This observational study aimed to investigate the prognostic value of high-frequency QRS (HF-QRS) in patients with acute myocardial infarction (AMI) after percutaneous coronary intervention (PCI), as well as its potential role in diagnosing microvascular dysfunction. The main question it aims to answer is:
1. Whether HF-QRS could serve as an effective tool for early identification of high-risk AMI patients and prognosis prediction; 2. Whether HF-QRS provides auxiliary diagnostic value for post-AMI microvascular dysfunction.
Participants underwent HF-QRS assessment and were prospectively followed for 1 year to record the incidence of major adverse cardiovascular events (MACE).
Aged 18 to 75 years (inclusive)
History of prior myocardial infarction or chronic heart failure
patients with acute myocardial infarction following percutaneous coronary intervention
Cohort
Prospective
High-Frequency QRS
DeviceAll enrolled patients underwent HF-QRS assessment, with subsequent recording of MACE to evaluate the predictive value of HF-QRS parameters for clinical outcomes
To evaluate the predictive value of high-frequency QRS (HF-QRS) parameters for major adverse cardiovascular events (MACE) within 1 year after PCI in AMI patients and to construct a prognostic risk prediction model.
To evaluate the adjunctive diagnostic value of high-frequency QRS parameters for microvascular dysfunction in ACS patients following percutaneous coronary intervention
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