Changes in cardiac structure and function from 3 to 12 months after hospitalization for COVID‐19

Background Cardiac function may be impaired during and early after hospitalization for COVID-19, but little is known about the progression of cardiac dysfunction and the association with postacute COVID syndrome (PACS). Methods In a multicenter prospective cohort study, patients who had been hospitalized with COVID-19 were enrolled and comprehensive echocardiography was performed 3 and 12 months after discharge. Twenty-four-hour electrocardiogram (ECG) was performed at 3 and 12 months in patients with arrhythmias at 3 months. Results In total, 182 participants attended the 3 and 12 months visits (age 58 +/- 14 years, 59% male, body mass index 28.2 +/- 4.2 kg/m(2)). Of these, 35 (20%) had severe COVID-19 (treatment in the intensive care unit) and 74 (52%) had self-reported dyspnea at 3 months. From 3 to 12 months there were no significant overall changes in any measures of left or right ventricle (LV; RV) structure and function (p > .05 for all), including RV strain (from 26.2 +/- 3.9% to 26.5 +/- 3.1%, p = .29) and LV global longitudinal strain (from 19.2 +/- 2.3% to 19.3 +/- 2.3%, p = .64). Changes in echocardiographic parameters from 3 to 12 months did not differ by COVID-19 severity or by the presence of persistent dyspnea (p > .05 for all). Among patients with arrhythmia at 3 months, there was no significant change in arrhythmia burden to 12 months. Conclusion Following COVID-19, cardiac structure and function remained unchanged from 3 to 12 months after the index hospitalization, irrespective of COVID-19 severity and presence of persistent dyspnea. These results suggest that progression of cardiac dysfunction after COVID-19 is rare and unlikely to play an important role in PACS.