摘要
目的 :评价因急性心肌梗死 (AMI)症状就诊的患者症状发作持续时间对心电图阴性预测值的影响。方法 :前瞻性观察 52 6例根据症状发作时间长短 ,以每 3h间隔时间分组的心电图阴性预测值变化。结果 :10 4例 (2 0 % )诊断为 AMI。各时间组心电图的阴性预测值 :0～ 3h组为93.2 % ,3～ 6 h组为 93.0 % ,6～ 9h组为 92 .6 % ,9～ 12 h组为 94 .1% (P=1.0 )。结论 :心电图阴性预测值并不随症状发作持续时间的延长而提高 ,即使在症状发作后 12 h描记的正常心电图也不能排除
Objective:To assess the effect of time elapsed from symptom onset to emergency department presentation on the negative predictive value of the initial ECG.Method: 526 patients with chest pain or other symptoms suggesting aute myocaidial infarction (AMI) were obseroead prospectively. ECG of them were stratified according to duration of time recorded from symptom oset at 3 hour intervals.Their ECG were analyzed.Result:A diagnosis of AMI was made in 104 patients (20%).The negative predictive values of a normal ECG for exclusion of AMI,stratified by duration of time recorded from symptom onset,were 0 to 3 hours 93.2 %, 3 to 6 hours 93.0 %, 6 to 9 hours 92.6 % ,and 9 to 12 hours 94.1 % (P= 1.0 ).Conclusion:The negative predictive value of a normal ECG for exclusion of AMI does not increase as the duration from symptom onset to presentation increases.Normal ECG findings cannot be used to rule out an AMI,even those obtained up to 12 hours after symptom onset.
出处
《临床心血管病杂志》
CAS
CSCD
北大核心
1999年第5期200-202,共3页
Journal of Clinical Cardiology
关键词
心电描记术
胸痛
心肌梗塞
诊断
Electrocardiography Myocardial infarction Chest pain
