The instrument also has various functions , such as arrhythmia monitoring , emergency treatment of acute myocardial infarction ( ami ) , alarm parameters setting and abnormal ecg waves saving to provide historical data for doctors . it has the advantages of little volume and low cost and is especially suitable for household monitoring and diagnosis and monitoring in emergency cases 该仪器还有心律失常监护、心肌梗塞贴药急救、报警参数设置和记录报警时的心电信号供医生作回顾分析等多种功能,具有体积小、成本低的优点,特别适用于家庭医护以及急救情况下的临床诊断和监护。