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[Late coronary reperfusion. A possible etiology of post-infarction angina]
1CHU Timone, Marseille.
Insights
Late recanalisation of infarct-related arteries can occur, potentially causing recurrent angina. This phenomenon was observed in male patients, necessitating myocardial revascularisation after a symptom-free interval.
Area of Science:
- Cardiology
- Vascular Medicine
Background:
- Complete occlusions of infarct-related arteries can occur post-myocardial infarction.
- Collateral circulation may initially compensate for arterial blockages.
Purpose of the Study:
- To investigate the possibility of late recanalisation in occluded infarct-related arteries.
- To determine the clinical implications of late recanalisation on post-infarction angina.
Main Methods:
- Observation of 7 male patients with complete arterial occlusions post-myocardial infarction.
- Serial coronary angiography to assess arterial patency and collateral circulation.
- Clinical follow-up for symptom recurrence.
Main Results:
- Late recanalisation of occluded infarct-related arteries was observed after a mean symptom-free period of 17 months.
- Recanalisation was associated with regression of collateral circulation.
- Recanalised arteries led to recurrent myocardial ischemia and post-infarction angina.
Conclusions:
- Late recanalisation of infarct-related arteries is a possible event.
- This phenomenon can precipitate recurrent angina and myocardial ischemia.
- Myocardial revascularisation may be required in such cases.
Abstract:
Late recanalisation of the infarct Related Artery is possible and may cause post-infarction angina. This was observed in 7 male patients who had complete occlusions of an artery with collateral circulation in the immediate post-infarction period. After a symptom-free period of 17 months, angina recurred and repeat angiography showed recanalisation of the occluded artery with regression of the collateral circulation resulting in myocardial ischemia. Myocardial revascularisation was then required.