Double Trouble in a Patient with Coronary Ectasia, Bradycardia with Angina: Epiphenomenal or Mechanistic Association
نویسندگان
چکیده
Coronary artery ectasia is a rare angiographical finding, and it accounts for less than 5% of all coronary angiograms. We report a case of a 55-year-old male patient who presented with fatigue and exertional chest pain. Paraclinical tests revealed cardiac ischemia and sinus node dysfunction, as well as coronary artery ectasia without significant coronary stenosis. Factors involved in cardiac ischemia in this context comprise slow flow, poor collateral circulation, microcirculatory dysfunction, lack of adequate exertional coronary vasodilatation, and endothelial dysfunction. Moreover, poor collaterals with rudimentary sinus node artery may explain sinus node dysfunction. Discussion is made in light of the relevant medical literature.
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Coronary artery ectasia (CAE) is an abnormality of the coronary anatomy and might be a variant of the Coronary Artery Disease (CAD). The CAE can cause angina pectoris and even MI with vasospasm, dissection, or thrombus in patients without CAD. Isolated CAE is defined as CAE without significant coronary artery stenosis. The mechanisms responsible for ectasia formation are not clearly known. Howe...
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