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[Exploratory hierarchy and surgical indications for carotid surgery in patients with coronary disease]
Insights
Carotid artery surgery poses risks, primarily from coronary disease. Pre-operative cardiac evaluation is crucial for identifying high-risk patients and optimizing surgical outcomes.
Area of Science:
- Cardiovascular Surgery
- Vascular Surgery
- Cardiology
Context:
- Carotid artery surgery carries a significant risk of mortality, predominantly due to underlying coronary artery disease.
- A study of 50 patients undergoing carotid artery surgery revealed various post-operative cardiologic complications, including myocardial infarction, angina, and arrhythmias.
Purpose:
- To analyze post-operative cardiologic complications following carotid artery surgery.
- To review the literature on combined carotid and coronary artery disease and identify risk factors for adverse cardiac events.
Summary:
- Coronary artery disease is the leading cause of death post-carotid artery surgery.
- Combined carotid and coronary artery stenosis occurs frequently, especially in asymptomatic patients.
- Pre-operative cardiac assessment, including ECG and stress testing, is vital for risk stratification and guiding surgical decisions.
Impact:
- Improved pre-operative patient evaluation and multidisciplinary collaboration can enhance the safety of carotid artery surgery for high-risk individuals.
- Recommendations for managing patients with concomitant carotid and coronary artery disease, including myocardial protection and revascularization strategies.
- Highlights the importance of addressing coronary artery disease concurrently or sequentially with carotid interventions to reduce perioperative mortality.
Abstract:
The major cause of death from carotid artery surgery (1.2% in 1984 in this series) is still coronary disease and myocardial infarct. A series of 50 patients were randomly selected for detailed study of post-operative cardiologic complications and the following sequelae were noted: mortality = 1 myocardial infarct; morbidity = 1 myocardial infarct, 3 documented anginal pains, 8 repolarization disorders, 4 benign ventricular arrhythmias. Analysis of these complications and a literature review demonstrated: the high frequency of combined carotid artery and coronary artery stenosis even in asymptomatic patients (25 to 40% of cases); the elevated percentage of complications in patients with symptomatic coronary disease (mortality risk multiplied by ten), hypertension or arterial disease; the low effect of age taken alone as risk factor. Pre-operative explorations to detect angina, particularly when latent and asymptomatic, should include a questionnaire, strict patient clinical examination and detailed reading of electrocardiogram tracings. An effort test should be performed as a function of results and patients' medical history and when positive should lead to coronarography in patients under 70 in good general condition, and when doubt persists after the effort tests. The indication for surgical treatment is dependent on results of these explorations: Carotid artery surgery (stenosis with high cerebral risk) should be performed under pre- and post-operative myocardial protection in patients with coronary artery disease who are too old or inoperable for cardiac reasons. Simultaneous myocardial and cerebral revascularization in the presence of severe lesions and at equivalent risk of progression. First intention carotid artery surgery for bilateral stable lesions with subsequent simultaneous myocardial and cerebral revascularization. First intention carotid artery surgery in case of cerebral ischemia with coronary artery shunt surgery at a later stage. Improved exploration of patients and close cooperation between cardiologists, anaesthetists and surgeons should allow patients at high risk to be operated upon under improved conditions of safety.