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Atheroembolism in cardiac surgery
John R Doty1, Robb E Wilentz, Jorge D Salazar
1Division of Cardiac Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Insights
Atheroembolism after cardiac surgery can affect multiple organs, leading to severe complications and death. Early identification of high-risk patients and improved surgical techniques are crucial for better outcomes.
Area of Science:
- Cardiovascular Surgery
- Pathology
- Vascular Complications
Background:
- Atheroembolism is a known complication following cardiac surgery.
- Its precise incidence and patient outcomes require further characterization.
Purpose of the Study:
- To retrospectively analyze the incidence and outcomes of atheroembolism in patients undergoing cardiac surgery.
- To better define the clinical presentation and impact of this complication.
Main Methods:
- A retrospective review of 49,377 autopsy and surgical specimens from 1973-1995.
- Identification of 327 cases (0.7%) with atheroembolism, including 29 (0.2%) with recent cardiac surgery.
- Detailed review of patient charts and pathology for operative findings, outcomes, and histology.
Main Results:
- Atheroembolism occurred in the heart (21%), central nervous system (24%), gastrointestinal tract (66%), kidneys (48%), and lower extremities (17%).
- Over half of affected patients (55%) experienced embolism in multiple organ systems.
- Atheroembolism was directly attributed to death in 21% of cases, including cardiac failure, stroke, and gastrointestinal compromise.
Conclusions:
- Cardiac surgery-associated atheroembolism presents with diverse and severe clinical manifestations, including mortality.
- The study highlights the significant morbidity and mortality associated with this complication.
- Recommendations include preoperative risk assessment, modified perfusion techniques, and interventions to prevent thrombosis and ischemia.
Background:
Atheroembolism is a recognized complication of cardiac surgery, but its incidence and various outcomes have not been completely described. A retrospective study was undertaken to better characterize the syndrome.
Methods:
Records of 49,377 autopsies and surgical specimens from the Johns Hopkins Hospital between 1973 and 1995 were reviewed. Three hundred twenty-seven patients (0.7%) had an identifiable atheroembolism on histologic examination. Of these patients, 29 (0.2%) had undergone a cardiac surgical procedure within 30 days of autopsy or surgical resection. Patient charts and pathology specimens were reviewed for operative findings, postoperative outcomes, and histology.
Results:
Six of the 29 patients (21%) had atheroembolism to the heart, 7 patients (24%) had embolism to the central nervous system, 19 patients (66%) had embolism to the gastrointestinal tract, 14 patients (48%) had embolism to one or both kidneys, and 5 patients (17%) had embolism to a lower extremity. Sixteen patients (55%) had atheroembolism in two or more areas. In 6 patients (21%), death was directly attributable to atheroembolism, including intraoperative cardiac failure from coronary embolism (n = 3), massive stroke (n = 2), and extensive gastrointestinal embolization (n = 1).
Conclusions:
Atheroembolism in cardiac surgery has a broad spectrum of clinical presentations, including devastating injuries and death. Although the true incidence is probably underestimated in this retrospective study, the high attendant mortality and morbidity of atheroembolism have been documented. Improvements in outcome are likely to be associated with preoperative identification of patients at high risk, modifications of perfusion technique, and interventions to minimize secondary thrombosis and progressive organ ischemia.
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