What is cTnI? Troponin (Tn) is a complex of three regulatory proteins (C, I, T) that is integral to muscle contraction in skeletal muscle and cardiac muscle, but not smooth muscle. However, TnT and TnI in cardiac muscle are presented by forms different from those in skeletal muscles. Distribution of cTnI during AMI When AMI and myocardial cell damage occurs: The free cTnI in cardiac muscle is rele...

  COVID-19 caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was officially declared a pandemic by the World Health Organization in March 2020[1,3] . According to European Centre for Disease Prevention and Control, the rate of COVID-19 cases among people aged 65 years and older increased by 7% by the week ending 18 December 2022 compared with the previo...