Preoperative cardiac evaluation for elective noncardiac surgery

Area of Science:

• Cardiology
• Perioperative Medicine
• Cardiac Surgery

Background:

• Preoperative cardiac risk assessment is crucial for patients undergoing noncardiac surgery.
• Understanding perioperative myocardial ischemia and recent clinical trials informs risk stratification.
• Existing risk indexes may underestimate risks in specific patient groups.

Purpose of the Study:

• To review current approaches to preoperative cardiac risk assessment for noncardiac surgery.
• To incorporate new insights into perioperative myocardial ischemia and clinical trial data.
• To guide clinical decision-making for high-risk surgical patients.

Main Methods:

• MEDLINE search for relevant articles.
• Bibliography review of identified literature.
• Synthesis of information on pathophysiologic features and clinical trials.

Main Results:

• Multifactorial risk indexes are valuable but can underestimate risks in patients with peripheral vascular disease.
• No definitive data exist comparing preoperative revascularization to medical therapy; decisions must be individualized.
• Congestive heart failure patients can undergo surgery if compensated; aortic stenosis patients face high risks requiring tailored management.
• Preoperative arrhythmias are risk factors primarily when linked to underlying heart disease.

Conclusions:

• A targeted history, physical exam, and judicious lab studies are typically sufficient for risk assessment.
• Identifying and modifying risk factors before surgery is essential.
• Individualized clinical decisions are paramount due to a lack of comparative data for certain interventions.