlation Between Triglyceride Glucose Index and Myocardial Injury Assessed by Cardiac Magnetic Resonance Imaging (CMR) in Patients With STEMI

Inclusion Criteria: * 1\) patients meet diagnostic criteria for STEMI-"The priority for these patients is the implementation of reperfusion therapy as soon as possible .In the appropriate clinical context,ST-segment elevation (accessed at the J-point) indicates possible acute coronary artery in the following situations:New ST elevation at the J-point in at least two contiguous leads:·≥ 2.5 mm in men under 40years,≥2mm in males 40 years and older,or ≥1.5mmin women relatively less of age in leads V2-V3,and/or ≥1mm in the other leads (in the absence of left ventricular hypertrophy or left bundle branch block) Post-STEMI reperfusion with PCI, diagnosis and treatment strategy in accordance with current diagnosis and treatment standards and guidelines27" and complete pPCI within 48h-"" diagnostic strategy meets current diagnostic criteria and guidelines;2) KillIP\<3 and consent to CMR examination and follow-up observation, and CMR examination is completed within 7 days after surgery. 3) Monitor baseline blood glucose and baseline triglycerides during admission. Exclusion criteria: 1) Patients with NSTEMI 2) Lack of clinical data 3) Presence of contraindications to CMR examination-such as implantable cardiac pacemaker, clo gadolinium contrast agent or renal insufficiency; meanwhile, patients with Killip IV cardiac function or clinical instability, and patients with valvular disease, congenital heart disease, pulmonary hypertension, cardiomyopathy history, persistent atrial fibrillation, etc. affecting cardiac structure and function parameters were excluded; Patients with previous history of myocardial infarction, coronary artery intervention and coronary artery bypass grafting were also excluded; patients with severe clinical diseases such as severe hematological diseases, infectious diseases, malignant tumors, liver and kidney failure, and mental disorders or intellectual disabilities who could not cooperate with examination and follow-up; 4) patients with poor MRI quality or sequence deletion were not included in the study. Exclusion Criteria: * Contraindications of CMR examination, such as implantable cardiac pacemaker, claustrophobia, allergy to gadolinium contrast agent or renal insufficiency; meanwhile, patients with Killip IV cardiac function or unstable clinical condition, as well as patients with valve disease, congenital heart disease, pulmonary hypertension, cardiomyopathy history, persistent atrial fibrillation, etc. affecting cardiac structure and function parameters shall be excluded; Patients with a history of myocardial infarction, coronary artery intervention, or coronary artery bypass grafting were also excluded. Patients with severe hematological diseases, infectious diseases, malignant tumors, liver and kidney failure, mental disorders or intellectual disabilities who could not cooperate with examination and follow-up, or poor or missing MRI images were not included in the study.