[Complications after treatment of acute coronary syndrome]
1Cardiovascular Division, Osaka Police Hospital.
Insights
Understanding coronary artery occlusion mechanisms is key for acute coronary syndrome treatment. Angioscopy can differentiate thrombus from plaque, guiding effective, complication-free interventions.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Biomedical Imaging
Context:
- Acute coronary syndrome (ACS) involves coronary artery occlusion, leading to myocardial ischemia and necrosis.
- Current treatments like thrombolysis and angioplasty have limitations including failure, reocclusion, and bleeding.
- The underlying mechanism of occlusion (thrombus vs. plaque) is often unclear, hindering optimal treatment selection.
Purpose:
- To highlight the importance of understanding the specific mechanism of coronary artery occlusion in ACS.
- To propose angioscopy as a superior diagnostic tool over coronary angiography for elucidating occlusion mechanisms.
- To advocate for mechanism-guided therapy to improve treatment efficacy and reduce complications.
Summary:
- Unstable plaque rupture and thrombus formation cause coronary artery occlusion, resulting in poor clinical outcomes.
- Angioscopic observations reveal persistent thrombus formation and plaque instability for extended periods post-onset.
- Differentiating between thrombus-dominant and plaque-dominant occlusions is crucial for selecting appropriate interventions.
Impact:
- Accurate identification of occlusion mechanisms using angioscopy can guide targeted therapies.
- This approach may reduce reliance on thrombolytic agents, thereby decreasing bleeding complications.
- Effective and complication-free reopening of occluded coronary arteries can be achieved by tailoring treatment to the specific pathology.
Abstract:
The rupture of the unstable plaque and the thrombus formation caused the occlusion of the coronary artery and followed myocardial ischemia and/or myocardial necrosis, then resulted in clinical worse outcome. The reopen of the occluded artery is the most important things for the treatment of acute coronary syndrome, and there are usually two established ways to open the occluded artery. Thrombolysis and angioplasty are already established ways to reopen, however has some complications, that is, failure to reopen, reocclusion, and bleeding. Angioscopic observations reveal the mechanism underlying these complications and suggest that platelet rich white thrombus formation continues until a month after the onset and unstable yellow plaques exist until 18 months after the onset. The most problems for the treatment in today are the unaware of the mechanism of the occlusion. If the thrombus is the major mechanism for the occlusion, thrombolytic therapy must be chosen. If the plaque is the major occlusive mechanism, the angioplasty must be chosen. To reveal the mechanisms underlying the coronary artery occlusion, we will have to use the angioscope instead of coronary angiography. After we will be able to clarify the occlusive mechanism by angioscope, we will reduce the dosage of thrombolytic agents and resulted in the decrement of bleeding complications and reopen the coronary artery effectively without complications.
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