Head and neck magnetic resonance angiography before coronary artery bypass grafting

Area of Science:

• Vascular Surgery
• Diagnostic Imaging
• Cardiology

Background:

• Coronary artery bypass grafting (CABG) is a common procedure for severe coronary artery disease.
• Pre-operative assessment of cerebrovascular and head/neck vasculature is important for patient outcomes.
• Magnetic resonance angiography (MRA) is a non-invasive imaging technique for evaluating blood vessels.

Purpose of the Study:

• To determine the incidence of vascular lesions in the head and neck using MRA.
• To identify factors associated with severe stenosis in these vessels.
• To assess the importance of intracranial vs. extracranial lesion detection before CABG.

Main Methods:

• MRA was utilized to screen for vascular lesions in the head and neck of patients undergoing elective CABG.
• Occlusive lesions were evaluated for severity (>= 60% stenosis or occlusion).
• Statistical analysis correlated lesion prevalence with patient demographics and comorbidities.

Main Results:

• The prevalence of >= 60% stenosis or occlusion was 12.8% for extracranial arteries and 13.4% for intracranial arteries.
• Extracranial lesions correlated with age, peripheral vascular disease (PVD), and prior myocardial infarction.
• Intracranial lesions correlated with age, hypertension, PVD, and left main trunk disease.

Conclusions:

• The incidence of intracranial and extracranial vascular lesions is comparable in patients undergoing CABG.
• Screening for intracranial vascular lesions is as critical as for extracranial lesions prior to CABG.
• These findings underscore the need for comprehensive vascular assessment before cardiac surgery.