Abstract:

ＯｂｊｅｃｔｉｖｅTo investigate clinical significance of tombstoning of ST segment in acute myocardial infarction (AMI) in the elderly.ＭｅｔｈｏｄｓAmong 468 patients with AMI, there were 42 cases whose ECG showed tombstoning of ST segment. According to the patients’age, those 42 cases were divided into elder tombstoning of ST segment group and nonelder tombstoning of ST segment group. Besides, 50 cases whose ECG showed ST segment elevation in other shapes were chosen randomly as control group in the 468 patients. Some indexes were analyzed in these three groups.Ｒｅｓｕｌｔｓ100% of the elderly patients with tombstoning ST segment elevation were found to have underlying diseases.The incidence rate of postmyocardial infarction angina before PCI，complication, mortality, leads of ST segment elevation  or  pathologic Q wave, amplitude were all significantly higher than those of the nonelder patient groups. And all the above values in tombstoning group were higher than those in other groups,and the difference was statistically significant. And the incidence rate of ischemic myocardial reperfusion after PCI is significantly higher in tombstoning group than that in nonelder patient groups.ＣｏｎｃｌｕｓｉｏｎｓThe tombstoning of ST segment suggests the poor prognosis in AMI patients, especially in elderly patients. These patients should be cautioned against reperfusion injury.

Key words: acute myocardial infarction, tombstoning of ST segment, myocardial ischemia reperfusion injury, aged