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Myocardial salvage following elective angioplasty for total coronary occlusion
A Singh1, R G Murray, S Chandler
1Department of Cardiovascular Medicine, Queen Elizabeth Medical Centre, University of Birmingham, Edgbaston, UK.
Insights
Elective percutaneous transluminal coronary angioplasty successfully salvaged myocardium in a patient with unstable angina and total left anterior descending coronary artery occlusion. This intervention prevented myocardial infarction and improved cardiac function, leading to long-term symptom relief.
Area of Science:
- Cardiology
- Interventional Cardiology
- Nuclear Cardiology
Background:
- Unstable angina with critical coronary artery stenosis poses a significant risk of myocardial infarction.
- Total occlusion of a major coronary artery, like the left anterior descending, necessitates prompt intervention.
- Assessing myocardial viability and function is crucial for guiding treatment decisions.
Observation:
- A 65-year-old male presented with unstable angina and a critical stenosis of the left anterior descending coronary artery that progressed to total occlusion.
- Thallium imaging showed perfusion defects, and 99mTc radionuclide angiography revealed a reduced left ventricular ejection fraction during exercise.
- Contrast cineangiography demonstrated extensive left ventricular akinesia.
Findings:
- Percutaneous transluminal coronary angioplasty (PTCA) was successfully performed without complications.
- Post-procedure radionuclide studies showed significant improvement in myocardial perfusion and left ventricular function.
- One-year follow-up angiography confirmed normal left ventricular contraction and no restenosis.
Implications:
- This case demonstrates the feasibility and efficacy of elective coronary angioplasty for myocardial salvage in unstable angina with total coronary occlusion.
- Successful revascularization can prevent acute myocardial infarction and restore cardiac function.
- Long-term outcomes can include freedom from angina and medication, highlighting the benefits of timely intervention.
Abstract:
A 65-year-old man with unstable angina had a critical left anterior descending coronary artery stenosis which progressed to total occlusion, without evidence of acute myocardial infarction. Thallium imaging revealed defects in the distribution of the left anterior descending coronary artery on exercise and redistribution, 4 h later. 99mTc radionuclide angiography showed a fall in left ventricular ejection fraction on exercise, and contrast cineangiography showed an extensive area of akinesia. Percutaneous transluminal coronary angioplasty was successful without any complications. Repeat radionuclide studies demonstrated improvement of both myocardial perfusion and function. Angiography at 1 year showed normal left ventricular contraction and no evidence of recurrent stenosis. The patient is free of angina, on no medication 2 years after angioplasty. This case illustrates the feasibility of myocardial salvage by elective coronary angioplasty in patients with unstable angina total coronary occlusion.