STEMI or non-STEMI: that is the question

Area of Science:

• Cardiology
• Emergency Medicine

Background:

• Acute coronary syndromes (ACS) are classified by ECG findings: ST-elevation myocardial infarction (STEMI) or non-ST-elevation myocardial infarction (NSTEMI).
• Immediate therapy, including primary percutaneous coronary intervention (PPCI), is vital for acute myocardial infarction (AMI) patients, ideally within 90 minutes of first medical contact.
• Pre-hospital triage and diagnosis in busy emergency settings can delay PPCI for AMI patients without ST-segment elevation.

Purpose of the Study:

• To describe a case of NSTEMI where initial non-invasive parameters underestimated myocardial risk.
• To discuss the challenges in optimizing the timing of angiography and revascularization in NSTEMI patients.
• To emphasize the importance of identifying high-risk NSTEMI for immediate intervention.

Main Methods:

• Case report of a patient diagnosed with NSTEMI.
• Review of diagnostic and risk stratification procedures in the emergency department.
• Retrospective analysis of the patient's clinical presentation and non-invasive parameters.

Main Results:

• The patient with NSTEMI was initially scheduled for angiography within 24 hours.
• Retrospective analysis indicated a significant amount of myocardium at risk, which was not detected by initial non-invasive assessments.
• This delay potentially postponed critical intervention.

Conclusions:

• Optimal timing for angiography and revascularization in NSTEMI remains a clinical challenge.
• Non-invasive parameters may not always accurately reflect the extent of myocardial risk in NSTEMI.
• Immediate transfer to the catheterization laboratory should be considered for high-risk NSTEMI patients, even without ST-segment elevation.