血清钙离子低于多少,可引起手足搐搦症发作()
A:<1.0mmol/L(4mg/d1)
B:1.75~1.88mmol/L(7~7.5mg/d1)
C:2.25mmol/L(9mg/d1)
D:1.38mmol/L(5.5mg/d1)
E:2.75mmol/L(1lmg/d1)
出自:02941《中医儿科学》