Risk Factors for Microvascular Obstruction Post-Emergency PCI in AMI Patients

Recruiting

• Conditions: Acute Myocardial Infarction (AMI)

• Registration Number: NCT07042321
• Lead Sponsor: The Third Xiangya Hospital of Central South University

Brief Summary

The goal of this prospective cohort study is to investigate the relationship between the TyG index and early identification of MVO in AMI patients undergoing emergency PCI and CMR imaging. The study will enroll approximately 300 AMI patients treated at Xiangya Third Hospital of Central South University from June 2024 to August 2025. The main questions it aims to answer are:

* How does the TyG index correlate with the early detection of MVO?

* What differences in cardiovascular adverse events during hospitalization exist between groups with varying TyG index levels? Participants will undergo emergency PCI and CMR imaging within 3-7 days post-procedure. Data collected will include demographic characteristics, clinical history, coronary angiography data, laboratory test indicators (especially metabolic markers such as blood glucose and lipids), IVUS-related plaque information, and CMR results.

Detailed Description

Not available

Study Timeline

• Study Start: 2024-06-01
• Study First Submitted: 2025-05-28
• Status Verified: 2025-06
• Study First Submitted QC: 2025-06-18
• Study First Posted: 2025-06-29
• Last Update Submitted: 2025-06-29
• Last Update Posted: 2025-07-02
• Primary Completion: 2025-08-31
• Study Completion: 2025-08-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 300

Inclusion Criteria

• Age ≥ 18 years.
• STEMI symptom onset time < 12 hours.
• STEMI symptom onset time 12-48 hours, with ongoing ischemic symptoms, hemodynamic instability, or life-threatening ventricular arrhythmias.
• Very high-risk NSTEMI; undergoing emergency PCI treatment.
• Voluntary signed informed consent form.

Exclusion Criteria

• Non-obstructive acute myocardial infarction.
• Severe chronic kidney disease (defined as estimated glomerular filtration rate <20 mL/min per 1.73 m²).
• Pregnant women or those planning to become pregnant.
• Failure of emergency PCI.
• Unclear CMR images

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
The presence or absence of microvascular obstruction (MVO) diagnosed by cardiac magnetic resonance (CMR) within 3-7 days postoperatively	3-7 days postoperatively

Trial Locations

Locations (1)

Xiangya Third Hospital of Central South University; 🇨🇳 Changsha, Hunan Province,China, China