[Surgical therapy of myocardial infarction]

Area of Science:

• Cardiovascular Surgery
• Interventional Cardiology
• Critical Care Medicine

Background:

• Coronary artery bypass grafting (CABG) is increasingly supplanted by percutaneous coronary interventions (PCI) for myocardial infarction (MI).
• Surgical intervention remains the definitive treatment for mechanical complications arising from MI.
• This study evaluates the outcomes of surgical treatment for patients experiencing MI.

Purpose of the Study:

• To assess the results and outcomes of surgical treatment for myocardial infarction (MI).
• To identify the risks and complications associated with surgical repair in acute MI patients.
• To evaluate the long-term prognosis for survivors of surgical MI treatment.

Main Methods:

• A retrospective analysis of 1,959 patients undergoing coronary artery disease surgery between January 2008 and December 2012.
• Focus on 103 patients (5.3%) with acute MI, including those with cardiogenic shock, post-resuscitation, or on ventilation.
• Details on pre-operative PCI, intra-aortic balloon pump use, and timing of surgery relative to MI onset.

Main Results:

• Coronary artery bypass grafting (CABG) was performed in 78 patients; 25 experienced mechanical complications (e.g., papillary muscle rupture, ventricular septal rupture, free wall rupture, left ventricular aneurysm).
• High rates of postoperative complications including arrhythmias, low cardiac output syndrome, and pulmonary issues requiring prolonged ventilation.
• Hospital mortality was 13.4% (14 deaths).

Conclusions:

• Patients with acute myocardial infarction (MI) represent a high-risk surgical cohort.
• Preoperative instability, delayed reperfusion, and hemodynamic compromise from mechanical complications contribute to surgical risks.
• Despite significant postoperative complications and high mortality, long-term follow-up for survivors is encouraging.