NLRP3 and myocarditis: At the same time, considering that the activation of NLRP3 inflammasome, whose activation mediates pyroptosis [31], this study further speculated that cinnamaldehyde may alleviate the myocarditis injury of ventricular arrhythmia rats by inhibiting the release of inflammatory factors caused by NLRP3-mediated myocardial pyroptosis.