Coronary microvascular obstruction and dysfunction in patients with acute myocardial infarction

Area of Science:

• Cardiology
• Vascular Biology
• Clinical Medicine

Background:

• Coronary microvascular obstruction and dysfunction (CMVO) frequently occurs in ST-segment elevation myocardial infarction (STEMI) patients, even after successful epicardial artery reperfusion.
• CMVO is linked to adverse clinical outcomes and a poorer prognosis in STEMI patients.
• Current therapeutic strategies for CMVO have shown limited success in large clinical trials.

Purpose of the Study:

• To review the pathophysiological mechanisms underlying CMVO in STEMI.
• To critically evaluate the existing evidence for CMVO treatment strategies.
• To propose future research directions and clinical approaches for managing CMVO.

Main Methods:

• Comprehensive literature review of preclinical studies, proof-of-concept trials, and large clinical trials.
• Analysis of pathophysiological mechanisms of CMVO.
• Synthesis of current evidence on pharmacological and mechanical interventions.
• Discussion of future perspectives and unmet needs.

Main Results:

• Despite advances in STEMI treatment, CMVO remains prevalent and prognostically significant.
• Preclinical and small-scale studies suggest potential benefits of various CMVO therapies, but these have not been validated in larger trials.
• Optimal management strategies for CMVO in the current STEMI treatment landscape are still under investigation.

Conclusions:

• CMVO represents a critical determinant of poor prognosis in STEMI patients.
• Translating promising preclinical findings into clinical benefits for CMVO has been challenging.
• Further research is needed to identify effective strategies for reducing CMVO incidence and improving outcomes in STEMI.