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Coronary artery anomalies - a short review

100%
Zemanek D., Veselka J.
Open Medicine
|
2007
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vol. 2
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issue 2
140-153
EN
Coronary artery anomalies are rare but sometimes important findings in the evaluation of the coronary artery. The majority of the anomalies are of benign prognosis, but others can be associated with cardiac symptoms and syndromes (angina, dyspnea, syncope, congestive heart failure, myocardial infarction and sudden death). The potentially serious anomalies include: ectopic coronary origin from the pulmonary artery; ectopic coronary origin from the opposite aortic sinus; and large coronary fistulae. Appropriate diagnosis is critical for recognition and management. Treatment can be performed by surgical or percutaneous approach. However, management is conservative in the majority of them. Contemporary diagnosis and clinical management of these anomalies are briefly reviewed and discussed in this article.
2
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High-residual platelet activity despite dual antiplatelet treatment associated with subacute stent thrombosis

71%
Malý M., Hadačová I., Hájek P., Zemánek D., Veselka J.
Open Medicine
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2009
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vol. 4
|
issue 1
119-124
EN
High-residual platelet activity despite the dual antiplatelet treatment with aspirin and clopidogrel is associated with major adverse cardiac events, including stent thrombosis. Acute and subacute stent thrombosis is rare, but presents itself with serious complications including high mortality and morbidity rates. Light transmittance aggregometry with specific agonists - arachidonic acid and 5-adenosin diphosphate - is still considered a standard for the assessment of platelet reactivity, besides novel methods like vasodilator-stimulated phosphoprotein phosphorylation. In our case study, we report the coincidence of high-residual platelet activity with subacute stent thrombosis despite the recommended doses of antiplatelet agents - aspirin and clopidogrel. Stent thrombosis was treated by aspiration thrombectomy, and antiplatelet treatment was modified by increasing the dose of aspirin and substituting clopidogrel with a firstgeneration thienopyridin - ticlopidin. The effect of the treatment was documented by reaching the optimal inhibition of platelet reactivity. In the 6- and 12-month follow-up, the patient presented no ischemic events.
3
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Coronary angiography and dual-source computed tomography are complementary methods in diagnosis of significant stenosis of the right coronary artery originating from the left aortic sinus

61%
Veselka J., Zemánek D., Duchoňová R., Blaško P., Adla T., Tesař D., Neuwirth J.
Open Medicine
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2008
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vol. 3
|
issue 1
111-114
EN
Anomalous origin of the right coronary artery from the contralateral aortic sinus is a rare but potentially fatal congenital abnormality. We analyzed 8.066 consecutive coronary angiograms and found 4 cases demonstrating this anomaly. In 2 cases the right coronary artery was without significant atherosclerotic lesions and coursed between the aorta and pulmonary trunk. In the 2 other cases the right coronary artery was significantly stenosed. In the last case, diagnosis was based on angiographic and dual-source computed tomographic examinations. Dual-source computed tomography showed precisely the origin and course of the right coronary artery between the ascending aorta and pulmonary artery. Moreover, stenoses of the anomalous coronary artery were depicted. Subsequent coronary interventions required modification of the Amplatz left guiding catheter, which enabled a sufficient support even for coronary artery stenting. Both methods seem to be complementary in the diagnostic and therapeutic process of this coronary anomaly.
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