Arrhythmias in COVID-19. Do they influence outcomes in hospitalized patients?

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Do they influence outcomes in hospitalized patients?" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "581" "paginaFinal" => "582" ] ] "autores" => array:1 [ 0 => array:3 [ "autoresLista" => "Mário Oliveira" "autores" => array:1 [ 0 => array:4 [ "nombre" => "Mário" "apellidos" => "Oliveira" "email" => array:1 [ 0 => "m.martinsoliveira@gmail.com" ] "referencia" => array:3 [ 0 => array:2 [ "etiqueta" => "a" "identificador" => "aff0005" ] 1 => array:2 [ "etiqueta" => "b" "identificador" => "aff0010" ] 2 => array:2 [ "etiqueta" => "c" "identificador" => "aff0015" ] ] ] ] "afiliaciones" => array:3 [ 0 => array:3 [ "entidad" => "Central University Hospital Center, Lisbon, Portugal" "etiqueta" => "a" "identificador" => "aff0005" ] 1 => array:3 [ "entidad" => "Hospital CUF Tejo, Lisbon, Portugal" "etiqueta" => "b" "identificador" => "aff0010" ] 2 => array:3 [ "entidad" => "Institute of Physiology and Centro Cardiovascular da Universidade de Lisboa, Faculty of Medicine of Lisbon, Lisbon, Portugal" "etiqueta" => "c" "identificador" => "aff0015" ] ] ] ] "titulosAlternativos" => array:1 [ "pt" => array:1 [ "titulo" => "Arritmias na COVID-19. Têm impacto prognóstico nos doentes hospitalizados?" ] ] "textoCompleto" => "The SARS-CoV-2 pandemic infection has been reported in 223 countries, with about 136 million cases and almost 3 million deaths since December 2019.<a class="elsevierStyleCrossRef" href="#bib0045">1</a> Although the real mortality associated with COVID-19 remains unknown, the current global case fatality reported across countries ranges from 0.2% (in Germany) to 7.7% (in Italy).<a class="elsevierStyleCrossRef" href="#bib0050">2</a> Cardiovascular disease, diabetes and age have been outlined as risk factors for poorer outcomes in COVID-19 patients.<a class="elsevierStyleCrossRef" href="#bib0055">3</a>The clinical presentation varies widely, from asymptomatic or mild flu-like symptoms to acute severe respiratory distress syndrome and systemic complications impacting several organs. Cardiovascular complications from COVID-19 infection are being reported more frequently, ranging from silent myocardial injury to thromboembolic events, acute coronary syndromes, cardiogenic shock and arrhythmias.<a class="elsevierStyleCrossRef" href="#bib0060">4</a>Arrhythmias have been described in 17% of the hospitalized cases and in almost 50% of patients in the intensive care units (ICU), probably with a potential contribution to a higher risk of adverse outcomes, with an increased risk of in-hospital death.<a class="elsevierStyleCrossRef" href="#bib0065">5</a> There are various reported series of different types of arrhythmias, including bradycardia (less common), sinus tachycardia and atrial arrhythmias (atrial fibrillation [AF] and atrial flutter) and ventricular dysrhythmias, including cardiac arrest.<a class="elsevierStyleCrossRefs" href="#bib0060">4,6</a>In the study “Cardiac arrhythmias in patients presenting with COVID-19 treated in Portuguese hospitals. A national registry from Portuguese Association of Arrhythmology, Pacing and Electrophysiology”, published in this issue of the Journal, Dinis Mesquita et al. present the results of a survey conducted by the Portuguese Association of Arrhythmology, Pacing and Electrophysiology to assess the occurrence of arrhythmias in COVID-19 patients in 20 Portuguese hospitals.<a class="elsevierStyleCrossRef" href="#bib0075">7</a> They report data from 692 hospitalized patients, with arrhythmic episodes in 11.7% of the cases, including paroxysmal supraventricular tachycardia, atrial flutter and AF (the most common, being recurrence of previously existing arrhythmia in 35.9%), bradycardia and ventricular tachycardia. Surprisingly, none had arrhythmia-related complications nor arrhythmic death despite their elderly age (mean 73.5 years; minimum 61, maximum 80.3), associated comorbidities in a large majority of the reported arrhythmias (79.7%), and more severe COVID-19 disease, with mechanical ventilation, hemodynamic instability and multiple organ failure (in those patients with supraventricular arrhythmias) and high mortality rate (31.3%).Although continuous cardiac rhythm monitoring was obtained only in the subgroup of 393 patients admitted to the ICU or with continuous cardiac monitoring, with detailed information available limited to 79% of the cases with documented arrhythmias, these are useful real clinical data for our understanding of the severity and impact of arrhythmias in COVID-19 infection.The survey also reports the assessment of QT interval during hospital admission in 443 patients under therapy with ritonavir/lopinavir, hydroxychloroquine or azithromycin. Interestingly, despite medication capable of QT prolongation in 76.6% of the cases with arrhythmias, only seven patients (10.9%) had an increased QTc interval (ranging between 480 ms and 596 ms).As pointed out by the authors, the availability of continuous cardiac monitoring in only 56.8% of the population poses strong limitations to the conclusions of the registry. Of course, it seems that the occurrence of arrhythmias (mostly supraventricular) is a common finding, particularly in patients with co-morbidities and more severe COVID-19 manifestations, but data from the whole population could identify clinical variables associated with higher risk of new onset (or reappearance) of arrhythmias, and contribute to a better approach to this specific group of patients.According to the most recent literature, risk factors for the appearance of arrhythmias are: respiratory insufficiency, myocardial strain and ischemia or myocarditis, cardiogenic shock, sepsis or systemic inflammation, hyperactivity of the sympathetic nervous system, hypercoagulability status, electrolyte disturbances, and proarrhythmic drug side effects.<a class="elsevierStyleCrossRefs" href="#bib0060">4,6,8</a> Therefore, the incidence of arrhythmias in patients with COVID-19 is a likely consequence of systemic illness and not solely the direct cardiac effect of the infection.Conflicts of interestThe author has no conflicts of interest to declare." 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