Which one is not included in indications of stopping using a breathing machine
A
The stable condition of the patient and that of the function of the respiration circulation system
B
A period over 2〜3 hours of maintaining normal spontaneously breathing
C
The case in which one inhales 50% oxygen that results in PaO2 > 6.65kPa (50mmHg) and PaCO2 <6.65kPa(50mmHg)
D
Excessive phlegm that leads to the unablity independent expectoration
E
Distinct consciousness and stable spontaneously breathing