Refractory coronary artery spasm after minimally invasive direct coronary artery bypass grafting

Area of Science:

• Cardiovascular Surgery
• Interventional Cardiology
• Critical Care Medicine

Background:

• Postoperative coronary artery spasm (CAS) is a rare yet critical complication following cardiac surgery.
• Minimally invasive direct coronary artery bypass grafting (MIDCAB) can present unique challenges.
• A history of positive ergonovine stress testing indicates a predisposition to vasospastic events.

Observation:

• A 51-year-old male developed refractory coronary artery spasm after MIDCAB for left anterior descending artery stenosis.
• The patient's condition was severe, necessitating advanced circulatory support.
• Standard medical management for vasospasm proved insufficient.

Findings:

• Successful management was achieved through the rapid implementation of intra-aortic balloon pump (IABP) counterpulsation.
• Extracorporeal membrane oxygenation (ECMO) provided essential hemodynamic and respiratory support during the critical phase.
• This combined approach effectively stabilized the patient and resolved the refractory spasm.

Implications:

• This case underscores the importance of recognizing and aggressively managing refractory CAS in the postoperative cardiac surgery setting.
• IABP and ECMO are vital tools for stabilizing patients with severe refractory coronary artery spasm.
• Early consideration of advanced mechanical support can improve outcomes in this rare but dangerous complication.