Simultaneous myocardial revascularization and carotid endarterectomy

Area of Science:

• Cardiovascular Surgery
• Neurosurgery
• Vascular Surgery

Background:

• Simultaneous carotid endarterectomy and coronary artery bypass grafting (CABG) is performed in patients with comorbid carotid artery stenosis and coronary artery disease.
• Optimal timing and technique for combined procedures remain debated, impacting patient outcomes.
• Left main coronary artery disease in conjunction with carotid disease presents a significant surgical challenge.

Purpose of the Study:

• To compare the safety and efficacy of two distinct surgical approaches for combined carotid endarterectomy and CABG.
• To evaluate the impact of surgical timing (during vs. before cardiopulmonary bypass) on neurologic deficits and mortality.
• To assess the overall operative risk associated with these combined procedures, particularly in patients with left main coronary artery disease.

Main Methods:

• A comparative study involving 73 patients undergoing simultaneous carotid endarterectomy and CABG.
• Group 1 (n=37): Carotid endarterectomy performed during cardiopulmonary bypass with hypothermic cerebral protection.
• Group 2 (n=36): Carotid endarterectomy performed immediately before cardiopulmonary bypass initiation.

Main Results:

• No significant difference in the incidence of permanent or transient neurologic deficits between the two groups.
• Group 1 had a higher proportion of patients with prior myocardial infarction or stroke (p<0.05).
• Early mortality was higher in patients with left main coronary artery disease (5 of 7 deaths), irrespective of the surgical method.

Conclusions:

• Neither surgical technique demonstrated a clear advantage in terms of neurologic outcomes or overall mortality.
• The presence of left main coronary artery disease significantly increases the operative risk in patients undergoing combined carotid endarterectomy and CABG.
• Further research may be needed to refine strategies for managing patients with combined carotid and complex coronary artery disease.