Cardiac manifestations of COVID-19 include myocarditis, demand ischemia, myocardial infarction and arrhythmias with prothrombotic state being a major underlying pathogenetic mechanism. In this report we present a case of a 57-year-old, otherwise healthy, woman who presented with chest pain and nausea and was found to have an inferior wall ST-elevation myocardial infarction (STEMI) in the setting of an active COVID-19 infection. Angiography revealed tortuous coronary arteries with a 100% right coronary artery occlusion with high thrombus burden and normal left coronary system. In light of the available literature regarding the pro-thrombotic effects of this novel corona virus, we continued full dose anticoagulation with Enoxaparin after the cardiac catheterization and transitioned to rivaroxaban and we also continued the patient on dual antiplatelet therapy prior to discharge.
Coronavirus disease 2019 (COVID-19) is a pandemic that started in China in December 2019 and carries a high risk of morbidity and mortality. To-date (4-22-2020) it affected over 2.6 million people and resulted in nearly 200,000 death worldwide mainly due to severe acute respiratory syndrome coronavirus 2 (SARS-Cov-2). Among the major underlying pathophysiologic mechanisms in COVID 19 is hypercoagulability, leading to increased risk for deep vein thrombosis and pulmonary embolism that contribute to increased morbidity and mortality. In this report, we present the case of a 55-year-old man who presented with COVID-19 pneumonia, and was found to have a thrombus in transit by routine point of care ultrasound (POCUS). While computer tomography (CT) angiography is the test of choice, the utilization of point of care ultrasound (POCUS) has gained traction as an adjunctive means of surveillance for the development of VTE in patients with COVID-19. In this report, we discuss the clinical utility of POCUS in diagnosing thrombus in transit in COVID 19 populations.
Coronavirus disease 2019 (COVID-19) is a pandemic that started in the Wuhan province of China in December 2019. It is associated with increased morbidity and mortality mainly due to severe acute respiratory syndrome 2 (SARS-Cov-2). Cardiac manifestations related to COVID-19 include demand ischemia, fulminant myocarditis, myocardial infarction and arrhythmias. In this report, we present a case of ST-segment elevation myocardial infarction (STEMI) in a 68-year-old man with COVID-19 who initially presented with chest pain and shortness of breath. Patient's STEMI was managed with pharmaco-invasive strategy with tissue plasminogen activator (t-PA). He then developed acute hypoxic respiratory failure that was managed in the intensive care unit (ICU), together with multi-organ failure from which the patient died 2 days after presentation. Although the pathophysiologic mechanisms of STEMI in COVID-19 patients has not been clearly established, we hypothesize that interrelated pathogenetic factors, that we highlight in this report, can play a role in the development of STEMI, including plaque rupture secondary to systemic inflammation, increased pro-coagulants, endothelial dysfunction, impaired fibrinolysis and impaired oxygen utilization leading to demand/ supply mismatch and myocardial ischemia.
Introduction:Diastolic dysfunction is characterized by impaired energy-dependent active relaxation, increased stiffness and resultant pulmonary congestion and low cardiac output state. Isolated diastolic dysfunction is a relatively common problem and accounts for up to 30% of heart failure. 1Prognosis of the patient with diastolic dysfunction is better than those with systolic heart failure. 2 The one year readmission rate approaches 50% in patients with diastolic heart failure. This morbidity rate is nearly identical to that for patients with systolic heart failure. 3,4,5 .Risk factors for diastolic dysfunction are: i) high blood pressure (i.e. hypertension, where, as a result of left ventricular muscle hypertrophy to deal with the high pressure, the left ventricle has become stiff), ii) scarred heart muscle (e.g. occurring after a heart attack, iii) scars are relatively stiff), diabetes (stiffening occurs presumably as a result of glycosylation of heart muscle), iv) severe systolic dysfunction that has led to ventricular dilation i.e. when the ventricle has been stretched to a certain point, any further attempt to stretch it more, as by blood trying to enter it from the left atrium, meets with increased resistance -it has become stiff, v) reversible stiffening as can occur during periods of cardiac ischemia, vi) ageing. 6 Jossup M et al 2003, showed that it is frequently common in female.So early diagnosis of diastolic dysfunction in high risk individuals is important to prevent overt heart failure. 7 Although Doppler echocardiography has been used to examine left ventricular diastolic filling dynamics, the limitations of this technique suggest the need for other measures of diastolic dysfunction. 8 Original Article Role of B Type Natriuretic Peptide in the Early
Background The Bezold–Jarisch reflex (BJR) is a cardioinhibitory parasympathetic response to activation of ventricular mechanoreceptors, which can result in bradycardia, atrioventricular block, or asystole. This phenomenon has been triggered by acute myocardial ischaemia, intra-arterial nitroglycerine use, natriuretic peptides, and with exceptional rarity, in middle-aged women only, by dobutamine infusion during stress echocardiography. Case summary We present the case of a 61-year-old woman who suffered a 5.1-s sinus pause during her 20 μg/kg/min infusion of dobutamine. Recovery was immediate following termination of dobutamine infusion. Concurrent echocardiography was normal, and subsequent cardiac catheterization and electrophysiologic study were normal. Discussion This is the fifth documented case of a severe BJR causing asystole during dobutamine infusion, which adds to the accumulating evidence supporting the benign nature of the condition.
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