Abstract: Abstract Objective: To observe the tirofiban treatment of acute non-TS segment elevation myocardial infarction (NTSEMI) of clinical efficacy. Methods: Case selection criteria will meet the 110 elderly patients were randomly divided into 2 groups NTSEMI, 55 patients in each group. 2 groups were aspirin, immediately after admission Jiaofu 300mg, later changed to oral, 300mg/d,after 3 days reduction to 100mg/d; low molecular weight heparin, 5000U, subcutaneous injection, 2 times/d; chloride pyridine Gray, the first dose of Dayton suits 300mg, later changed to 75 mg / time, 3 times/d; isosorbide dinitrate, 20 m / second, oral, 3 times/d. Observation group using both tirofiban, the first per-minute 5ug/kg dose intravenous injection at 3 minutes, then the amount per minute 0.1ug/kg maintenance of sustained delivery of 48 hours. Results:The cure rate was 80.00% in the observation group and control group was 67.27%; total effective observation group was 92.73%,85.45% in control group. 2 groups was statistically significant difference compared(P<0.05). Observation group after treatment, the time ST segment in the ideal case than in the control group, compared with 2 groups was significantly(P<0.05). ST segment recovery rate were 87.27%,67.27% in control group. 2 groups was statistically significant difference compared(P<0.05).Conclusion:The use of conventional treatment on the basis of tirofiban treatment of acute non-TS segment elevation myocardial infarction significant ST segment lesions can return to normal.

Key words: acute non-segment elevation myocardial infarction TS, tirofiban, elderly