3.8 Review

COVID-19 myocarditis and prospective heart failure burden

Journal

EXPERT REVIEW OF CARDIOVASCULAR THERAPY
Volume 19, Issue 1, Pages 5-14

Publisher

TAYLOR & FRANCIS INC
DOI: 10.1080/14779072.2021.1844005

Keywords

COVID-19; myocarditis; cardiac magnetic resonance; heart failure

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COVID-19 has been found to cause considerable morbidity and mortality worldwide, with the heart being frequently affected as well. The impact of COVID-19 on the myocardium and the cardiovascular outcomes in survivors remain uncertain. Patients hospitalized with COVID-19 often exhibit myocardial injury, which is associated with a worse prognosis. Additionally, COVID-19 survivors may be at risk of developing persistent residual myocardial injury due to the inflammatory nature of the virus.
Introduction: COVID-19 is causing considerable morbidity and mortality worldwide. Serious respiratory complications aside, the heart is also frequently involved. The mechanisms and the extent of the myocardial injury, along with the short and long-term cardiovascular (CV) outcomes in COVID-19 survivors remain unclear. Areas covered: myocardial injury has been found in a considerable proportion of hospitalized COVID-19 patients and is associated with a worse prognosis. The late onset of CV complications with myocarditis-like changes revealed by CMR has been reported in COVID-19 survivors. Previous observational studies on viral myocarditis provide evidence of a significant incomplete recovery with residual dysfunction and remodeling of left ventricle. Incomplete recovery is thought to be the result of persistent myocardial inflammation due to a post-viral autoimmune response. Considering the significant inflammatory nature of COVID-19, COVID-19 survivors may be at risk of developing persistent residual myocardial injury, the sequelae of which are unclear. Expert commentary: COVID-19 is an emerging threat for the heart. The extent of CV injury, along with the short and long-term sequelae, requires further investigation. The early detection of residual myocardial changes in COVID-19 survivors is of utmost importance in order to identify those patients at risk of CV complication development.

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