2026, Number 3
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Rev Fac Med UNAM 2026; 69 (3)
Acute myocardial infarction with arrhythmic onset and intracavitary thrombus: a case report
Gómez-Montañeza E, Rojas-Salazara YL, Rojas-Salazara JG
Language: Spanish
References: 15
Page: 17-22
PDF size: 222.78 Kb.
ABSTRACT
Introduction: ST-segment elevation acute myocardial infarction
(STEMI) continues to be one of the main causes of cardiovascular
mortality, even in the era of early percutaneous reperfusion; and although traditional risk factors are well
known, there are uncommon complications such as arrhythmic
debut or early formation of intracavitary thrombi, which
modify the prognosis and management.
Case report: A 55-year-old male, resident of Ciudad Juárez,
with a history of myocardial infarction 12 years ago and active
smoking, who suddenly started with oppressive chest
pain, accompanied by syncope and nonsustained ventricular
tachycardia, is presented. The electrocardiogram showed
extensive anterolateral STEMI and the transthoracic echocardiogram
revealed anteroseptal and apical akinesia with an
ejection fraction of 36% and an apical mural thrombus of 1.5
cm. During hospital evolution he presented recurrent polymorphic
ventricular tachycardia that required amiodarone
and oral anticoagulation plus dual antiplatelet therapy was
instituted and the patient was discharged stable on the
fifth day.
Discussion: This case illustrates an infrequent combination
of STEMI with ventricular arrhythmia and early intracavitary
thrombus. The finding forced individualized therapeutic
strategies, highlighting the importance of early reperfusion
and multidisciplinary management; likewise, it emphasizes
that factors such as low HDL and active smoking can have a
decisive prognostic weight, even with normal LDL and total
cholesterol.
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