[Preoperative evaluation of coronary circulation]

Area of Science:

• Cardiology
• Vascular Surgery
• Preoperative Assessment

Background:

• Defining a preoperative plan for coronary circulation assessment in vascular surgery is challenging due to contradictory studies and imperfect diagnostic methods.
• Accurate patient selection is vital to mitigate perioperative cardiac complications through reinforced medical treatment or anatomical correction.
• Initial assessment involves patient history, clinical examination, and basic tests like resting ECG and chest X-ray.

Purpose of the Study:

• To outline a strategic approach for preoperative coronary circulation assessment in patients undergoing vascular surgery.
• To identify patients at high risk for perioperative cardiac complications.
• To guide the selection of appropriate diagnostic tools based on patient risk factors and surgical demands.

Main Methods:

• Initial risk stratification using patient history, clinical examination, and resting ECG.
• Utilizing exercise ECG (Holter method) for patients unable to exercise.
• Employing dobutamine echocardiography when exercise testing is not feasible.
• Considering coronary angiography for patients with concerning findings from non-invasive tests.

Main Results:

• Low risk of complications in patients without Goldman risk factors or ischemic syndrome.
• Exercise ECG is valuable for potential coronary artery disease patients who cannot exercise.
• Dobutamine echocardiography demonstrates good sensitivity and specificity for assessing cardiac risk when exercise is contraindicated.
• Thallium-dipyridamole scanning's utility in vascular surgery requires further refinement, possibly through quantitative analysis.

Conclusions:

• A multi-faceted approach to preoperative coronary assessment is necessary, integrating clinical evaluation with targeted non-invasive testing.
• Patients with significant risk factors or concerning non-invasive test results warrant further investigation with coronary angiography.
• The goal is to optimize patient management and reduce the incidence of perioperative cardiac events in vascular surgery.