近年来随着医学研究的发展,认为小儿病毒性心肌炎时,心肌缺血、缺氧及炎症细胞浸润可产生大量的自由基,引起脂质过氧化反应,当心肌不能及时清除时,即造成心肌细胞的破坏。因此使用自由基清除剂维生素 C 治疗心肌炎,可减少自由基对心肌细胞的破坏,有助于受损心肌细胞的修复。但是在病毒性心肌炎时,微循环有何改变报道不多, In recent years, with the development of medical research, it is thought that in children with viral myocarditis, myocardial ischemia, hypoxia and infiltration of inflammatory cells can produce a large number of free radicals, causing lipid peroxidation, when the myocardium can not be cleared in time, that is caused by myocardial Cell destruction. Therefore, the use of free radical scavenger vitamin C treatment of myocarditis, can reduce the damage of free radicals on the myocardial cells, contribute to the repair of damaged myocardial cells. However, in viral myocarditis, little change has been reported on the microcirculation,