A clinical randomized trial to evaluate the safety of a noninvasive approach in high-risk patients undergoing major...

Area of Science:

• Cardiology
• Vascular Surgery
• Cardiac Imaging

Background:

• Coronary artery disease (CAD) management in patients undergoing vascular surgery is critical.
• Previous studies suggest prophylactic coronary revascularization (PCR) does not improve outcomes in general vascular surgery patients.
• Identifying a subgroup that may benefit, such as those with extensive ischemia, is important.

Purpose of the Study:

• To assess the feasibility and efficacy of prophylactic coronary revascularization in patients with extensive preoperative stress-induced ischemia.
• To determine if this strategy improves postoperative outcomes in a high-risk population.

Main Methods:

• A feasibility study screened 1880 patients; 430 high-risk patients underwent cardiac testing (dobutamine echocardiography or stress nuclear imaging).
• Patients with extensive ischemia (≥5 segments or ≥3 walls) were randomized to revascularization or no revascularization.
• All patients received beta-blockers and antiplatelet therapy; endpoints were all-cause death or myocardial infarction at 30 days and 1 year.

Main Results:

• 101 patients had extensive ischemia and were randomized (49 to revascularization, 52 to no revascularization).
• Revascularization did not improve the 30-day composite endpoint (43% vs. 33%; OR 1.4, 95% CI 0.7-2.8).
• No significant benefit was observed at 1-year follow-up (49% vs. 44%; OR 1.2, 95% CI 0.7-2.3).

Conclusions:

• Preoperative coronary revascularization in high-risk patients with extensive ischemia was not associated with improved outcomes in this pilot study.
• The findings suggest that this strategy may not be beneficial for this specific patient group.
• Further research is needed to refine patient selection for revascularization in the context of vascular surgery.