AUTHOR=Qiao Jinhan , Zhao Peijun , Lu Jianyao , Huang Lu , Ma Xiaoling , Zhou Xiaoyue , Xia Liming 

TITLE=Cardiac involvement in patients 1 year after recovery from moderate and severe COVID-19 infections

JOURNAL=Frontiers in Cardiovascular Medicine

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2022.1009637

DOI=10.3389/fcvm.2022.1009637

ISSN=2297-055X

ABSTRACT=<sec><title>Background</title><p>Some patients suffered persistent cardiac symptoms after hospital discharge following COVID-19 infection, including chest tightness, chest pain, and palpitation. However, the cardiac involvement in these patients remains unknown. The purpose of this study was to investigate the effect of COVID-19 infection on the cardiovascular system after 1 year of recovery in patients hospitalized with persistent cardiac symptoms.</p></sec><sec><title>Materials and methods</title><p>In this prospective observational study, a total of 32 patients who had COVID-19 (11 diagnosed as severe COVID-19 and 21 as moderate) with persistent cardiac symptoms after hospital discharge were enrolled. Contrast-enhanced cardiovascular magnetic resonance (CMR) imaging was performed on all patients. Comparisons were made with age- and sex-matched healthy controls (<italic>n</italic> = 13), and age-, sex- and risk factor-matched controls (<italic>n</italic> = 21). Further analysis was made between the severe and moderate COVID-19 cohorts.</p></sec><sec><title>Results</title><p>The mean time interval between acute COVID-19 infection and CMR was 462 ± 18 days. Patients recovered from COVID-19 had reduced left ventricular ejection fraction (LVEF) (<italic>p</italic> = 0.003) and increased extracellular volumes (ECVs) (<italic>p</italic> = 0.023) compared with healthy controls. Focal late gadolinium enhancement (LGE) was found in 22 (68.8%) patients, mainly distributed linearly in the septal mid-wall or patchily in RV insertion point. The LGE extent in patients with severe COVID-19 was higher than that in patients with moderate COVID-19 (<italic>p</italic> = 0.009).</p></sec><sec><title>Conclusion</title><p>This 1-year follow-up study revealed that patients with persistent cardiac symptoms, after recovering from COVID-19, had decreased cardiac function and increased ECV compared with healthy controls. Patients with COVID-19 predominately had a LGE pattern of septal mid-wall or RV insertion point. Patients with severe COVID-19 had greater LGE extent than patients with moderate COVID-19.</p></sec>