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Concomitant cerebral and myocardial revascularization
Insights
Patients with both coronary artery disease and carotid artery disease face high risks. Combined surgery outcomes are debated, but individual procedures offer benefits. These high-risk patients require careful, individualized evaluation.
Area of Science:
- Cardiovascular Surgery
- Vascular Surgery
- Neurology
Background:
- Concomitant coronary artery disease (CAD) and significant carotid artery occlusive disease (CAOD) place patients at high risk for stroke and myocardial infarction.
- Individual surgical interventions like coronary artery bypass grafting (CABG) and carotid endarterectomy (CEA) are beneficial when indicated separately.
- The prevalence of coexisting CAD and CAOD varies, with angiographic data suggesting 1-6% and vascular lab screening indicating up to 12-14%.
Purpose of the Study:
- To evaluate the controversial question of whether a combined surgical approach favorably influences outcomes in patients requiring both CABG and CEA.
- To analyze the patient profile and risks associated with this high-risk subset.
Main Methods:
- Review of patient profiles from large clinical studies.
- Analysis of reported complication rates for individual procedures and combined approaches.
Main Results:
- Patients with concomitant CAD and CAOD are typically older, sicker, and exhibit more extensive atherosclerosis and cardiovascular risk factors.
- The neurologic complication rate for isolated CABG is approximately 2%.
- The combined procedure is associated with higher operative mortality and perioperative stroke risk compared to either procedure alone.
Conclusions:
- Patients with concurrent significant CAD and CAOD represent a distinct, high-risk clinical subset.
- The risks of perioperative complications for combined procedures cannot be expected to equal those of isolated interventions.
- Individualized patient evaluation is crucial for determining the optimal treatment strategy.
Abstract:
Patients who present with concomitant coronary artery disease and hemodynamically significant carotid artery occlusive disease represent a subset of individuals at high risk for myocardial infarction and stroke. Whether the combined surgical approach favorably influences the outcome of patients requiring major cardiovascular surgical procedures remains controversial. However, it is clear that coronary artery bypass procedure and carotid endarterectomy are each beneficial to patients who have the appropriate indications for each procedure individually. The coincidence of carotid and coronary occlusive disease varies with the type of diagnostic tests involved. Angiographic data suggest a coincidence in the range of 1 to 6 per cent, while vascular laboratory screening data in some studies have indicated a coincidence as high as 12 to 14 per cent--a range that appears to be higher than one might expect from clinical experience. It is clear from analyzing the patient profile of this subset of patients from large clinical reviews that in general they are older and sicker and have a higher incidence of cardiovascular risk factors representing more extensive atherosclerosis. It is also well documented that the neurologic complication rate for all patients undergoing coronary bypass is in the range of 2 per cent. Therefore, it should not be expected that the operative mortality rate and risk of perioperative stroke in patients undergoing the combined reconstructive procedure can equal those for either procedure alone. These patients represent a separate clinical subset at higher risk for perioperative complications and need to be evaluated individually.