Hypoxia in acute cardiac injury of coronavirus disease 2019: lesson learned from pathological studies.

Coronavirus disease 2019 (COVID-19) is an infectious respiratory disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which has infected 972,303 people and caused 50,322 deaths all over the world according to the latest WHO report,[1] As a highly contagious disease, COVID-19 has killed more people than severe acute respiratory syndrome (SARS) and middle east respiratory syndrome (MERS) combined, despite an relatively low case-fatality rate.[2,3] Although it mainly attacks respiratory system, other systems including cardiovascular system are also influenced by COVID-19.Acute cardiac injury (ACI) is also one of the noteworthy issues which researchers have noticed in several studies.