Objective   To explore the difference of dietary structure between patients with angina pectoris and those with acute myocardial infarction, and to analyze the influence of dietary pattern on acute myocardial infarction.

  Methods   Seventy-two patients with coronary artery disease (CAD) in Xuanwu Hospital of Capital Medical University were selected and divided into angina pectoris group (n=39) and myocardial infarction group (n=33) according to the presence of myocardial injury. The dietary structure of two groups was investigated; the Alternative Healthy Diet Index-2010 (AHEI-2010) was scored and stratified for the two groups; the risk factors of dietary structure for acute myocardial infarction were analyzed.

  Results   After being stratified by AHEI-2010 score, there was statistically significant difference in dietary structure composition ratio between two groups (P < 0.05). The proportion of patients with poor dietary structure in myocardial infarction group was significantly higher than that in the angina pectoris group (P < 0.05). The proportion of patients with poor dietary structure in the myocardial infarction group was significantly higher than that in the angina pectoris group (P < 0.05). Over-intake of sodium was a risk factor for myocardial infarction (P=0.008, OR=1.416, 95%CI, 1.096~1.831).

  Conclusion   According to dietary stratification of AHEI-2010 score, the risk of acute myocardial infarction in CAD can be assessed, and it can reasonably improve dietary structure, and prevent the occurrence of acute myocardial infarction.