![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
肌钙蛋白I(CTnI)是诊断急性心肌梗塞(AMI)的确定性标志物,请问肌钙蛋白的危急值是()
A.>0.88ng/ml
B.>0.68ng/ml
C.>0.78ng/ml
D.>0.58ng/ml
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
C、>0.78ng/ml
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.>0.88ng/ml
B.>0.68ng/ml
C.>0.78ng/ml
D.>0.58ng/ml
C、>0.78ng/ml
A.心肌酶或肌钙蛋白有诊断意义的升高
B.心电图有损伤性的ST段改变但未出现病理Q波
C.发病90天后,经检查证实左心室功能降低,如左心室射血分数低于50%
A.肌酸激酶
B.肌酸激酶同工酶
C.肌红蛋白
D.肌钙蛋白I