Acute Non-Atherosclerotic ST-Segment Elevation Myocardial Infarction in an Adolescent with Concurrent Hemoglobin H-Constant Spring Disease and Polycythemia Vera

Myocardial infarction in young individual: A case report of polycythemia vera-induced acute inferior wall myocardial infarction

Acute coronary syndrome is commonly associated with traditional cardiovascular risk factors such as smoking, hypertension, diabetes, and hyperlipidemia. Myocardial infarction in a young person presents a significant challenge because its etiology is least likely associated with atherosclerosis. Polycythemia vera refers to one of the rare causes of myocardial infarction, which involves enhanced erythrocyte levels, leukocytosis, thrombocytosis, splenomegaly, and a greater chance of vascular occlusion due to clotting in coronary arteries. A 22-year-old male from Pakistan, Asia without typical risk factors, presented with severe chest pain. Electrocardiography indicated acute inferior wall myocardial infarction, and streptokinase was administered. Subsequent investigations confirmed polycythemia vera. Treatment with hydroxyurea and aspirin was initiated, whereas normal coronary arteries in CT coronary angiogram were observed. This case highlights polycythemia vera's rare role in young individuals' heart attacks without known risk factors, emphasizing the need for early detection and specialized treatments involving hematologists to prevent future thrombotic episodes.

Myeloproliferative Neoplasms in Children and Adolescents and Thrombosis at Unusual Sites: The Role of Driver Mutations

Myeloproliferative neoplasms (MPNs) in childhood and adolescence are rare and seldom complicated by thrombosis. We describe 3 cases of thrombosis at unusual sites in young patients with MPNs. In the pediatric MPN population, unlike in adult MPNs, a clonal mutation is identifiable in only a minority of cases (22% to 26%). All 3 of these individuals had JAK2 mutations driving the disease process. A literature search identified 19 cases of MPN-associated thrombosis in children. Seventeen of the 19 children (89.5%) had a driver mutation. These cases suggest that identifiable driver mutations may confer an increased thrombotic risk in children with MPNs.

Polycythemia Vera Presenting as Cardiac Arrest: Novel Management Strategies

Acute coronary syndromes (ACS) usually occur in patients with multiple cardiac risk factors. In young adults, drug use and hypercoagulable states are common causes for ACS presentations. We report a case of a man in his early 30s who was diagnosed with polycythemia vera (PV) and had a cardiac arrest due to an anterolateral ST elevation myocardial infarction. We discuss his unique management and review the evidence on the management of arterial thromboembolism in PV patients.

[Involvement of thrombophilia in coronary thrombosis]

This review of thrombophilia and coronary thrombosis takes into account the "classical" thrombophilia commonly found in venous pathology and the conditions under which their research may be useful in certain forms of arterial thrombosis especially coronary thrombosis. In addition to the classical thrombophilia, exceptional thrombophilia are evoked, which are both factors of venous thrombosis but also arterial thrombosis. There are also thrombophilia that are more specific to the arterial system such as - homocystein which is potentially both a thrombosis factor but also an agent of arterial parietal lesion or - serotonin which is a factor of arterial spasm and especially coronary spasm. Finally, under the term thrombophilia, it is possible to include thrombophilic conditions, in particular cancers and inflammatory conditions.

Myocardial infarction with proximal occlusion of the left anterior descending coronary artery in a 22-year-old patient with polycythaemia vera

In this article, we report on a 22-year-old patient with myocardial infarction, which was the initial manifestation of polycythaemia vera. The awareness of myeloproliferative disorders as possible underlying disease - especially in young patients presenting with myocardial infarction - is crucial for clinical management, as a missed diagnosis can worsen the patient's further prognosis.