“Triangular QRS-ST-T waveform ECG pattern” during SARS-CoV-2 infection in a paediatric case with multiple comorbidities

Abstract Triangular QRS-ST-T waveform electrocardiography pattern, so-called “shark fin sign,” is a rare and highly mortal electrocardiography finding, which usually occurs in adult patients with coronary occlusion. Here, we reported the first paediatric case occurring in a striking “triangular waveform electrocardiography pattern” due to myocarditis during COVID-19 infection.