Abstract:

Objective To analyze the risk factors of malignant ventricular arrhythmias (MVA) of STelevation myocardial infarction. Methods Retrospective analysis was made in 158 cases of patients  in our hospital who had clear and definite diagnosis for STelevation myocardial infarction. The patients were divided into study group (MVA  incidence， 32 cases) and control group (no MVA incidence， 126 cases) according to the incidence of  MVA 48 hours after primary PCI. The clinical indicators such as basic clinical  indicators， ECG， laboratory test， coronary angiography of two groups were counted and compared. Results The proportion of patients with diabetes，the level of  blood glucose， level of serum creatinine， level of leukocyte， level of neutrophil cell and proportion of  heart function Klillip grade Ⅳ of patients in study group were significantly higher than those in control group (P<0.05)， while the serum potassium concentration was significantly lower than that of control group (P<0.05).The risk factors of  MVA of STelevation myocardial infarction included heart function Klillip grade Ⅳ， leukocyte count was greater than or equal to 11.040×109/L，neutrophils count was greater than or equal to 8.155×109/L， the level of blood glucose was more than or equal to 9.58  mmol/L， serum potassium was less than or equal to 3.13  mmol/L， creatinine was more than or equal to  96.93  μmol/L(P<0.01). Conclusion  The clinical intervention measures of STelevation myocardial infarction in view of the above risk factors should be strengthened， the incidence of  MVA will be reduced， the prognosis of patients will be improved.

Key words: myocardial infarction, reperfusion; , arrhythmia, risk factors