which is arterial blood gas criteria of respiratory failure under the condition of room air breathing during rest at sea level of altitude. ()
A. PaO2
B. PaO2 ≤ 60mmHg and /or PaCO2>45mmHg
C. PaO2 50mmHg
D. PaO2 60mmHg
E. PaO2 45mmHg
查看答案
Determinant positive standard of bronchial dilation test is()
A. FEV1 improved rate≥12%
B. FEV1 improved rate≥300ml
C. FEV1 improved rate≥18%
D. FEV1 improved rate≤200ml
E. FEV1 improved rate≥20%
Which is not tumors markers?()
A. carcinoembryonic antigen ( CEA)
B. CA 15-3
CA 549
D. LDH
E. CA 125
which is not the symptom of COPD?()
A. excessive cough
B. sputum production
C. shortness of breath
D. weight loss
E. hemoptysis
Write down characters according to the given pinyin.今天的西瓜比昨天guì______
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