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Evaluation of Coronary Flow Reserve After Myocardial Ischemia Reperfusion in Rats
Published on: June 28, 2019
Improvement of symptoms and coronary perfusion gradient with mechanical left ventricular unloading in flow-limiting
Giuseppe Tarantini1, Tommaso Fabris1, Giulio Rodinò1
1Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padova, Italy.
Insights
Spontaneous coronary artery dissection (SCAD) is a serious condition, especially for young women. A novel mechanical support device successfully stabilized a patient with complex SCAD, bridging to definitive treatment.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiovascular Medicine
Background:
- Spontaneous coronary artery dissection (SCAD) poses significant risks, including acute coronary syndrome and sudden cardiac death, predominantly affecting young women.
- Traditional interventions like percutaneous coronary intervention and coronary artery bypass grafting present challenges in SCAD patients due to complexity and poorer outcomes.
Observation:
- A young woman presented with ST-elevation myocardial infarction caused by spontaneous coronary artery dissection of the left anterior descending artery.
- The patient's complex anatomy and unstable condition precluded immediate medical management or revascularization.
Findings:
- A percutaneous off-loading mechanical support device was implanted to enhance coronary perfusion and preserve cardiac function.
- This strategy effectively stabilized the patient, mitigating acute myocardial infarction complications and allowing time for definitive treatment.
Implications:
- Percutaneous mechanical support devices offer a viable option for managing high-risk SCAD cases where conventional treatments are not immediately feasible.
- This approach may improve outcomes in complex SCAD by stabilizing patients until definitive revascularization can be safely performed.
Abstract:
Spontaneous coronary artery dissection (SCAD) can lead to acute coronary syndrome and sudden cardiac death, particularly in young women. Observational data show that, in SCAD patients, both percutaneous coronary intervention and coronary artery bypass grafting seem to be hampered by higher technical complexity, lower success rates, and worse outcomes. As spontaneous healing is a common occurrence, expert consensus advices medical management of the acute phase, when feasible. We present the case of a young woman with SCAD of left anterior descending artery causing myocardial infarction with ST-segment elevation. High-anatomical complexity and unstable conditions of the patient made both medical management and immediate revascularization unfeasible options. Therefore, we decided to implant a percutaneous off-loading mechanical support device to improve coronary perfusion pressure by unloading the left ventricle and preserve cardiac function, preventing worse complications of acute myocardial infarction. This strategy was successful in stabilizing the patient, until the definitive revascularization treatment became an option.
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