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[Coronary disease and noncardiac surgery. An evaluation of the surgical risk]
J A Duarte1, A Veiga, M C Vagueiro
1Serviço de Cardiologia, Hospital de Santa Maria, Lisboa.
Insights
Assessing surgical risk in patients with coronary artery disease (CAD) is crucial. Preoperative evaluation, including clinical exams and stress testing, helps identify high-risk individuals for non-cardiac surgery.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Anesthesiology
Context:
- Coronary artery disease (CAD) is a leading cause of death globally.
- CAD significantly increases mortality risk in patients undergoing non-cardiac surgery.
- Accurate surgical risk assessment is vital for patients with ischemic heart disease.
Purpose:
- To outline methods for assessing surgical risk in patients with ischemic heart disease.
- To identify preoperative factors influencing cardiac events after non-cardiac surgery.
- To discuss indications for coronary angiography and revascularization.
Summary:
- Initial risk stratification involves clinical examination, electrocardiogram (ECG), and chest X-ray.
- Asymptomatic patients or those with mild angina and normal tests have low operative risk.
- Severe heart failure, unstable angina, or acute myocardial infarction indicate high surgical risk.
- Exercise stress testing or thallium-dipyridamole scintigraphy can identify patients at risk for cardiac events.
- Coronary angiography and revascularization decisions depend on clinical severity, therapeutic outcomes, left ventricular function, and patient age.
Impact:
- Improved preoperative risk stratification for non-cardiac surgery in CAD patients.
- Reduced perioperative cardiac events and mortality.
- Optimized decision-making regarding coronary angiography and revascularization.
- Enhanced patient management strategies for individuals with ischemic heart disease undergoing surgery.
Abstract:
Coronary artery disease is one of the leading causes of death in developed countries and one of the factors contributing to high mortality associated with noncardiac surgical procedures. This is the reason why is so important to correctly assess surgical risk in patients with ischemic heart disease. These patients can be evaluated by a simple clinic examination, electrocardiogram and chest X-ray. In asymptomatic patients or in patients with angina (Class I-II), normal electrocardiogram and chest X-ray, the operative risk is low. On the other hand, patients with severe heart failure (Class IV NYHA), unstable angina or acute myocardial infarction have a high surgical risk. The exercise stress testing must be performed in some cases in order to identify preoperative factors (electrocardiographic ischemic changes, low functional capacity) that might affect the development of cardiac events after noncardiac surgery. When not possible a thallium-dipyridamole scintigraphy should be considered. We discuss preoperative indications for coronary angiography and coronary revascularization. Coronary artery bypass surgery must be thought based on clinic severity, therapeutic results, left ventricular function and patient age, among other factors.