This is a multicenter, cross-sectional study enrolling consecutive patients with laboratory-confirmed COVID-19 who were hospitalized from March 1 to April 9, 2020. A total of 614 patients with COVID-19 were included. Elevated troponin levels were found in 278 patients (45.3%). Elevated troponin levels were associated with an increased in-hospital mortality (37% vs 13%; HR, 1.71 [95% CI, 1.13-2.59]; P = .01 via multivariable Cox regression analysis), and this was independent from concomitant cardiac disease. Elevated troponin levels were also associated with a higher risk of in-hospital complications.

JAMA Cardiol. doi:10.1001/jamacardio.2020.3538 Published online August 26, 2020.