Spontaneous coronary artery dissection involving the left main stem: assessment by intravascular ultrasound

Area of Science:

• Cardiology
• Vascular Medicine
• Diagnostic Imaging

Background:

• Spontaneous coronary artery dissection (SCAD) is a rare cause of acute coronary syndrome (ACS).
• SCAD often affects young to middle-aged women, frequently without traditional cardiovascular risk factors.
• Diagnosis can be challenging, as initial coronary arteriograms may appear normal.

Observation:

• A 36-year-old female presented with symptoms of acute coronary syndrome.
• Initial coronary arteriogram was normal, but intravascular ultrasound revealed dissection and intramural hematoma of the left main coronary artery.
• The patient experienced a devastating cardiac event due to the dissection.

Findings:

• Intravascular ultrasound is crucial for diagnosing SCAD when conventional angiography is inconclusive.
• Left main coronary artery involvement in SCAD carries a high risk of adverse outcomes.
• Successful surgical revascularization can be a viable treatment option for complex SCAD cases.

Implications:

• This case underscores the importance of considering SCAD in young women with ACS, even with normal initial angiography.
• Advanced imaging modalities like intravascular ultrasound are vital for accurate diagnosis and management.
• Prompt and appropriate intervention, including surgical revascularization, can lead to favorable outcomes in selected SCAD patients.